Site ID:

722

Lat.

51.9509

River:

Thames

Long.

-1.2927

Site name:

Contributing area:

1596

km2

Ratio to Comparison Station:

0.01

Latest measurement:

13-Nov-09

Mean annual runoff:

1817

(2003-2008)

Hydrologic status:

Normal flow

Total runoff this year:

2008

Latest M/C ratio:

1.02

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

137.9

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

Ice-cover determination:

5 yr recurrence flood:

340

m3/sec

(from Log Pearson III analysis)

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

353

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Montjean (6123100)

Contributing Area:

sq mi

109908

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 monthly means from a station in the region with proportional adjustment for differing drainage areas

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

871

2002

no data

169.9

129.2

158.5

244.2

169.3

1943

2003

370.1

185.6

147.1

100.0

174.8

167.0

162.1

161.7

146.1

111.4

94.1

123.5

1745

2004

169.4

236.8

201.9

164.6

162.4

167.5

141.2

94.4

99.6

97.7

95.1

114.4

1743

2005

108.4

142.8

171.3

95.2

141.3

153.8

46.1

131.0

141.4

109.8

201.1

301.1

1600

2006

124.9

131.0

178.7

117.6

152.9

158.1

172.3

164.5

164.9

235.5

0.0

1915

2007

258.0

136.3

137.5

132.2

130.0

106.6

223.0

173.2

133.4

139.3

174.4

171.0

2008

232.9

124.7

183.6

117.1

140.4

163.9

129.2

118.6

190.6

153.1

207.3

246.5

1260

2009

135.8

125.7

99.7

90.3

90.9

137.8

107.8

134.5

110.0

125.8

101.8

0.0

Mean Annual Runoff:

Standard Deviation:

154

Trend in Annual Runoff (slope)

17.69

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