General Information

Project area general description
The state of North Dakota
Are any areas excluded?
The Missouri River, Yellowstone River, and the Red River of the North/Bois de Sioux River
Types of flow statistics available
Peak flows statewide
ArcGIS version used for processing
ArcGIS9.3, with some updates in 10.1
Was TopoGrid used to process DEMs?
No
DEM and derivatives projection (general description)
USA_Contibuous_Albers_Equal_Area_Conic_USGS_version, horizontal datum NAD83, vertical datum NAVD88
DEM and derivatives (fdr, fac, etc.) resolution
 10 m
DEM source
10-meter National Elevation Dataset (NED)
Hydrography source
Nationial Hydrography Dataset, High-resolution NHD  1:24,000-scale
Hydrologic unit "walls" source
Watershed Boundary Dataset
Gage basin boundaries source
Not used
Interactive map snapping tolerance
3 cells
Basin characteristics computed using continuous parameter grids (CPGs)
none

 

Basin Characteristics Methods and Sources

Name
Description
Computation method
Data source

Report

Variable in report
DRNAREA
Total area that drains to a point on a stream,in square miles
Pologon area
GlobalWatershed
Williams-Sether, Tara, 2015, Regional regression equations to, estimate peak-flow frequency at sites in North Dakota using data through 2009: U.S. Geological Survey Scientific Investigations Report 2015-5096, 12 p., http://dx.doi.org/10.3133/sir20155096.
DRNAREA
AG_OF_DA
Agricultural land in percentage of drainage area
Percent area in NLCDD categories 81-85
NLCD 2011
 
 
BSLDEM10M
Mean basin slope computed from 10 m DEM, in percent
Area-weighted mean of slope grid bsldem10m
U.S. Geological Survey, 2007, 1/3-arc-second Naitonal elevation dataset
 
 
CSL1085LFP
10-85 slope, in feet per mile. Computed based on longest flow path using 10-mDEMS
ArcHydro Tools LFPathOp
Hydro-enforced DEMº derivatives (fdr and dem)
Williams-Sether, Tara, 2015, Regional regression equations to estimate peak-flow frequency at sites in North Dakota using data through 2009: U.S. Geological Survey Scientific Investigations Report 2015-5096, 12 p., http://dx.doi.org/10.3133/sir20155096.
CSL1085LFP
ELEV
Mean basin elevation, in feet
Area-weighted mean
U.S. Geological Survey, 2007, 1/3-arc-second National elevation dataset
 
 
PRECIP
Mean annual precipitation, in inches
Area-weighted mean
PRISM, 1961-90 normal period
 
 
SLOPERAT
Slope ratio
Main channel slope divided by basin slope
U.S. Geological Survey, 2007, 1/3-arc-second National elevation dataset
 
 
SOILPERM
Average soil permeability
Basin average
SSURGO
 
 
BASINPERIM
Perimeter of the drainage basin as defined in SIR 2004-5262, in miles
 
 
 
 
COMPRAT
Compactness ratio- a measure of the basin shape related to the basin perimeter and drainage area
 
 
Williams-Sether, Tara, 2015, Regional regression equations to, estimate peak-flow frequency at sites in North Dakota using data through 2009: U.S. Geological Survey Scientific Investigations Report 2015-5096, 12 p., http://dx.doi.org/10.3133/sir20155096.
COMPRAT
LFPLENGTH
Length of longest flow path, in miles
 
 
 
 
STRMTOT
Total length of mapped streams in basin, in miles
Sum
High-resolution NHD
 
 
ELEVMAX
Maximum basin elevation, in feet
Maximum
U.S. Geological Survey, 2007, 1/3-arc-second National elevation dataset
 
 
MINBELEV
Minimum basin elevation, in feet
Minimum
>U.S. Geological Survey, 2007, 1/3-arc-second National elevation dataset
 
 
RUGGED
Ruggedness number computed as stream density times basin relief
 
 
Williams-Sether, Tara, 2015, Regional regression equations to, estimate peak-flow frequency at sites in North Dakota using data through 2009: U.S. Geological Survey Scientific Investigations Report 2015-5096, 12 p., http://dx.doi.org/10.3133/sir20155096.
RUGGED
LC11IMP
Average percentage of impervious area
Area-weighted mean
NLCD 2011 impervious dataset
 
 
LC11DEV
Percentage of drainage area in NLCD land use classes 21-24
Percent of area
NLCD 2011