00000ctm a22000003i 4500 UP-99796217611984616 Buklod 20230215105418.0 m |o d | ta 160404s xx d r |||| u| (iLib)UPD-00254213191 DENGII rda eng LG 993.5 2014 E63 S475 Serrano, Jonathan S. author. Riverine flood mitigation in Masantol, Pampanga Jonathan S. Serrano ; Imee Bren O. Villalba, adviser. Quezon City College of Engineering, University of the Philippines Diliman 2014. xi, 96 leaves color illustrations 28 cm text rdacontent unmediated rdamedia volume rdacarrier Thesis (B.S. Civil Engineering)--University of the Philippines Diliman April 2014. This study aims to assess the flooding in Masantol, a mlLllicipality in Pampanga, by creating a flood model using LISFLOOD-FP and HEC-RAS. Masantol is located near Manila Bay which is the outlet of the Pampanga River Basin, hence flooding in the place is severe. Using 1OO yr-RIDF data, corresponding RIDF-calibrated flows in Arayat, 30-m DTM, and an estimated Manning's n from land cover maps, a 4-day simulation was run in LISFLOOD. The model covers the floodplain from Arayat up to a diversion from the main channel in Apalit, Pampanga where the results from LISFLOOD remained stable. The outflow hydrograph obtained from the simulation has a peak of 2736.7 cms at the 68th hour. This was then used in HEC-RAS to route the river upto the reaches in Masantol, with Sapang Maragol as a critical reach since it is beside the town proper. Levees were then designed in HEC-RAS at a stage of 4.5 m and maximum water stages were compared for the model with and without levees to see if there is a significant increase in water stages. Results show that levees caused minor increase in upstream areas and only caused signjficant increase in a downstream reach which was far from the town proper. Other cases were also done such as the comparison of 50-yr and 100-yr flood scenarios, not including rainfall in the LISFLOOD model, and inclusion of the Angat River, a main tributary of Pampanga River, in the HEC-RAS model. Hydrologic models. Flood damage prevention Philippines Pampanga. Villalba, Imee Bren O. adviser. Thesis FI UP UPD DENG-II LG 993.5 2014 E63 S475 Thesis