General Information

Project area general description
The state of Missouri
Are any areas excluded?
The Chariton, Novinger, Osage, Mississippi and Missouri Rivers.
Types of flow statistics available
Low flow, rural and urban peak flows statewide.
ArcGIS version used for processing
ArcGIS 10.2
Was TopoGrid used to process DEMs?
No.
DEM and derivatives projection (general description)
Albers Equal Area for conterminous US
DEM and derivatives (fdr, fac, etc.) resolution
10 meter
DEM source
NED 10m dataset (https://viewer.nationalmap.gov/basic/)
Hydrography source
NHD dataset (24,000) https://nhd.usgs.gov/
Hydrologic unit "walls" source
WBD dataset (HUC-8 level)  (https://nhd.usgs.gov/wbd.html)
Gage basin boundaries source
not used
Interactive map snapping tolerance
6 cells


Basin Characteristics Methods and Sources

Name
Description
Computation Method
Data Source
Report
Variable label in report
BSHAPE
Basin Shape (BSHAPE = LFPLength^2 / DRNAREA)
Custom
(BSHAPE = LFPLength^2 / DRNAREA)
GlobalWatershed
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
not used
SHAPE
not used
BSHAPE
CN
Curve number from 2014-5193
area-weighted mean
Grid constructed with SSURGO dataset  (https://websoilsurvey.nrcs.usda.gov/) and NLCD01 dataset (http://www.mrlc.gov/nlcd01_data.php) with methods described in SIR 2014-5193
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
not used
not used
CN
not used
CSL10_85
10-85 slope, in feet per mile
average
Average of slope of 10-m DEM computed at 10% and 85% LFPLENGTH
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
not used
CSL1085LFP
CSL1085LFP
CSL1085LFP
DRNAREA
Drainage area in square miles
polygon area
GlobalWatershed
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
DRNAREA
DRNAREA
DRNAREA
DRNAREA
IMPNLCD01
Percentage of area covered by impervious surfaces, from NLCD 2001
area-weighted mean
NLCD 2001 imperviousness grid http://www.mrlc.gov/nlcd01_data.php
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
IMPNLCD01
not used
IMPNLCD01
not used
LFPLENGTH
Length of associated Longest Flow Path in miles
length
GlobalWatershed
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
not used
LFPLENGTH
not used
LFPLENGTH
STREAM_VARG
Streamflow variability index as defined in WRIR 02-4068, computed from regional grid.
average    
Streamflow variability index grid as computed in SIR 2013-5090
Southard (2010)
Southard (2013)
Huizinga (2014)
Southard (2014)
not used
STREAM_VAR
not used
not used

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