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NHDPlus v2.1 Catchment Attributes ()
This collection of datasets comprises information of natural and man-made landscape features attributed to NHDPlus Version 2.1 catchments
(NHDPlusV2) for the conterminous United States. The data are organized for two spatial aspects of NHDPlusV2: 1) individual flowline
catchments and 2) flowline catchments accumulated upstream through the stream network. All datasets can be connected to NHDPlusV2 by
using the COMID field in the tables and the ComID field in the flowline shapefiles or the FEATUREID field in the catchment shapefiles
within the NHDPlusV2 data suite. See the metadata in the Science Base link for more detail on each individual listing.
Landscape Characteristics Table
Name
Theme
Attribute
Description
Units
Access
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Bedrock Permeability Classes
Geology
Bedrock Permeability Classes
This tabular data set represents bedrock permeability classes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Generalized Geology Type (Reed and Bush, 2001)
Geology
Generalized Geology Type (Reed and Bush, 2001)
This tabular data set represents Dominant geology type (Reed and Bush, 2001) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2013
Land Cover
Crop Land Data Layer 2013
This tabular data set represents the percent of land cover classes from the 2013 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Level 3 EcoRegions (North American Designations)
Regions
Level 3 EcoRegions (North American Designations)
This tabular data set represents the percent of United States Environmental protection Agency's (U.S. EPA) Level 3 Regions compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Hunt Geology, 1999
Geology
Hunt Geology, 1999
This tabular data set represents the percent of surficial materials compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent NLCD 2011 in 50 Meter Riparian Buffer
Land Cover
Percent NLCD 2011 in 50 Meter Riparian Buffer
This tabular data set represents the percent of NLCD 2011 land cover classes in the 50 meter riparian buffer zones compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NAWQA Wall-to-Wall Anthropogenic Land Use Trends (NWALT)
Land Cover
NAWQA Wall-to-Wall Anthropogenic Land Use Trends (NWALT)
his tabular data set contains information on historic anthropogenic land use trends, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Watershed Covered by Waterbodies from NHD High Resolution
Land Cover
Percent of Watershed Covered by Waterbodies from NHD High Resolution
This tabular data set represents the presence of six National Hydrography Dataset (NHD) high resolution waterbody types compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The six types of waterbodies presented here are: playa, ice mass, lake/pond, reservoir, swamp/marsh, and estuary.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified-Routing Upstream Watersheds for the Conterminous United States: Monthly Average Precipitation (millimeters) from 1945 - 2015
Climate Water Balance
Monthly Average Precipitation (millimeters) from 1945 - 2015
This tabular data set represents monthly average precipitation values (millimeters) described in Wolock and McCabe (2018), compiled for the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States for the years 1945 - 2015. The precipitation values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/month
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Monthly Average Annual Runoff (mm) from McCabe and Wolock's Runoff Model 1945 - 2015
Climate Water Balance
Monthly Average Annual Runoff (mm) from McCabe and Wolock's Runoff Model 1945 - 2015
This tabular data set represents monthly average annual runoff (mm) from McCabe and Wolock's Runoff Model 1945-2015 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/month
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Soller Surficial Materials, 2009
Geology
Soller Surficial Materials, 2009
This tabular data set represents the percent of surficial materials compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated Percent Presence of the Soil Restrictive Layers on Agricultural Land
Soils
Estimated Percent Presence of the Soil Restrictive Layers on Agricultural Land
This tabular data set represents the estimated percent presence of the soil restrictive layer on agricultural land compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM 30 year (1971-2000) Monthly Average Temperature (degrees Celsius)
Climate
PRISM 30 year (1971-2000) Monthly Average Temperature (degrees Celsius)
These tabular data sets represent mean 30 year (1971-2000) monthly temperature (degrees Celsius) data from 800 meter resolution PRISM for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
degrees C
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified-Routing Upstream Watersheds for the Conterminous United States: Monthly Average Temperature (Celsius) from 1945 - 2015
Climate Water Balance
Monthly Average Temperature (Celsius) from 1945 - 2015
This tabular data set represents monthly average temperature values (Celsius) described in Wolock and McCabe (2018), compiled for the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States. Linkage of the temperature data with NHDPlusV2 is achieved through the common unique identifier COMID. The temperature values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/month
