| Site ID: |
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2219 |
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Lat. |
13.5963 |
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Philippines |
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Bicol |
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| River: |
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Bicol |
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Long. |
123.1819 |
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| Site name: |
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Naga |
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Contributing
area: |
1870 |
km2 |
Ratio to Comparison
Station: |
0.08 |
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| Latest measurement: |
6-Nov-09 |
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Mean annual
runoff: |
5963 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
15193 |
mm |
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| Latest M/C ratio: |
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1.23 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
481 |
m3/sec |
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Percent of
mean 7-day total: |
86.9 |
% |
(today's value compared to
mean for same period, 2003-2007) |
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| Ice-cover determination: |
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5 yr
recurrence flood: |
3236 |
m3/sec |
(from Log Pearson III
analysis) |
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| Status Codes: 1 = Low
flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood |
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2942 |
m3/sec |
(from Gumbel Extreme Value
analysis) |
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| Comparison Station Information: |
Tokwe
Confluence D/s C/s (1495240) |
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Contributing
Area: |
7280 |
sq mi |
23237 |
sq km |
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| (Data from this gaging station are used for the calibration to
discharge, with an adjustment for different contributing areas) |
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| Notes: |
Comparison station is
placeholder, only; this site is not yet calibrated to actual discharge |
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| Discharge and runoff, based on satellite remote sensing (NASA
AMSR-E data) |
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| (For U.S, sites, nearby ground station discharge may also be
shown) |
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2008-Present |
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2002-Present |
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| Annual |
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|
Monthly Total Runoff (mm),
computed from above satellite-based discharge data |
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| Runoff |
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| (mm) |
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Jan |
Feb |
Mar |
April |
May |
June |
July |
Aug |
Sept |
Oct |
Nov |
Dec |
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| 558 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
198.5 |
26.5 |
73.0 |
112.0 |
147.9 |
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| 1127 |
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2003 |
12.9 |
4.3 |
4.8 |
4.6 |
10.4 |
165.7 |
308.4 |
151.0 |
4.6 |
26.6 |
76.6 |
357.3 |
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| 486 |
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2004 |
10.2 |
10.7 |
4.8 |
4.6 |
36.4 |
169.4 |
35.5 |
10.0 |
4.6 |
63.0 |
4.6 |
131.8 |
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| 7892 |
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2005 |
75.9 |
4.3 |
12.8 |
14.4 |
74.3 |
421.4 |
603.0 |
786.3 |
680.5 |
559.3 |
1482.1 |
3177.4 |
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| 8770 |
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2006 |
2687.5 |
1037.3 |
347.4 |
88.5 |
495.8 |
1025.4 |
1204.9 |
839.6 |
205.2 |
838.2 |
0.0 |
0.0 |
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| 11539 |
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2007 |
2179.7 |
910.7 |
119.1 |
15.1 |
82.5 |
1005.4 |
1682.8 |
717.5 |
295.2 |
549.7 |
1542.6 |
2438.9 |
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| 15193 |
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2008 |
2234.1 |
1179.1 |
1389.1 |
1602.3 |
1761.3 |
1043.5 |
452.1 |
453.1 |
603.6 |
1077.4 |
1324.0 |
2073.7 |
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| 9845 |
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2009 |
1839.5 |
1390.7 |
495.1 |
82.3 |
1248.5 |
2015.4 |
1123.5 |
240.3 |
249.6 |
840.4 |
319.3 |
0.0 |
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| Discharge is estimated directly via a rating equation from
the remote sensing data (M/C ratio) shown below. |
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