The development of a hydrological model for water level forecasting in the Philippines’ deepest lake.

By Arthur M. Amora, Jojene R. Santillan, Meriam M. Santillan

ABSTRACT:

Lake Mainit is considered to be the Philippine’s deepest lake with a maximum depth reaching about 223 m. It is geographically located between the Provinces of Surigao del Norte and Agusan del Norte, in the Island of Mindanao. With a surface area of 149.86 km2, it ranks fourth to Laguna Lake as one of the Philippine’s largest lakes. The lake receives inflows from several major and minor tributaries located in the municipalities of Mainit and Alegria (Surigao del Norte) and Kitcharao and Jabonga (Agusan del Norte). During heavy rainfall events, inflows from these tributaries increase the lake’s water level and causes flooding of barangays located near the shore. This scenario is exemplified recently during the January 2014 Typhoon Agaton. In this paper, we present the development of a hydrologic model of Lake Mainit in order to gain a better understanding of how the various tributaries contribute to the lake’s water level during rainfall events. With the development of this model, the water level in the lake can be simulated or forecasted given the amount of rainfall measured by existing rainfall stations located in the lake’s vicinity.

KEYWORDS: Lake Mainit, reservoir, water level, forecasting, HEC HMS


Publication Details/Metadata:

Paper Title: THE DEVELOPMENT OF A HYDROLOGIC MODEL FOR WATER LEVEL FORECASTING INT THE PHILIPPINES’ DEEPEST LAKE

Authors: Arthur M. Amora, Jojene R. Santillan, Meriam M. Santillan

Publication Date: 2015

Conference Name/Journal/Book Title: 3rd Philippine Geomatics Symposium 2014 (PhilGEOS 2014)

Publisher: Training Center for Applied Geodesy and Photogrammetry, University of the Philippines, Diliman, Quezon City

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