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM Monthly Average Temperature (degrees Celsius), 2016-2017
Climate
PRISM Monthly Average Temperature (degrees Celsius), 2016-2017
These tabular data sets represent mean monthly temperature (degrees Celsius) data from 800 meter resolution PRISM for the years 2016 and 2017 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
degrees Celsius
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Average Monthly Runoff (mm) from McCabe and Wolock's Runoff Model Over Period of Record, 1951-2000
Climate and Water Balance
Average Monthly Runoff (mm) from McCabe and Wolock's Runoff Model Over Period of Record, 1951-2000
This data set represents the average monthly runoff (mm) from McCabe and Wolock's Runoff Model over the period of record, 1951-2000 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Mean Annual Water Balance Variables for the Period of Record, 2000-2014 and Detrended for the Year 2012
Climate
Mean Annual Water Balance Variables for the Period of Record, 2000-2014 and Detrended for the Year 2012
This tabular data set represents mean annual water balance variables as described in Wolock and McCabe (2017) for the period 2000-2014, detrended to 2012, compiled for the NHDPlus version 2.1 data suite (NHDPlusV2) for the conterminous United States. The detrended variables (DT_XXX where XXX is the variable) included are: actual evapotranspiration (DT_AET) , potential evapotranspiration (PET), precipitation (DT_PPT), runoff (DT_RUN) , percent of annual precipitation as snow (DT_SNO) , soil moisture storage (DT_STO), and temperature (DT_TAV). Linkage of these data with NHDPlusV2 is achieved through the common unique identifier COMID. The values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/yr
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Mean-Annual Evapotranspiration, Gabriel Senay (2013)
Climate
Mean-Annual Evapotranspiration, Gabriel Senay (2013)
This tabular data set represents mean-annual evapotranspiration, estimated by Senay and others (2013) and compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters per year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Annual Average Actual Evapotranspiration (millimeters) from 2014 - 2015
Climate and Water Balance
Annual Average Actual Evapotranspiration (millimeters) from 2014 - 2015
This tabular data set represents annual average actual evapotranspiration values (millimeters) described in Wolock and McCabe (2017), compiled for the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States for the years 2014 and 2015. Linkage of the actual evapotranspiration data with NHDPlusV2 is achieved through the common unique identifier COMID. The actual evapotranspiration values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Flowlines for the Conterminous United States: Wet, Dry, and Total Deposition of Select Constituents from Community Multiscale Air Quality modeling system (CMAQ) for 2002 - 2012
Chemical
Wet, Dry, and Total Deposition of Select Constituents from Community Multiscale Air Quality modeling system (CMAQ) for 2002 - 2012
This metadata record describes 19 annual Congestion Mitigation and Air Quality Improvement (CMAQ) Program variables ( kilograms per hectare) for each year between 2002 - 2012 ( Zhang and others, 2012, Schwede and others, 2014) compiled for two spatial components of the NHDPlus version 2.1 data suite hereto referred to as (NHDV2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg-N/ha
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Select Basin Characteristics
Topographic
Select Basin Characteristics
This tabular data set represents select basin characteristics compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
square kilometers
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Base Flow Index
Hydrologic
Base Flow Index
This tabular data set represents base flow index (BFI) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2011
Land Cover
Crop Land Data Layer 2011
This tabular data set represents the percent of land cover classes from the 2011 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent NLCD 2011 Tree Canopy
Land Cover
Percent NLCD 2011 Tree Canopy
This tabular data set represents percent NLCD 2011 Tree Canopy compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Contact Time
Hydrologic
Contact Time
This tabular data set represents contact time, the length of time it takes for water to drain along subsurface flow paths to the stream, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Select Conservation Practices (CPRAC) for 2012
Best Management Practices
Select Conservation Practices (CPRAC) for 2012
This metadata record describes 7 conservation practice based on information from the National Resource Conservation Service (NASS) (Michael Schwartz, USGS, written communic. 2017). These data are for the year, 2012 and compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: 2012 Conservation Reserve Program land allocated to 2012 NWALT landuse
Land Cover
2012 Conservation Reserve Program land allocated to 2012 NWALT landuse
