Site ID: 709 Lat. 47.2696 France 0
River: Cher Long. 1.7011
Site name: 0 Contributing area: 8817 km2 Ratio to Comparison Station: 0.22
Latest measurement: 11-Jul-10 Mean annual runoff: 500 mm (2003-2007)
Hydrologic status: 4 Major flood Total runoff this year: 531 mm
Latest M/C ratio: 1.23 Seven day total: 1 mm
Estimated current discharge: 98 m3/sec Percent of mean 7-day total: 192.1 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 304 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 302 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Blois (6123300)           Contributing Area:   sq mi 40630 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
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
164 2002 no data no data no data no data no data no data no data 34.8 37.8 30.3 25.6 35.4
520 2003 39.1 36.5 39.2 50.2 73.2 71.0 63.4 35.2 25.7 25.3 25.0 36.2
524 2004 39.5 36.6 39.7 47.9 59.3 62.1 64.3 44.2 40.5 26.4 32.4 31.7
467 2005 37.6 39.4 37.2 47.6 57.4 65.8 8.1 40.6 37.2 27.7 31.7 36.7
423 2006 26.7 19.9 29.8 49.7 67.8 63.4 59.5 41.6 33.6 31.0 0.0 0.0
566 2007 31.6 32.4 54.7 64.2 67.3 69.3 62.1 51.0 43.4 37.4 29.5 22.9
531 2008 17.9 29.9 39.1 54.9 64.6 75.1 70.2 43.4 40.5 36.9 26.6 32.0
518 2009 23.9 32.2 33.6 52.9 72.8 65.4 62.9 46.9 37.6 35.7 24.1 30.6
Mean Annual Runoff: 505 Standard Deviation: 51
Trend in Annual Runoff (slope):  3.1
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
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