The National Irrigation Administration (NIA) will release water from the Magat Dam in Isabela on Sunday October 10th in anticipation of heavy rains from Tropical Storm “Maring” (international name “Kompasu”) and the Tropical Depression “Nando” said the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
PAGASA’s hydro-meteorology department received the NIA’s notification of the dam runoff warning on Saturday, October 9, informing the authorities that the Magat Dam was watering from 3:00 p.m. on Sunday is released from the reservoir.
“The height of the reservoir must be lowered in anticipation of the expected strong inflow due to Typhoon Maring and Typhoon Nando,” says the NIA recommendation.
Based on monitoring by PAGASA at 6 a.m. on Saturday, the Magat Dam water level was 188.32 meters, or less than 5 meters, below its 193.0 meter overflow level.
PAGASA said that the catchment area of the Magat Dam is huge, but the reservoir is small, so it fills up quickly when there is heavy rainfall.
In addition, the runoff from the Magat Dam will be regulated to mitigate potential flood damage in the downstream communities.
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