This data set represents 2012 Conservation Reserve Program land allocated to NWALT crops and pasture/hay (NWALT_43 and NWALT_44) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
square meters
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Consecutive Wet Days
Climate
Consecutive Wet Days
This tabular data set represents the average number of consecutive days with measurable precipitation for the period between 1871 and 1997, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: National Atmospheric Deposition Program (NADP) National Trends Network (NTN) 1985-2014
Chemical
National Atmospheric Deposition Program (NADP) National Trends Network (NTN) 1985-2014
This data set represents National Atmospheric Deposition Program (NADP) National Trends Network average of annual precipitation-weighted mean atmospheric deposition for seven select constituents from years 1985-2014 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kilograms per hectare
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated Area of Agricultural Land Drained by Field Ditches, 1992
Hydrologic Modifications
Estimated Area of Agricultural Land Drained by Field Ditches, 1992
This tabular data set represents the estimated percent area of agricultural land drained by field ditches for the year 1992 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) annual average duration of consecutive dry and wet days for the Conterminous United States and District of Columbia
Climate
30 year (1981 - 2010) annual average duration of consecutive dry and wet days for the Conterminous United States and District of Columbia
This tabular data describes the annual average duration of consecutive wet and dry events during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days per event
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) annual average duration of consecutive dry and wet days for the Conterminous United States and District of Columbia
Climate
30 year (1981 - 2010) annual average duration of consecutive dry and wet days for the Conterminous United States and District of Columbia
This tabular data describes the annual average duration of consecutive wet and dry events during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
occurrences
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) average of annual maximum duration of consecutive dry and wet days per event for the Conterminous United States and District of Columbia
Climate
30 year (1981 - 2010) average of annual maximum duration of consecutive dry and wet days per event for the Conterminous United States and District of Columbia
This tabular data describes the average of annual maximum duration of consecutive dry and wet days per event, where precipitation totals are 0 or equal and exceeds 1 millimeters respectively, during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean-Annual Actual Evapotranspiration, Estimated Using Regression Equation of Sanford and Selnick (2013)
Climate
Mean-Annual Actual Evapotranspiration, Estimated Using Regression Equation of Sanford and Selnick (2013)
This tabular data set represents mean-annual actual evapotranspiration, estimated using the regression equation of Sanford and Selnick (2013) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Enhanced Vegetation Index 2012
Regions
Enhanced Vegetation Index 2012
This tabular data set represents Enhanced Vegetation Index compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
0-1, 0 being low vegetation, 1 being high vegetation
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Average Elevation of Water Table Relative to Land Surface
Hydrologic
Average Elevation of Water Table Relative to Land Surface
This tabular data set represents average depth to water table relative to the land surface(meters) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
meters
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Nitrogen and Phosphorous Estimates from Fertilizer and Manure, 2012
Chemical
Nitrogen and Phosphorous Estimates from Fertilizer and Manure, 2012
This tabular data set represents estimated loads of nitrogen and phosphorous from fertilizer and manure applied on agricultural land for the year 2012 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Average Yearly Freshwater Withdrawals
Water Use
Average Yearly Freshwater Withdrawals
This data set represents annual freshwater withdrawals averaged over the years 1995-2000 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
megaliters per square kilometer
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean Julian Day of the Year of First Freeze, from 30 Years of Record (1961-1990)
Climate
Mean Julian Day of the Year of First Freeze, from 30 Years of Record (1961-1990)
This tabular data set represents the mean Julian year day of the year of the first freeze, from 30 years of record (1961-1990) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
day of year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Fungicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
Chemical
Fungicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
This data set represents the Fungicide use on agricultural land in kilograms per square kilometer, 2013 value compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Housing Density 1940-2010
Population
Housing Density 1940-2010
