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StreamStats

New Hampshire StreamStats Application Information


General Information

Project area general description

The state of New Hampshire

Are any areas excluded?

Yes. Peak flow equations are not applicable to some rivers.

Types of flow statistics available

Peak flows and Low flows

ArcGIS version used for processing

9.1

Was TopoGrid used to process DEMs?

Yes

DEM and derivatives projection (general description)

NAD 1983, New Hampshire State Plane (FIPS 2800 Feet)

DEM and derivatives (fdr, fac, etc.) resolution

 10 m

DEM source

NED, 2007

Hydrography source

NHD, 2007

Hydrologic unit "walls" source

WBD, 2001

Gage basin boundaries source

WBD, 2001 and some were done by hand digitizing

Interactive map snapping tolerance

3 cells

 

Basin Characteristics Methods and Sources

Name

Description

Computation method

Data source

Report

Variable label in report

CSL10_85

10-85 slope in feet per mile based on preprocessed data

    ArcHydro

    10-meter DEM

Olson (2009)

S

DRNAREA

Drainage area in square miles

polygon area

GlobalWatershed

Olson (2009) Flynn (2002)

A

WETLAND

Percentage of area covered by wetlands, from NLCD 2001

percent of area

NLCD 2001 Land Cover http://www.mrlc.gov/nlcd01_data.php

Olson (2009)

W

PRECIP

Mean annual basin precipitation, in inches.

area-weighted mean

800M resolution PRISM 1971-2000 data
http://www.prism.oregonstate.edu/products/      (resampled to 180 ft grid resolution)

Olson (2009)

P

APRAVPRE

Mean April Precip

area-weighted mean

BSLDEM30M

Mean Basin Slope (percent)

area-weighted mean

National Elevation Dataset (NED), 30m resolution - 2001 snapshot

Flynn (2002)

BS

CONIF

Percent Coniferous Forest

percent of area

NLCD 2001 Land Cover http://www.mrlc.gov/nlcd01_data.php

Flynn (2002)

C

ELEVMAX

Maximum Basin Elevation in feet

raster max

National Elevation Dataset (NED), 30m resolution - 2001 snapshot

Flynn (2002)

MxBE

MIXFOR

Percent Mixed Coniferous and Deciduous Forest

percent of area

NLCD 2001 Land Cover http://www.mrlc.gov/nlcd01_data.php

Flynn (2002)

CD

OUTLETX

X coordinate of the outlet in New Hampshire State Plane (feet)

ArcHydro custom op

Flynn (2002)

 

OUTLETY

Y coordinate of the outlet in New Hampshire State Plane (feet)

ArcHydro custom op

Flynn (2002)

 

PREBCO103

Average Winter Basin Centroid Precipitation in inches

Basin centroid point intersect

Derived from 2km resolution PRISM 1961-1990 mean monthly precipitation grids: January, February, March at http://www.climatesource.com/

Flynn (2002)

WCP

PREG_03_05

Average Spring Gage Precipitation in inches

Basin outlet point intersect

Derived from 2km resolution PRISM 1961-1990 mean monthly precipitation grids: March, April, May at http://www.climatesource.com/

Flynn (2002)

SpGP

PREG_06_10

Average Summer Gage Precipitation in inches

Basin outlet point intersect

Derived from 2km resolution PRISM 1961-1990 mean monthly precipitation grids: June, July, August, September, October at http://www.climatesource.com/

Flynn (2002)

SGP

TEMP

Average mean annual basin temperature (degrees Fahrenheit)

area-weighted mean

Derived from 2km resolution PRISM 1961-1990 mean annual temperature grid data at http://www.climatesource.com/

Flynn (2002)

ABT

TEMP_06_10

Average mean summer basin temperature (degrees Fahrenheit)

area-weighted mean

Derived from 2km resolution PRISM 1961-1990 mean monthly temperature grids: June, July, August, September, October at http://www.climatesource.com/

Flynn (2002)

SBT

Drainage Area in square miles

polygon area

Flynn (2002)

DA

The New Hampshire StreamStats introductory page here has additional information regarding the application, including links to reports, cooperators, and other explanatory information.