STATUS OF MONITORED MAJOR DAMS - … · 22/03/2018 · DAM RWL (m) NHWL (m) Deviation from NHWL (m)...

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)

PAGASA The Weather and Climate Authority

Payong

PAGASA

HYDROMETEOROLOGY DIVISION hmd.ffws@gmail.com