Site ID: 2320 Lat. -17.8525 Australia Western Australia
River: Fitzroy Mouth Long. 123.7149
Site name: Udialla Contributing area: 88683 km2 Ratio to Comparison Station: 1.77
Latest measurement: 9-Jan-10 Mean annual runoff: 347 mm (2003-2007)
Hydrologic status: 2 Normal flow Total runoff this year: 312 mm
Latest M/C ratio: 1.07 Seven day total: 1 mm
Estimated current discharge: 1053 m3/sec Percent of mean 7-day total: 77.6 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 6489 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 6454 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Fitzroy Crossing (5608024)         Contributing Area: 7280 sq mi 50014 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 monthly mean, maximum, and minimum M/C compared to gaging station discharge values.
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
94 2002 no data no data no data no data no data no data no data 15.2 15.1 18.5 21.5 23.5
342 2003 43.4 36.2 57.4 46.7 23.2 17.6 18.7 18.3 18.1 19.0 17.2 25.7
367 2004 29.5 47.6 69.1 28.0 24.7 26.1 18.1 18.4 18.2 19.0 29.6 38.5
324 2005 34.2 35.4 51.3 26.8 17.9 22.4 29.5 21.2 17.6 18.2 24.9 24.2
345 2006 59.8 70.0 58.4 38.2 25.9 18.1 18.2 19.2 17.9 19.1 0.0 0.0
357 2007 34.9 30.4 50.7 63.3 32.6 20.0 18.7 19.4 18.2 19.9 18.7 30.1
312 2008 42.5 55.2 40.4 30.3 19.6 16.2 17.9 17.9 17.3 17.9 17.3 18.9
440 2009 46.1 143.4 49.9 25.2 18.8 18.4 18.2 17.9 17.6 19.5 31.1 34.1
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
2320.jpg
Return