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PAGASA The Weather and Climate Authority
Payong
PAGASA
STATUS OF MONITORED MAJOR DAMS
RICHARD C. ORENDAIN HYDRO-METEOROLOGY DIVISION
CLIMATE OUTLOOK FORUM
MAY 30, 2018
Philippine Atmospheric, Geophysical and Astronomical Services Administration
RWL 190.03 NHWL 210
24-HR Deviation -0.22 Rule Curve 183.69
Philippine Atmospheric, Geophysical and Astronomical Services Administration
RWL 239.60 NHWL 280
24-HR Deviation 0.32 Rule Curve 233.37
Philippine Atmospheric, Geophysical and Astronomical Services Administration
RWL 181.62 NHWL 221
24-HR Deviation -0.10 Rule Curve 199.14
Philippine Atmospheric, Geophysical and Astronomical Services Administration
RWL 179.70 NHWL 193
24-HR Deviation -0.05 Rule Curve 173.99
DAM UPDATE AS OF 6AM, 30 MAY 2018 DAM RWL (m) WL Deviation NHWL (m)
Deviation from NHWL
(m)
Rule Curve Elevation
(m)
Deviation from Rule Curve
(m)
ANGAT 190.03 q 0.22 210 -19.97 183.69 6.34
IPO 101.03 q 0.01 101 0.03
LA MESA 70.93 q 0.1 80.15 -9.22
AMBUKLAO 746.64 q 0.06 752 -5.36 745 1.64
BINGA 569.15 q 0.11 575 -5.85 565 4.15
SAN ROQUE 239.6 p 0.32 280 -40.4 233.37 6.23
PANTABANGAN 181.62 q 0.1 221 -39.38 199.14 -17.52
MAGAT 179.7 q 0.05 193 -13.3 173.99 5.71
CALIRAYA 287.1 q 0.15
Dam
Forecast Basin
Rainfall (mm)
Dam Allocation
(cms)
Expected RWL (amsl) given
Forecast Rainfall (using Nomogram)
(c=0.8)
Rule Curve (June 30)
Deviation from the
Rule Curve
Normal High Water Level
(NHWL)
Estimated Basin Rainfall
to reach NHWL (mm)
ANGAT 311.64 46 191.26
(190.03) 181.90 9.36 210 1049.20
SAN ROQUE 338.13 39 239.73
(239.60) 235.22 4.51 280 1678.39
PANTABANGAN 253.61 43 183.94
(181.62) 200.55
-16.61 216 2230.98
MAGAT 275.89 90 SP LEVEL
(193)
(179.70) 175.48 190 156.40
ASSESSMENT LEVEL FOR JUNE 2018 (FORECAST BASIN RR FROM CLIMPS-CAD)
