Site ID: 2201 Lat. 17.1794 Philippines Cagayan Valley
River: Cagayan Long. 121.8731
Site name: Ilagan Contributing area: 15268 km2 Ratio to Comparison Station: 0.71
Latest measurement: 6-Nov-09 Mean annual runoff: 755 mm (2003-2008)
Hydrologic status: 3 Flood Total runoff this year (2010): 0 mm 2010
Latest M/C ratio: 1.53 Seven day total: 29 mm
Estimated current discharge: 1393 m3/sec Percent of mean 7-day total: 137.4 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 1799 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1692 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Temerloh (5224500)           Contributing Area:   sq mi 21579 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes:
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
189 2002 no data no data no data no data no data no data no data 28.0 33.2 46.0 54.1 28.2
490 2003 35.6 53.1 52.7 51.3 44.1 30.0 34.3 36.3 40.6 43.7 40.2 28.0
460 2004 26.8 45.5 57.2 39.3 46.7 40.6 23.8 31.2 42.4 51.9 33.9 20.4
819 2005 18.3 40.6 59.6 63.2 70.4 89.4 40.8 60.3 68.3 74.5 110.6 123.3
787 2006 114.0 74.4 78.5 68.5 69.2 71.0 70.2 98.3 68.4 74.2 0.0 0.0
970 2007 97.7 74.7 63.2 51.5 76.4 89.5 66.7 62.2 67.9 90.5 111.6 118.1
1005 2008 99.5 70.9 75.5 60.5 106.2 77.0 69.4 58.7 61.0 72.2 121.3 133.1
884 2009 94.1 68.3 73.4 75.0 104.8 114.3 68.3 64.5 71.7 105.4 44.1 0.0
0 2010 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 9 Standard Deviation: 218
Trend in Annual Runoff (slope):  78.7
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.