Site ID:

137

Lat.

8.9951

Colombia

Santander

River:

Magdalena

Long.

-73.9679

Site name:

San Martin de Loba

Contributing area:

161012

km2

Ratio to Comparison Station:

6.93

Latest measurement:

23-Nov-09

Mean annual runoff:

696

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

744

Latest M/C ratio:

1.90

Seven day total:

Estimated current discharge:

3762

m3/sec

Percent of mean 7-day total:

65.4

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

Ice-cover determination:

5 yr recurrence flood:

9211

m3/sec

(from Log Pearson III analysis)

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

9181

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

299

2002

no data

58.3

40.4

56.2

72.8

71.0

604

2003

68.1

45.7

33.6

31.5

44.5

47.4

54.6

52.9

39.5

52.7

50.2

83.3

923

2004

91.9

70.9

46.2

32.1

59.3

81.0

94.7

94.2

56.5

63.9

99.6

132.9

719

2005

86.5

79.3

64.4

49.9

51.6

70.1

62.3

47.2

33.6

40.2

58.0

75.6

572

2006

71.9

65.0

45.1

50.2

54.3

65.9

79.2

47.5

49.1

43.5

0.0

664

2007

82.7

53.6

32.5

36.6

41.4

73.1

53.0

47.3

53.3

53.5

72.8

64.3

744

2008

84.8

54.8

60.2

60.5

47.6

60.3

45.8

57.9

42.6

55.2

63.7

111.2

645

2009

77.4

76.9

72.7

71.1

56.4

56.8

61.9

50.7

44.2

43.3

33.8

0.0

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