Site ID:

2575

Lat.

37.9018

USA

Illinois

River:

Big Muddy

Long.

-89.0129

Site name:

Plumfield

Contributing area:

2258

km2

Ratio to Comparison Station:

0.14

Latest measurement:

13-Oct-09

Mean annual runoff:

233

(2003-2008)

Hydrologic status:

Normal flow

Total runoff this year:

274

Latest M/C ratio:

1.03

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

97.8

(today's value compared to mean for same period, 2003-2007)

Ice-cover determination:

5 yr recurrence flood:

119

m3/sec

(from Log Pearson III analysis)

Status Codes: 1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood

102

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Waterville, Ohio (4135200)

Contributing Area:

sq mi

16629

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

177

2005

0.0

3.7

18.7

25.9

3.3

0.0

13.0

26.3

22.6

32.4

31.0

2006

6.0

0.0

28.4

32.3

26.4

0.0

387

2007

38.1

16.3

36.3

31.0

30.2

49.7

33.8

46.2

38.4

21.9

22.1

23.4

274

2008

34.0

31.3

47.0

36.2

14.1

9.8

15.8

15.6

8.3

17.7

23.9

20.1

221

2009

24.5

18.7

27.1

21.8

44.2

12.9

19.9

24.0

13.8

14.4

0.0

Mean Annual Runoff:

233

Standard Deviation:

155

Trend in Annual Runoff (slope)

54.8

Discharge is estimated directly via a rating equation from the remote sensing data (M/C ratio) shown below.