This tabular data set contains information on historic housing densities for every 10 years from 1940-2010, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Herbicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
Chemical
Herbicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
This data set represents the Herbicide use on agricultural land in kilograms per square kilometer, value compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: STATSGO2 Soil Characteristics, Hydrologic Groups
Soils
STATSGO2 Soil Characteristics, Hydrologic Groups
This tabular data set represents the percentages of soils for each STATSGO2 Hydrologic Group compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Mean Infiltration-Excess Overland Flow as a Percent of StreamFlow
Hydrologic
Mean Infiltration-Excess Overland Flow as a Percent of StreamFlow
This tabular data set represents mean infiltration-excess overland flow as a percent of streamflow, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NLCD 2001 Percent Imperviousness
Land Cover
NLCD 2001 Percent Imperviousness
This tabular data set represents NLCD 2001 percent imperviousness compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NLCD 2001 Percent Imperviousness in 100 Meter Riparian Buffer
Land Cover
NLCD 2001 Percent Imperviousness in 100 Meter Riparian Buffer
This tabular data set represents NLCD 2001 percent imperviousness in the 100 meter riparian buffer zones compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NLCD 2006 Percent Imperviousness
Land Cover
NLCD 2006 Percent Imperviousness
This tabular data set represents NLCD 2006 percent imperviousness compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NLCD 2006 Percent Imperviousness in 100 Meter Riparian Buffer
Land Cover
NLCD 2006 Percent Imperviousness in 100 Meter Riparian Buffer
This tabular data set represents NLCD 2006 percent imperviousness in the 100 meter riparian buffer zones compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: NLCD 2011 Percent Imperviousness
Land Cover
NLCD 2011 Percent Imperviousness
This tabular data set represents NLCD 2011 percent imperviousness compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent NLCD 2011 in 50 Meter Riparian Buffer
Land Cover
Percent NLCD 2011 in 50 Meter Riparian Buffer
This tabular data set represents the percent of NLCD 2011 land cover classes in the 50 meter riparian buffer zones compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Insecticide Use on Agricultural Land in Kilograms per square Kilometer, 2009
Chemical
Insecticide Use on Agricultural Land in Kilograms per square Kilometer, 2009
This data set represents the Insecticide use on agricultural land in kilograms per square kilometer, 2009 value compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) annual average of daily intensity of precipitation for a rain event for the Conterminous United States and District of Columbia
Climate
30 year (1981 - 2010) annual average of daily intensity of precipitation for a rain event for the Conterminous United States and District of Columbia
This tabular data describes the annual average of daily intensity of precipitation for a rain event during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters per day
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: STATSGO Soil Characteristics, Layer Attributes
Soils
STATSGO Soil Characteristics, Layer Attributes
This tabular data set represents the STATSGO Soil Layer Attributes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unitless
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated Rate of Toxicity Weighted Use on Agricultural Land, 2009
Chemical
Estimated Rate of Toxicity Weighted Use on Agricultural Land, 2009
This tabular data set represents the estimated toxicity weighted use of pesticides on fish, benthic invertebrates and cladocerans on agricultural land in kilograms per square kilometer, 2009 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean Day of the Year of Last Freeze, from 30 Years of Record (1961-1990)
Climate
Mean Day of the Year of Last Freeze, from 30 Years of Record (1961-1990)
This tabular data set represents the mean Julian year day of the year of the last freeze, from 30 years of record (1961-1990) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
day of year
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year Average (1961-1990) of Maximum Monthly Precipitation in Millimeters
Climate
30 Year Average (1961-1990) of Maximum Monthly Precipitation in Millimeters
This tabular data set represents 30 year average (1961-1990) of maximum monthly precipitation in millimeters compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/year
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year Average (1961-1990) of Maximum Monthly Number of Days of Measurable Precipitation
Climate
30 Year Average (1961-1990) of Maximum Monthly Number of Days of Measurable Precipitation
This tabular data set represents 30 year average (1961-1990) of maximum monthly number of days of measurable precipitation per month compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year Average (1961-1990) of Minimum Monthly Precipitation in mm
Climate
30 Year Average (1961-1990) of Minimum Monthly Precipitation in mm
