Site ID:

889

Lat.

70.1639

USA

River:

Coleville

Long.

-150.9292

Site name:

Contributing area:

57700

km2

Ratio to Comparison Station:

1.15

Latest measurement:

12-Nov-09

Mean annual runoff:

157

(2003-2007)

Hydrologic status:

Ice covered

Total runoff this year:

160

Latest M/C ratio:

1.20

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

125.0

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

Ice-cover determination:

5 yr recurrence flood:

1884

m3/sec

(from Log Pearson III analysis)

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

1893

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Hughes, Alas. (4103500)

Contributing Area:

sq mi

50305

sq km

(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)

Notes:

Rating equation is based on comparison of summer monthly means from a station in the region; ice-covered constant discharge of 54 m3/sec is assumed.

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

149

2003

0.0

1.1

2.4

-3.7

20.0

62.5

47.5

15.9

0.3

0.5

2.5

179

2004

2.5

2.4

2.5

2.4

1.0

21.7

66.2

49.7

32.3

-6.6

2.4

2.5

170

2005

2.5

2.3

2.5

2.4

2.5

11.9

58.0

50.3

35.8

1.4

0.0

0.2

103

2006

2.5

2.3

2.5

2.4

-3.2

35.8

58.4

1.8

0.0

178

2007

2.5

2.3

2.5

2.4

2.5

32.5

62.0

53.2

42.6

-29.1

2.4

2.2

160

2008

2.5

2.4

2.5

2.4

-0.4

34.3

65.3

43.3

33.9

-29.2

1.1

2.5

166

2009

2.5

2.3

2.5

1.4

-0.7

34.6

60.1

46.2

21.2

-5.2

1.2

0.0

Mean Annual Runoff:

157

Standard Deviation:

Trend in Annual Runoff (slope)

2.13

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