Site ID: 1220 Lat. -22.3678 Chile 0
River: Loa Long. -69.5972
Site name: 0 Contributing area: 14890 km2 Ratio to Comparison Station: 0.96
Latest measurement: 16-Nov-09 Mean annual runoff: 140 mm (2003-2007)
Hydrologic status: 2 Normal flow Total runoff this year: 76 mm
Latest M/C ratio: 0.97 Seven day total: 1 mm
Estimated current discharge: 40 m3/sec Percent of mean 7-day total: 52.3 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 227 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 219 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Cabimbao (3179200)           Contributing Area:   sq mi 15437 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 montly means from a distant 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
65 2002 no data no data no data no data no data no data no data 12.8 12.0 13.4 11.3 15.8
202 2003 10.7 12.3 14.3 17.5 22.5 19.7 19.6 18.5 21.6 21.8 13.2 10.8
225 2004 14.6 12.6 12.0 18.6 24.3 26.2 25.2 22.7 3.2 21.8 21.7 21.7
156 2005 2.1 12.6 18.4 10.8 13.2 23.5 22.3 16.8 15.2 14.9 3.9 2.4
53 2006 8.2 5.5 0.4 2.4 4.0 7.2 7.6 6.1 6.8 4.7 0.0 0.0
61 2007 1.0 2.8 2.0 5.0 5.4 4.0 8.6 6.6 8.5 5.6 6.8 4.8
76 2008 2.6 2.0 3.2 5.9 8.8 10.8 9.3 7.7 7.6 6.3 6.1 5.2
72 2009 2.3 2.1 4.6 6.9 9.3 11.0 12.6 9.4 5.7 5.3 3.1 0.0
Mean Annual Runoff: 129 Standard Deviation: 76
Trend in Annual Runoff (slope):  -3.5
Discharge is estimated directly via a rating equation from the remote sensing data (M/C ratio) shown below.