General Information
Project area general description |
The state of Georgia |
Are any areas excluded? |
All areas outside the state of Georgia, coastal areas and the Okefenokee Swamp |
Types of flow statistics available |
Peak flows |
ArcGIS version used for processing |
9.3.1 |
Was TopoGrid used to process DEMs? |
No |
DEM and derivatives projection (general description) |
NAD 1983 Albers |
DEM and derivatives (fdr, fac, etc.) resolution |
10 m |
DEM source |
NED 2004 |
Hydrography source |
High-resolution NHD 1:24,000-scale |
Hydrologic unit "walls" source |
WBD |
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 |
10m DEM and 10m Flow direction grid |
Drainage area (mi2) |
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LC06FOREST |
Percent of area covered by forest using 2006 NLCD |
Basin average |
http://www.mrlc.gov/nlcd06_data.php |
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LC06AGRI |
Percent of area covered by agriculture using 2006 NLCD |
Basin average |
http://www.mrlc.gov/nlcd06_data.php |
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LC06DEV |
Percent of area covered by developed areas using 2006 NLCD |
Basin average |
http://www.mrlc.gov/nlcd06_data.php |
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LC06IMP |
Percent of area covered by impervious surface 2006 NLCD |
Basin average |
http://www.mrlc.gov/nlcd06_data.php |
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ELEV |
Average basin elevation from 10-m DEM, in feet |
Basin average, using DEM |
Computed from DEM |
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CSL10_85FM |
10-85 slope in feet per mile based on longest flow path and DEM |
Computed Stream Slope |
Computed using StreamSlope ArcHydro tool |
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BSLDEM10M |
Channel 10-85 slope in feet per mile |
Computed Basin Slope |
Computed using BasinSlope ArcHydro tool |
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PRECIP |
Mean annual precipitation in inches |
Basin average |
NOAA Atlas 14 Precipitation Frequency Estimates |
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I24H10Y |
Precipitation intensity 24-hour 10-year |
Basin average |
NOAA Atlas 14 Precipitation Frequency Estimates |
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I24H25Y |
Precipitation intensity 24-hour 25-year |
Basin average |
NOAA Atlas 14 Precipitation Frequency Estimates |
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I24H50Y |
Precipitation intensity 24-hour 50-year |
Basin average |
NOAA Atlas 14 Precipitation Frequency Estimates |
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I24H100Y |
Precipitation intensity 24-hour 100-year |
Basin average |
NOAA Atlas 14 Precipitation Frequency Estimates |
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PCTREG1 |
Percent of area covered by hydrologic region 1 |
Basin percent |
Region boundary used in report |
Hydrologic region 1 |
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PCTREG2 |
Percent of area covered by hydrologic region 2 |
Basin percent |
Region boundary used in report |
Hydrologic region 2 |
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PCTREG3 |
Percent of area covered by hydrologic region 3 |
Basin percent |
Region boundary used in report |
Hydrologic region 3 |
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PCTREG4 |
Percent of area covered by hydrologic region 4 |
Basin percent |
Region boundary used in report |
Hydrologic region 4 |
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PCTREG5 |
Percent of area covered by hydrologic region 5 |
Basin percent |
Region boundary used in report |
Hydrologic region 5 |
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The Georgia StreamStats introductory page here has additional information regarding the application, including links to reports, cooperators, and other explanatory information.