General Information

Project area general description
The state of Mississippi
Are any areas excluded?
Mississippi River (HUC 08010100, 08020100, 08030100, 08060100;  The Lower Mississippi River Alluvial Plain (Delta) ; West Pascagoula downstream of the East/West divergence; Jourdan (HUC 03170009), and area outside of the state.
Types of flow statistics available
Not Implemented
ArcGIS version used for processing
Originally 9.1, with some updates using 9.2 and 9.3, 10.1, 10.2
Was TopoGrid used to process DEMs?
Yes
DEM and derivatives projection (general description)
Mississippi Transverse Mercator (MSTM)
DEM and derivatives (fdr, fac, etc.) resolution
10m
DEM source
Mississippi Automated Resource Information System (MARIS) (2008)
National Hydrography Dataset (NHD) High Resoluation 1:24,000 (2008-2009)
National Hydrography Dataset (NHD) High Resoluation 1:24,000 (2008-2009)
Hydrologic unit "walls" source
Watershed Boundary Dataset (WBD), HUC8 and HUC12 (2008-2009)
Gage basin boundaries source
Not used
Interactive map snapping tolerance
3 cells



Basin Characteristics Methods and Sources

Name
Description
Computation method
Data source

Report

Variable label in report
DRNAREA
Drainage area in square miles
Basin area
DEM
n/a
n/a
LC11ADEV
Area of developed land-use from NLCD 2011 classes 21-24
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11DEV
Percentage of land-use from NLCD 2011 classes 21-24
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11ADVOPN
Area of developed open land from NLCD 2011 class 21
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11ADEVLO
Area of developed land, low intensity, from NLCD 2011 class 2
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11ADEVMD
Area of developed land, medium intensity, NLCD 2011 class 23
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11ADEVHI
Area of developed land, high intensity, NLCD 2011 class 24
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11DEVLMH
Percentage of land-use from NLCD 2011 classes 22-24 low to high developed
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11DINT
Development intensity computed as impervious percentage from NLCD 2011 classes A21 to A24 = ((.10*A21+.25*A22+.65*A23+.90*A24)/DA)*100
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11FOREST
Percentage of forest determined from NLCD 2011  classes 41-43
Basin percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11AWATER
Area of water from NLCD 2011 class 11
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11WATER
Percentage of Open Water from NLCD 2011 class 11
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11AWETL
Area of wetlands from NLCD 2011 classes 90 and 95
Area, square miles
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11WETLND
Percentage of wetlands, classes 90 and 95, from NLCD 2011
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
LC11STOR
Percentage of water bodies and wetlands determined from the NLCD 2011
Percent
NLCD 2011 - http://www.mrlc.gov/nlcd11_data.php
n/a
n/a
CSL10_85fm
Change in elevation between points 10 and 85 percent of length along main channel to basin divide divided by length between points ft per mi
Feet per mile
ArcHydro Tools LFPathOp, DEM
n/a
n/a
LFPLENGTH
Length of longest flow path
Miles
ArcHydro Tools LFPathOp, GlobalWatershed
n/a
n/a
LAT_CENT
Latitude of Basin Centroid
Decimal degrees
Centroidlabels, GlobalWatershed
n/a
n/a
LONG_CENT
Longitude Basin Centroid
Decimal degrees
Centroidlabels, GlobalWatershed
n/a
n/a
ELEVMAX
Maximum basin elevation
Feet
DEM
n/a
n/a
MINBELEV
Minimum basin elevation
Feet
DEM
n/a
n/a