This tabular data set represents 30 year average (1961-1990) of minimum monthly precipitation in millimeters compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/year
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year Average (1961-1990) of Minimum Monthly Number of Days of Measurable Precipitation
Climate
30 Year Average (1961-1990) of Minimum Monthly Number of Days of Measurable Precipitation
This tabular data set represents 30 year average (1961-1990) of minimum monthly number of days of measurable precipitation per month compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Irrigated Agriculture, 2002 MIrAD data
Hydrologic Modifications
Percent of Irrigated Agriculture, 2002 MIrAD data
This tabular data set represents percent of irrigated agriculture, based on 2002 MODIS Irrigated Agricultural Data (MIrAD) data compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Irrigated Agriculture, 2007 MIrAD data
Hydrologic Modifications
Percent of Irrigated Agriculture, 2007 MIrAD data
This tabular data set represents percent of irrigated agriculture, based on 2007 MODIS Irrigated Agricultural Data (MIrAD) data compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Irrigated Agriculture, 2012 MIrAD data
Hydrologic Modifications
Percent of Irrigated Agriculture, 2012 MIrAD data
This tabular data set represents percent of irrigated agriculture, based on 2012 MODIS Irrigated Agricultural Data (MIrAD) data compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean Rate of Nitrogen Application on Agricultural Land from Census of Agriculture, 1997
Chemical
Mean Rate of Nitrogen Application on Agricultural Land from Census of Agriculture, 1997
This tabular data set represents the mean rate of nitrogen from fertilizer and manure applied on agricultural land in 1997 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: National Inventory of Dams (NID) Storage and Construction by Decade, 1930 to 2010
Hydrologic Modifications
National Inventory of Dams (NID) Storage and Construction by Decade, 1930 to 2010
This tabular data set contains decadal information on dams compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
count
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Nematicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
Chemical
Nematicide Use on Agricultural Land in Kilograms per square Kilometer, 2009
This data set represents the Nematicide use on agricultural land in kilograms per square kilometer, 2009 value compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Major Sites of the National Pollutant Discharge Elimination System (NPDES)
Hydrologic Modifications
Major Sites of the National Pollutant Discharge Elimination System (NPDES)
This tabular data set represents the number and density of major National Pollutant Discharge Elimination System (NPDES) sites, as defined by Environmental Protection Agency (EPA), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) number and desnity of major sites per individual reach catchments and 2) number and density of major sites accumulated upstream through the river network.
sites per 100 square kilometers
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Select Geochemical Characteristics Based on Olson Geology Types
Geology
Select Geochemical Characteristics Based on Olson Geology Types
This tabular data set represents select geochemical characteristics based on Olson geology types in surface or near surface geology (Olson, 2014) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean Rate of Phosphorous Application on Agricultural Land from Census of Agriculture, 1997
Chemical
Mean Rate of Phosphorous Application on Agricultural Land from Census of Agriculture, 1997
This tabular data set represents the mean rate of phosphorous from fertilizer and manure applied on agricultural land in 1997 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Estimate of agricultural pesticide application (219 types)
Chemical
Estimate of agricultural pesticide application (219 types)
This data set represents estimated agricultural pesticide application (219 types) based on county-wide sales and percent agricultural land cover in watershed compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
kg/sqkm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM 30-Year Average Potential Evapotranspiration, 1971-2000
Climate
PRISM 30-Year Average Potential Evapotranspiration, 1971-2000
This tabular data set represents PRISM 30-year average Potential Evapotranspiration, 1971-2000 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Annual Average Potential Evapotranspiration (millimeters) from 2014 - 2015
Climate and Water Balance
Annual Average Potential Evapotranspiration (millimeters) from 2014 - 2015
This tabular data set represents annual average potential evapotranspiration values (millimeters) described in Wolock and McCabe (2017), compiled for the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States for the years 2014 and 2015. Linkage of the potential evapotranspiration data with NHDPlusV2 is achieved through the common unique identifier COMID. The potential evapotranspiration values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus version 2.1 catchments and modified routing of upstream watersheds for the conterminous United States: 2012 Percent farm land in conservation program.
