Site ID: 2508 Lat. 21.4908 Mexcio Veracruz
River: Tempoal Long. -98.4063
Site name: Tempoal Contributing area: 5184 km2 Ratio to Comparison Station: 0.06
Latest measurement: 10-Jan-10 Mean annual runoff: 153 mm (2003-2007)
Hydrologic status: 2 Normal flow Total runoff this year: 154 mm
Latest M/C ratio: 1.00 Seven day total: 1 mm
Estimated current discharge: 28 m3/sec Percent of mean 7-day total: 90.9 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 108 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 113 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Las Adjuntas (4358300)         Contributing Area:   sq mi 86315 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
183 2002 no data no data no data no data no data no data no data 11.2 131.9 12.9 14.2 12.6
182 2003 12.5 10.6 9.9 14.7 12.3 21.4 21.8 21.1 21.2 11.7 9.8 15.0
143 2004 15.3 14.7 8.3 5.8 6.1 19.2 13.1 10.0 8.6 14.1 13.8 14.3
152 2005 12.2 12.6 16.7 16.6 14.0 11.1 3.0 9.8 10.8 12.3 14.7 17.9
101 2006 13.4 10.3 10.3 7.1 8.6 9.6 10.5 8.8 7.6 15.1 0.0 0.0
189 2007 13.0 12.6 11.0 9.3 12.4 23.0 39.0 18.8 14.6 13.6 11.0 10.6
154 2008 13.5 12.1 10.9 7.6 13.3 15.8 14.5 11.1 17.7 13.9 11.8 11.8
165 2009 15.6 13.6 12.9 13.4 13.5 9.9 12.4 28.6 8.9 12.5 11.6 11.7
Mean Annual Runoff: 153 Standard Deviation: 31
Trend in Annual Runoff (slope):  9.43
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
Return 2508.jpg