Link to USGS home
.

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

A

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

polygon area

GlobalWatershed

Lumia and others(2006)

A

BS

Average basin slope, in feet per mile.

(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

EL12

Percentage of basin at or above 1200 ft elevation

area-weighted mean

10m NED

Lumia and others(2006)

EL12

FOR_

Percent of area covered by forest

area-weighted mean

1992 NLCD

Lumia and others(2006)

FOR_

L

Main-channel stream length, in miles

length

10m NED

Lumia and others(2006)

L

LAG

Basin Lag factor.

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

10m NED

Lumia and others(2006)

LAG

MXSNO

Seasonal maximum snow depth, 50th percentile, in inches

area-weighted mean

Northeast Regional Climate Center (NRCC) atlas of snowfall

Lumia and others(2006)

MXSNO

P

Mean annual precipitation in inches.

area-weighted mean

Gridded contour map of mean annual precipitation 195180

Lumia and others(2006)

P

RUNF

Mean annual runoff in inches.

area-weighted mean

Gridded contour map of mean annual runoff 1951-80

Lumia and others(2006)

RUNF

SL

Main-channel 10-85 slope, in feet per mile

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

SL_LO

10-85 slope of lower half of main channel in feet per mile.

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)

SL_LO

SL_UP

10-85 slope of upper half of main channel in feet per mile.

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

SR

Slope ratio. Ratio of main channel slope to basin slope

Ratio of main channel slope to basin slope

10m NED

Lumia and others(2006)

SR

ST

Basin storage. Percentage of total drainage area shown as lakes, ponds and swamps

area-weighted mean

1992 NLCD

Lumia and others(2006)

ST

URBCAT21

Land Use Category 21 Urban

area-weighted mean

1992 NLCD

Lumia and others(2006)

URBCAT21

URBCAT2223

Land Use Categories 22 and 23 Urban

area-weighted mean

1992 NLCD

Lumia and others(2006)

URBCAT2223

URBNLCD92

Urban Land Use percentage (1992)

area-weighted mean

1992 NLCD

Lumia and others(2006)

URBNLCD92

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