Rapid geomorphic assessment of the Musimusi River in Balingasag Misamis oriental Philippines
Paper Details
Rapid geomorphic assessment of the Musimusi River in Balingasag Misamis oriental Philippines
Abstract
The study was conducted to identify locations of streambank instability to prioritize restoration needs and slow sedimentation rates on the Musimusi River. Relying on rapid geomorphic assessments (RGAs) has been a common practice for determining the priority of stream reaches. In this study, an established RGA called the channel stability index (CSI) was utilized to evaluate multiple sections of the Musimusi and Camuayan rivers. Four (4) stream reaches got a CSI score higher than 20, considered “highly unstable.” These are the streams that reach 6, 10, 11, and 12. The CSI scores for at least one reach at all the sites fell within the higher range of the “moderately stable” classification, as indicated by the fact that the rest had CSI scores ranging from 10 to 20, which is considered “moderately unstable.” This indicates that the four highly unstable reaches are in a state of degradation, evident by the lowering of the channel bed and consequent increase of bank heights, incision without widening, and bank toe material removed, causing an increase in bank angle while those moderately unstable reaches in the Musimusi River. Its main tributary- the Camuayan River, is in a state of aggradation and widening, evidenced by the lowering of the river bed due to deposition and shifting of the channel banks
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Jr. Sansen A. Handag, Frandel Louis S. Dagoc, Wella T. Tatil, Peter D. Suson, Jr. Ruben F. Amparado (2024), Rapid geomorphic assessment of the Musimusi River in Balingasag Misamis oriental Philippines; JBES, V25, N1, July, P176-183
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