Site ID:

2561

Lat.

13.3186

El Salvador

River:

Grande De San Miquel

Long.

-88.2653

Site name:

Contributing area:

2058

km2

Ratio to Comparison Station:

0.04

Latest measurement:

12-Oct-09

Mean annual runoff:

332

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

881

Latest M/C ratio:

1.08

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

83.2

(today's value compared to mean for same period, 2003-2007)

Ice-cover determination:

5 yr recurrence flood:

211

m3/sec

(from Log Pearson III analysis)

Status Codes: 1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood

198

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Boca del Cerro (4362600)

Contributing Area:

sq mi

50458

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

2002

no data

0.0

2003

0.0

2004

0.0

541

2005

0.0

3.3

67.3

67.9

9.0

0.0

103.9

85.2

76.2

61.7

66.5

252

2006

39.7

0.0

97.2

66.4

49.1

0.0

869

2007

76.9

51.6

71.7

49.9

37.4

71.0

80.3

100.0

79.6

124.1

62.3

63.8

881

2008

86.6

57.8

79.9

55.1

50.7

62.2

73.2

73.4

112.8

77.8

77.5

73.8

684

2009

79.5

75.3

81.5

77.1

37.1

62.6

96.6

79.6

66.8

27.9

0.0

Mean Annual Runoff:

424

Standard Deviation:

402

Trend in Annual Runoff (slope)

701.2

Discharge is estimated directly via a rating equation from the remote sensing data (M/C ratio) shown below.