General Information

Project area general description

All of Pennsylvania and drainage into PA from MD, NJ, NY, OH, and WV

Are any areas excluded?

No

Types of flow statistics available

Low flows, base flows, mean flows, and peak flows

ArcGIS version used for processing

9.3

Was TopoGrid used to process DEMs?

Yes

DEM and derivatives projection (general description)

PA Albers: CM = -78.0; SP1 = 40.0; SP2 = 42.0: LoO= 39.0

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

Original 30m, processed into 10 m

DEM source

USGS elevation database 30-meter data circa 2003

Hydrography source

NHD 24K centerline flow circa 2003

Hydrologic unit "walls" source

small watershed dataset for PA (http://pa.water.usgs.gov/infodata/gisdata.php)

Gage basin boundaries source

based on small watershed dataset

Interactive map snapping tolerance

Not specified

 

Basin Characteristics Methods and Sources

Name

Description

Computation method

Data source

Report

Variable label in report

BSLOPD

Adjusted basin slope, in degrees

area-weighted mean

(2003) NED 30m

Stuckey, M.H. 2006

Sl

BSLOPDRAW

Unadjusted basin slope, in degrees

area-weighted mean

(2003) NED 30m

Stuckey, M.H. 2006

Sl

CARBON

Percent of area covered by carbonate bedrock

percent of area

1980 Geology Map of PA

Roland, M.A., and Stuckey, M.H., 2008

 

C

 

 

 

 

Stuckey, M.H. 2006

C

CENTROIDX

X coordinate of the centroid, in map projection, meters

ArcHydro

Global Watershed determined from DEM and derived flow-direction grid

 

 

 

 

 

 

 

 

CENTROIDY

Y coordinate of the centroid, in map projection, meters

ArcHydro

Global Watershed determined from DEM and derived flow-direction grid

 

 

 

 

 

 

 

 

DRN

Drainage quality index from STATSGO

area-weighted mean

(2003) STATSGO

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

DRN

DRNAREA

Area in square miles

polygon area

Global watershed determined from DEM and derived flow-direction grid

Roland, M.A., and Stuckey, M.H., 2008

 

DA

 

 

 

 

Stuckey, M.H. 2006

DA

 

 

 

 

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

DA

ELEV

Mean Basin Elevation in feet

area-weighted mean

(2003) NED 30m

Roland, M.A., and Stuckey, M.H., 2008

 

El

 

 

 

 

Stuckey, M.H. 2006

El

FOREST

Percent of area covered by forest

percent of area

Enhanced NLCD 1992

Stuckey, M.H. 2006

F

GLACIATED

Percent of area covered by glacial activity

percent of area

Late Wisconsin Glacial Border 1995

Stuckey, M.H. 2006

Gla

IMPNLCD01

Percentage of impervious area determined from NLCD 2001 impervious dataset

percent of area

NLCD 2001 Impervious dataset

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

Imp

LONG_OUT

Longitude of the outlet, in decimal degrees

ArcHydro

map

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

Long

MAXTEMP

Maximum Daily Temperature in degrees F

area-weighted mean

(2003) PRISM data 1971-2000

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

MaxT

OUTLETX

X coordinate of the outlet, in map projection, meters

ArcHydro

map

 

 

OUTLETY

Y coordinate of the outlet, in map projection, meters

ArcHydro

map

 

 

PRECIP

Mean annual precipitation in inches

area-weighted mean

(2003) PRISM data 1971-2000

Stuckey, M.H. 2006

PPT

 

 

 

 

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

Ppt

ROCKDEP

Depth to rock in feet

area-weighted mean

(2003) STATSGO

Stuckey, M.H. 2006

Thk

 

 

 

 

Stuckey, M.H., Koerkle, E.H., and Ulrich, J.E., 2012

Thk

STORAGE

Percent of area covered by lakes, ponds, reservoirs and wetlands

percent of area

(2003) 100K DLG and 24K DLG polygon data

Roland, M.A., and Stuckey, M.H., 2008

Sto

STRDEN

Stream density (miles/square mile)

length/area

(2003) NHD 24K, centerline flow

Stuckey, M.H. 2006

Den

SUMSTREAMS

Total stream length in miles

length

(2003) NHD 24K, centerline flow

 

 

URBAN

Percent of area covered by urban land according to an enhanced version of NLCD 1992

percent of area

Enhanced NLCD 1992

Roland, M.A., and Stuckey, M.H., 2008

U

 

 

 

 

Stuckey, M.H. 2006

U

URBNLCD01

Percentage of urban land cover determined from NLCD 2001 land cover dataset

percent of area

NLCD 2001 Landcover

www.mrlc.gov

codes 21-24

 

 

 

 

 

 

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