CHAP 1-3 SUPER FINAL.doc - 1 A Proposed Flood Mitigation Plan at Desta Homes Subdivision Atlag Malolos Bulacan A Research Presented to the Faculty of

CHAP 1-3 SUPER FINAL.doc - 1 A Proposed Flood Mitigation...

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1 A Proposed Flood Mitigation Plan at Desta Homes Subdivision, Atlag, Malolos, Bulacan A Research Presented to the Faculty of Undergraduate School Bulacan State University City of Malolos, Bulacan In Partial Fulfillment of the Requirements for the Degree Bachelor of Science in Civil Engineering By: Patricia Bernadette R. Capati Sherry Rose A. Gesim Karen L. Manalo Dorel Jan T. Perlas
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2 CHAPTER I BACKGROUND OF THE STUDY 1.1 INTRODUCTION Flooding is considered to be one of the most common and most destructive natural hazards. It is a natural occurrence where a large quantity of water overflows into an area which is normally dry. It can cause excessive damage to property, loss of livestock, destruction of crops and even loss of human life. Floods are triggered by heavy rainfall, tropical storms, and dam break. Floods usually occur during rainy season where there are numerous amounts of rainfall. As relative sea level increases due to climate change, it no longer takes a strong typhoon to cause flooding. Flooding now occurs with high tides in different areas due to climate-related sea level rise, land subsidence, and the loss of natural barriers. One of the ways people do to minimize flooding is through directing water into an outlet, hence, the drainage system. A drainage system is a system of natural and artificial channel which is designed so that the water flows away quickly and is disposed of in a surface watercourse. It is important to have an efficient drainage system in order to allow water to flow away from the ground as soon as possible in order to prevent flooding. Subdivisions adapt the drainage system with the end goal to manage the flow of water inside or around property and pass on water to an appropriate outlet. The drainage
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3 system of the subdivision shall abide to the natural drainage pattern of the subdivision site and shall drain into appropriate water bodies or public drainage system. Not following the standards for establishing an effective drainage system may result for different problems to arise. According to “ The United Nations University’s Institute for Environment and Human Security”, Philippines ranks third on the 2017 World Risk Report, which indicates " the risk of disaster in consequence of extreme natural events" in 171 countries around the world. The World Risk Index (WRI) measure each country’s exposure or risk of being struck by natural disasters like hurricanes, earthquakes, flooding, drought, and rising sea levels. On August 2018, Water Level in Ipo and Bustos Dams in Bulacan has reached spilling level, prompting authorities to open gates. Over the weekend, the water level at Ipo Dam reached 101.13 meters, higher by .13 meter than its spilling level of 101 meters while the water level at Bustos Dam hit 17.52 meters, a .02-meter more than its spilling level of 17.50 meters. The Bulacan Provincial Disaster Risk Reduction and Management Office (PDRRMO) said Ipo Dam opened its radial gate 1 while Bustos Dam opened 1 and 2 sluice gates on Saturday. As of Monday morning (August 13), the radial gate of
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  • Hydrology, Bulacan

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