Best Management Practices
2012 Percent farm land in conservation program.
This metadata record describes a computed ratio of county acres of farmland reported in agricultural conservation programs to the total acres of farmland reported for the county. Acres in conservation programs are for the 2012 time period, and reported by survey from the U.S. Department of Agriculture, Farm Field Survey. Acres of total farmland were used from the U.S. Department of Agriculture, 2012 Census of Agriculture. The ratio is intended to provide an indication of the intensity of agricultural management practices.
fraction
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: STATSGO Soil Characteristics, Soil pH
Soils
STATSGO Soil Characteristics, Soil pH
This tabular data set represents the soil pH as processed from STATSGO2 database compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
pH (unitless)
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Physiographic Provinces
Regions
Physiographic Provinces
This tabular data set represents the percent of physiographic provinces compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Watershed Potential to Contribute Phosphorus from Geologic Materials to Receiving Streams
Soils
Watershed Potential to Contribute Phosphorus from Geologic Materials to Receiving Streams
This tabular data set represents the contribution of phosphorus (P) to streams from weathering and erosion of surficial geologic materials compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
ppm
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 2000
Population
Population Density from U.S. Block-Level Population Density Rasters for 2000
This tabular data set represents population density, persons per square kilometer from 2000Census block level data, processed by James Falcone (USGS, 2016), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network
persons per square kilometer
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 2010
Population
Population Density from U.S. Block-Level Population Density Rasters for 2010
This tabular data set represents population density, persons per square kilometer from 2010 Census block level data, processed by James Falcone (USGS, 2016), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
persons per square kilometer
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 1990
Population
Population Density from U.S. Block-Level Population Density Rasters for 1990
This tabular data set represents population density, persons per square kilometer from 1990 Census block level data, processed by James Falcone (USGS, 2016), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
persons per square kilometer
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year (1971 - 2000) Mean Annual Precipitation
Climate
30 Year (1971 - 2000) Mean Annual Precipitation
This tabular data set represents 30 year (1971 - 2000) mean annual precipitation in millimeters compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/year
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM 30 year (1971-2000) Monthly Average Precipitation (millimeters)
Climate
PRISM 30 year (1971-2000) Monthly Average Precipitation (millimeters)
These tabular data sets represent mean 30 year (1971-2000) monthly precipitation (millimeters) data from 800 meter resolution PRISM for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM Monthly Average Precipitation (millimeters), 2016-2017
Climate
PRISM Monthly Average Precipitation (millimeters), 2016-2017
These tabular data sets represent mean monthly precipitation (millimeters) data from 800-meter PRISM data for the years 2016 and 2017 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Estimated Mean Annual Snow as a Percent of Total Precipitation
Climate
Estimated Mean Annual Snow as a Percent of Total Precipitation
This tabular data set represents estimated mean annual snow as a percent of total precipitation, 1905-2002 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated Mean Annual Natural Groundwater Recharge
Hydrologic
Estimated Mean Annual Natural Groundwater Recharge
This tabular data set represents estimated the 30 year (1951-1980) mean annual natural groundwater recharge compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/yr
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated 30 Year, 1971-2000, Mean Annual Watershed Rainfall and Runoff factor ("R factor" of Universal Soil Loss Equation)
Hydrologic
Estimated 30 Year, 1971-2000, Mean Annual Watershed Rainfall and Runoff factor ("R factor" of Universal Soil Loss Equation)
This data set represents the mean annual average for the Rainfall and Runoff factor ("R factor" of Universal Soil Loss Equation) for the period 1971-2000 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
hundreds of foot-ton-inches per acre per year
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: PRISM 30-Year Average (1961-1990) Relative Humidity (percent)
Climate
PRISM 30-Year Average (1961-1990) Relative Humidity (percent)
This tabular data set represents PRISM 30-year average (1961-1990) relative humidity (percent) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Principal Aquifers and Rock Types
Geology
Principal Aquifers and Rock Types
This tabular data set represents Principal Aquifers and Rock Types compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated 30-Year (1971-2000) Average Annual Runoff Based on Flow Measured at Streamgages, Millimeters per Year
Hydrologic
Estimated 30-Year (1971-2000) Average Annual Runoff Based on Flow Measured at Streamgages, Millimeters per Year
This tabular data set represents estimated 30-year (1971-2000) average annual runoff in millimeters per year compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network
millimeters per year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: STATSGO Soil Characteristics, Soil Salinity
Soils
STATSGO Soil Characteristics, Soil Salinity
This tabular data set represents the STATSGO soil layer attribute, salinity, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
milliohms per centimeter (mohms/cm).
