Site ID: 2574 Lat. 33.6574 USA 0
River: Chattahoochee Long. -84.6738
Site name: 0 Contributing area: 2341 km2 Ratio to Comparison Station: 0.05
Latest measurement: 10-Jan-10 Mean annual runoff: 313 mm (2003-2008)
Hydrologic status: 2 Normal flow Total runoff this year: 447 mm
Latest M/C ratio: 1.02 Seven day total: 1 mm
Estimated current discharge: 22 m3/sec Percent of mean 7-day total: 101.2 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 165 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 143 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Chattahoochee, Fla. (4149630)         Contributing Area:   sq mi 44163 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Discharge calibration based on comparison of monthly means (maximum flows, minimum flows and mean discharge) from a station in the region
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
2008-Present
2002-Present
Annual  Monthly Total Runoff (mm), computed from above satellite-based discharge data
Runoff
(mm) Jan Feb Mar April May June July Aug Sept Oct Nov Dec
0 2002 no data no data no data no data no data no data no data 0.0 0.0 0.0 0.0 0.0
0 2003 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 2004 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
223 2005 0.0 0.0 3.0 42.5 35.1 3.5 0.0 25.6 18.8 30.7 32.0 32.2
137 2006 22.5 0.0 0.0 0.0 0.0 0.0 0.0 44.0 41.5 29.0 0.0 0.0
447 2007 50.0 29.2 41.6 40.3 39.7 37.1 27.1 24.8 30.1 36.5 49.8 40.5
447 2008 51.3 44.6 46.8 34.2 30.6 26.0 32.4 28.4 38.1 35.8 38.3 40.1
570 2009 51.3 36.7 40.5 46.8 30.6 24.5 22.9 21.6 182.3 35.1 39.7 37.6
Mean Annual Runoff: 313 Standard Deviation: 203
Trend in Annual Runoff (slope):  97.9
Discharge is estimated directly via a rating equation from the remote sensing data (M/C ratio) shown below.
Explanation:   Green line records upwelling microwave emission from a land parcel (ca 10 km x 10 km) near the river; blue line from a parcel centered over the river.
Brown line is their ratio (M/C; scale on right) and is used to estimate river discharge via a rating equation.
Rating equations are being developed and applied on an individual basis. For calibration status, see "notes" entry, above.
When data above show calibration site values lower than for the measurement site, discharge estimation may not be possible.
GoogleEarth View of Measurement Site
2574.jpg
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