Site ID:

2574

Lat.

33.6574

USA

River:

Chattahoochee

Long.

-84.6738

Site name:

Contributing area:

2341

km2

Ratio to Comparison Station:

0.05

Latest measurement:

13-Oct-09

Mean annual runoff:

313

(2003-2008)

Hydrologic status:

Normal flow

Total runoff this year:

447

Latest M/C ratio:

1.01

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

52.3

(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

2002

no data

0.0

2003

0.0

2004

0.0

223

2005

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

44.0

41.5

29.0

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

469

2009

51.3

36.7

40.5

46.8

30.6

24.5

22.9

182.3

10.3

0.0

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.