Title

Assessment of flood hazards in the municipality of Pulilan, Bulacan

Date of Publication

2017

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Civil Engineering with Spec in Hydraulics and Water Resources Engg

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Thesis Adviser

Renan, Ma. T. Tanhueco

Defense Panel Chair

Mario P. De Leon

Defense Panel Member

Maria M. Redillas

Maria Emilia P. Sevilla

Abstract/Summary

The Philippines experiences flooding regularly. As a way to address flooding in the country, this study modelled the area of Pulilan, a municipality in the province of Bulacan and simulated rainfall of 25 and 50-year return periods. This study incorporates different features present in the area of study such as soil types, elevation, and use as well as other features in its two-dimensional flood inundation models. The study determined the velocity, flow depth, and hazard level exposure of the area being considered. To simulate rainfall and analyze the results of the simulation, various computer programs were used. The main program used for the simulation of rainfall is FLO-2D while the other programs were instrumental in providing the data required in FLO-2D as well as in analyzing the result and in producing the final output. After the simulation, results showed that for the 25-year return period 247,541 out of 277,633 grids or about 89% of the area experienced a flow depth of 0.5 meters or less. The only areas where depth is high are in the northern portion of Apalit and the area near the Angat river. As for the 50-year return period, 86% of the area experienced a flow depth of 0.5 meters or less. For both the return periods majority of the area experienced a flow velocity of less than 0.5m/s. Majority of the area is exposed to a low level of flood hazard.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU21977

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

x, 73 leaves : illustrations (some color) ; 30 cm.

Keywords

Floods--Philippines--Bulacan--Pulilan; Flood forecasting--Philippines --Bulacan--Pulilan

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