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Mean Saturation Overland Flow as a Percent of Streamflow
Hydrologic
Mean Saturation Overland Flow as a Percent of Streamflow
This tabular data set represents mean saturation overland flow as a percent of streamflow compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Modeled historical land use and land cover for the conterminous United States, 1940-1990
Land Cover
Modeled historical land use and land cover for the conterminous United States, 1940-1990
This tabular data set contains information on historic land use, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Modeled historical land use and land cover for the conterminous United States, 1992-2002
Land Cover
Modeled historical land use and land cover for the conterminous United States, 1992-2002
This tabular data set contains information on historic land use, compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Distribution of Phosphorus in Soil Horizons A and C and Geologic Mapping Units
Soils
Distribution of Phosphorus in Soil Horizons A and C and Geologic Mapping Units
This tabular data set represents the estimated distribution of Phosphorus (P) in the soil A and C horizons, milligrams per kilogram compiled for two spatial components of the NHDPlus version 2.1 data suite (hereto referred as NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
milligrams/kilogram
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year (1971 - 2000) Mean Annual Temperature (Celsius)
Climate
30 Year (1971 - 2000) Mean Annual Temperature (Celsius)
This tabular data set represents 30 year (1971 - 2000) mean annual temperature (Celsius) compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
degrees Celsius
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Estimated Area of Subsurface Drainage on Agricultural Land, 1992
Hydrologic Modifications
Estimated Area of Subsurface Drainage on Agricultural Land, 1992
This tabular data set represents the estimated percent area of subsurface drainage for the year 1992 compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Estimates of Subsurface Tile Drainage Extent for the Conterminous United States, Early 1990s
Hydrologic Modifications
Estimates of Subsurface Tile Drainage Extent for the Conterminous United States, Early 1990s
This tabular data set represents the estimated percent area of subsurface tile drainage extent from the early 1990's compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: NAWQA Wall-to-Wall Anthropogenic Land Use Trends (NWALT) Timber 1999-2012
Land Cover
NAWQA Wall-to-Wall Anthropogenic Land Use Trends (NWALT) Timber 1999-2012
This tabular data set contains annual information on forestry activity, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year (1971 - 2000) Mean Annual Maximum Temperature (Celsius) from 800m PRISM data
Climate
30 Year (1971 - 2000) Mean Annual Maximum Temperature (Celsius) from 800m PRISM data
This tabular data set represents 30 year (1971 - 2000) mean annual maximum temperature (Celsius) from 800m PRISM data compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
degrees C
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year (1971 - 2000) Mean Annual Minimum Temperature (Celsius) from 800m PRISM data
Climate
30 Year (1971 - 2000) Mean Annual Minimum Temperature (Celsius) from 800m PRISM data
This tabular data set represents the 30 year (1971 - 2000) mean annual minimum temperature (Celsius) from 800m PRISM data compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
degrees C
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: National Resource Conservation Service's Best Management Practice Scenarios for Total Non-Gas Nitrogen, Phosphorous, and Sediment
Best Management Practices
National Resource Conservation Service's Best Management Practice Scenarios for Total Non-Gas Nitrogen, Phosphorous, and Sediment
This metadata record describes three best management practice scenarios for Nitrogen, Phosphorous, and Sediment based on information from the National Resource Conservation Service. The index was compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The index was intended to provide an indication of the expected aggregate benefits of the implementation of a suite of management practices.
