Site ID: 2385 Lat. -30.2958 Australia New South Wales
River: Namoi Long. 148.8351
Site name: Pilliga Contributing area: 35699 km2 Ratio to Comparison Station: 1.54
Latest measurement: 13-Oct-09 Mean annual runoff: 280 mm (2003-2007)
Hydrologic status: 2 Normal flow Total runoff this year: 325 mm
Latest M/C ratio: 1.11 Seven day total: 1 mm
Estimated current discharge: 38 m3/sec Percent of mean 7-day total: 8.8 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 3424 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 3522 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Tokwe Confluence D/s C/s (1495240)       Contributing Area: 7280 sq mi 23237 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Comparison station is placeholder, only; this site is not yet calibrated to actual discharge
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
139 2002 no data no data no data no data no data no data no data 8.3 14.2 27.9 36.9 52.3
274 2003 68.3 52.8 38.7 53.3 11.7 2.6 0.9 9.2 3.5 3.7 8.0 21.9
268 2004 37.9 35.1 27.8 13.9 8.0 2.0 4.9 7.6 4.7 1.3 15.3 109.4
275 2005 36.2 27.1 15.3 6.9 5.7 16.7 88.3 20.4 6.0 5.2 28.6 19.0
184 2006 22.5 28.6 28.0 34.8 15.3 13.3 25.7 7.7 1.8 6.6 0.0 0.0
400 2007 25.7 34.1 64.0 28.3 31.0 28.2 9.8 8.1 8.1 20.9 55.7 85.8
325 2008 52.0 59.8 46.2 28.9 18.6 21.8 8.9 6.3 17.3 11.7 23.8 30.1
105 2009 27.7 25.9 13.7 14.9 9.6 4.4 4.1 0.6 2.6 1.0 0.0 0.0
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.
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