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StreamStats

New York StreamStats Application Information


General Information

Project area general description

The state of New York

Are any areas excluded?

Long Island

Types of flow statistics available

Peak flows only

ArcGIS version used for processing

9.2

Was TopoGrid used to process DEMs?

Yes

DEM and derivatives projection (general description)

UTM Zone 18N

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

10m

DEM source

NED 1/3

Hydrography source

NHD 1:24k

Hydrologic unit "walls" source

WBD 1:24k

Gage basin boundaries source

Legacy hand delineated basins (digitized)

Interactive map snapping tolerance

2 cells

 

Basin Characteristics Methods and Sources

Name

Description

Computation method

Data Source

Report

Variable label in report

DRNAREA

Area that drains to a point on a stream in square miles.

polygon area

GlobalWatershed

Lumia and others(2006), Gazoorian (2015)

A, Drainage area, in square miles

BSLOPCM

Mean basin slope determined by summing lengths of all contours in basin multiplying by contoour interval and dividing product by drainage area

(sum of CONTOUR length) / A

Contours computed from 10m NED

Lumia and others(2006)

BS

CONTOUR

Total length of all elevation contours in drainage area in miles

length

Contours computed from 10m NED

Lumia and others(2006)

CONTOUR

EL1200

Percentage of basin at or above 1200 ft elevation

area-weighted mean

10m NED

Lumia and others(2006), Gazoorian (2015)

EL12, Percentage of basin above
1,200 feet
elevation

FOREST

Percent of area covered by forest

area-weighted mean

1992 NLCD

Lumia and others(2006)

FOR_

LENGTH

Length along the main channel from the measuring location extended to the basin divide

length

10m NED

Lumia and others(2006)

L

LAGFACTOR

Basin Lag factor as defined in SIR 2006-5112

L / ((SL_UP + 1)*(SL_LO + 1))^0.5)

10m NED

Lumia and others(2006)

LAG

MXSNO

50th percentile of seasonal maximum snow depth from Northeast Regional Climate Center Atlas by Cember and Wilks, 1993

area-weighted mean

Northeast Regional Climate Center (NRCC) atlas of snowfall

Lumia and others(2006)

MXSNO

PRECIP

Mean annual precipitation in inches.

area-weighted mean

Gridded contour map of mean annual precipitation 195180

Lumia and others(2006)

P

MAR

Mean annual runoff for the period of record in inches

area-weighted mean

Gridded contour map of mean annual runoff 1951-80

Lumia and others(2006), Gazoorian (2015)

RUNF, Mean annual runoff, 19511980, in inches

CSL10_85

Change in elevation divided by length between points 10 and 85 percent of distance along main channel to basin divide - main channel method not known

The difference in elevation (feet) between points 10 percent and 85 percent of the distance along the main stream channe

10m NED

Lumia and others(2006)

SL

CSL1085LO

Change in elevation between points 10 and 85 percent of length along the lower half of the main flow path divided by length between the points

The difference in elevation (feet) between points 10 percent and 85 percent of the distance along the lower half of the main channel

10m NED

Lumia and others(2006), Gazoorian (2015)

SL_LO, Slope, lower half of main channel, in feet per mile

CSL1085UP

Change in elevation between points 10 and 85 percent of length along the upper half of the main flow path divided by length between the points

The difference in elevation (feet) between points 10 percent and 85 percent of the distance along the upper half of the main channel

10m NED

Lumia and others(2006)

SL_UP

SLOPERATIO

Ratio of main channel slope to basin slope as defined in SIR 2006-5112

Ratio of main channel slope to basin slope

10m NED

Lumia and others(2006)

SR

STORAGE

Percentage of area of storage (lake, ponds, reservoirs, wetlands)

area-weighted mean

1992 NLCD

Lumia and others(2006)

ST

LC11IMP

Perecentage of impervious area determined from NLCD 2011 impervious dataset

area-weighted mean

2011 NLCD

LC11DEV

Percentage of laund-use from NLCD 2011 classes 21-24

area-weighted mean

2011 NLCD

SSURGOA

Perecentage of area of Hydrologic Soils Type A from SSURGO

percentage of area

SSURGO

Gazoorian (2015)

Percent hydrologic soils group A

SSURGOB

Percentage of area of Hydrologic Soils Type B from SSURGO

percentage of area

SSURGO

Gazoorian (2015)

Percent hydrologic soils group B

MAYAVPRE

Mean May Precipitation

area-weighted mean

PRISM 800-m normals

Gazoorian (2015)

Mean May precipitation, 19712000, in inches

JUNAVPRE

Mean June Precipitation

area-weighted mean

PRISM 800-m normals

Gazoorian (2015)

Mean June precipitation, 19712000, in inches

JULAVPRE

Mean July Precipitation

area-weighted mean

PRISM 800-m normals

Gazoorian (2015)

Mean July precipitation, 19712000, in inches

PRJUNAUG00

Mean seasonal precipitation June to August, basin average from PRISM 1971-2000

area-weighted mean

PRISM 800-m normals

Gazoorian (2015)

Mean summer precipitation, 19712000, in inches

JUNMAXTMP

Mean Maximum June Temperature

area-weighted mean

PRISM 800-m normals

Gazoorian (2015)

Maximum June temperature, in degrees Fahrenheit, 19712000

CENTROIDX

Basin centroid horizontal (x) location in state plane coordinates

archydro custom-op

10m NED

Gazoorian (2015)

X location of basin centroid, in UTM zone 18N m

CENTROIDY

Basin centroid vertical (y) location in state plane coordinates

archydro custom-op

10m NED

Gazoorian (2015)

Y location of basin centroid, in UTM zone 18N m

OUTLETX

Basin outlet horizontal (x) location in state plane coordinates

archydro custom-op

10m NED

Gazoorian (2015)

X location of basin outlet, in UTM zone 18N m

OUTLETY

Basin outlet vertical (y) location in state plane coordinates

archydro custom-op

10m NED

Gazoorian (2015)

Y location of basin outlet, in UTM zone 18N m

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