Site ID:

2554

Lat.

8.4653

Panama

River:

Chiriqui Viejo

Long.

-82.8315

Site name:

Contributing area:

932

km2

Ratio to Comparison Station:

0.02

Latest measurement:

12-Oct-09

Mean annual runoff:

531

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

848

Latest M/C ratio:

0.98

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

89.9

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

Ice-cover determination:

5 yr recurrence flood:

m3/sec

(from Log Pearson III analysis)

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

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:

Discharge calibration based on comparison of monthly means (maximum flows, minimum flows and mean discharge) 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

2002

no data

0.0

2003

0.0

2004

0.0

456

2005

0.0

1.5

73.9

67.3

3.3

0.0

83.5

55.2

45.6

64.3

61.5

250

2006

44.7

0.0

66.6

63.2

75.9

0.0

885

2007

93.1

51.2

73.4

70.3

96.9

69.4

88.6

94.1

63.1

68.5

54.5

62.1

848

2008

68.2

86.3

82.3

76.5

76.2

55.7

64.5

80.3

69.4

55.7

65.2

68.0

715

2009

78.8

63.8

76.3

75.0

82.0

77.9

77.5

84.3

64.7

34.8

0.0

Mean Annual Runoff:

610

Standard Deviation:

395

Trend in Annual Runoff (slope)

180.92

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