kilograms
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Topographic Wetness Index
Hydrologic
Topographic Wetness Index
This tabular data set represents average topgraphic wetness index compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
ln(m)
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Average Annual Runoff (mm) from McCabe and Wolock's Runoff Model 1951-2000
Hydrologic
Average Annual Runoff (mm) from McCabe and Wolock's Runoff Model 1951-2000
This data set represents the average annual runoff (mm) from McCabe and Wolock's Runoff Model 1951-2000 value compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
millimeters per year
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Average Annual Water Balance Variables over the Period of Record, 2000-2014
Climate and Water Balance
Average Annual Water Balance Variables over the Period of Record, 2000-2014
This tabular data set represents annual water balance variables as described in Wolock and McCabe (2017) averaged over the years 2000 through 2014, compiled for the NHDPlus version 2.1 data suite (NHDPlusV2) for the conterminous United States. The variables included are: actual evapotranspiration (AET, in millimeters) , potential evapotranspiration (PET, in millimeters), precipitation (PPT, in millimeters), runoff (RUN, in millimeters) , annual precipitation as snow (SNO, in millimeters) , soil moisture storage (STO, in millimeters), and temperature (TAV, in Celsius). Linkage of these data with NHDPlusV2 is achieved through the common unique identifier COMID. The values are estimated both for: 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
mm/yr
Attributes for NHDPlus Version 2.1 Flowlines for the Conterminous United States: 2012 Source Sector Deposition from Community Multiscale Air Quality modeling system (CMAQ)
Chemical
2012 Source Sector Deposition from Community Multiscale Air Quality modeling system (CMAQ)
This metadata record describes 4 tabular data sets that estimate fraction of the total dry or wet deposition due to emissions from fertilizer and animal manure based on output from the Community Multiscale Air Quality modeling system (CMAQ, Zhang and others, 2019) compiled for two spatial components of the NHDPlus version 2.1 data suite (hereto referred as NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: PRISM 30 Year (1961-1990) Annual Average Number of Days of Measurable Precipitation
Climate
PRISM 30 Year (1961-1990) Annual Average Number of Days of Measurable Precipitation
This tabular data set represents 30 year annual average (1961-1990) number of days of measurable precipitation compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
days
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: PRISM 30 Year (1961-1990) Monthly Mean of Number of Days of Measurable Precipitation
Climate
PRISM 30 Year (1961-1990) Monthly Mean of Number of Days of Measurable Precipitation
This tabular data set represents the 30 year average (1961-1990) number of days of measurable precipitation per month, compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
number of days per month
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Wildfire 2000-2012
Land Cover
Wildfire 2000-2012
This tabular data set contains information on percent of wild fires per catchments for the years 2000 through 2012, and compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2012
Land Cover
Crop Land Data Layer 2012
This tabular data set represents the percent of land cover classes from the 2012 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2014
Land Cover
Crop Land Data Layer 2014
This tabular data set represents the percent of land cover classes from the 2014 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Hydrologic Landscape Regions
Regions
Hydrologic Landscape Regions
This tabular data set represents the percent of Hydrologic Landscape Regions compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
unknown
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: National Land Cover Database 2019 Versions for the Years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019
Land Cover
National Land Cover Database 2019 Versions for the Years 2001, 2004, 2006, 2008, 2011, 2013, 2016, and 2019
his tabular data set represents the percent of land cover classes from the 2019 edition of the National Land Cover databases for the years 2001, 2004, 2006, 2008, 2011, 2013, 2016 and 2019 compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
percent
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: STATSGO Soil Characteristics, Text Attributes
Soils
STATSGO Soil Characteristics, Text Attributes
This tabular data set represents the STATSGO Soil texture Attributes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network.
