Final Guam Discovery Report - FEMA Region 9

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Table of ContentsI. General Information ............................................................................................. 1II. Watershed Stakeholder Coordination .................................................................. 3III. Data Analysis ....................................................................................................... 3A. Data That Can Be Used for Flood Risk Products ................................................ 51. Topographic Data ................................................................................................. 52. Building Stock ...................................................................................................... 5B. Other Data and Information ................................................................................. 61. Mitigation Plans/Status, Mitigation Projects ....................................................... 62. National Flood Insurance Program Mapping Study Needs ................................. 63. Socio-Economic Analysis .................................................................................... 64. Community Rating System .................................................................................. 65. Flood Control Structures ...................................................................................... 7i. Levees .................................................................................................................. 7ii. Dams .................................................................................................................... 76. SFHA Management/Community Assistance Visits ............................................. 77. Regulatory Mapping ............................................................................................ 78. Watershed Projects ............................................................................................... 8i. Ongoing Projects .................................................................................................. 8ii. Completed Projects .............................................................................................. 89. Other Data ............................................................................................................ 9IV. Discovery Meeting ............................................................................................. 10V. Findings and Options ......................................................................................... 10References ............................................................................................................................ 14Appendixi
I. General InformationWithin the Federal Emergency Management Agency’s (FEMA) Risk Mapping, Assessment,and Planning (Risk MAP) Program, the Discovery process initiates watershed-widediscussions about increasing resilience to flooding. FEMA partners with local and regionalofficials during Discovery to gather and validate available flood data as well as discuss floodhistory, areas at risk for flood loss, development plans, adequacy of existing hazard data,mapping needs, community activities that relate to flood risk, and solutions for reducing thatrisk. The goal of Discovery is to determine which areas within a watershed require mapping,risk assessment, or mitigation planning assistance.Because flood hazards change over time, Discovery provides an opportunity to take acomprehensive look at the components and activities that contribute to flood risk. Localparticipation in this process will increase understanding of flood risk and help identifyproactive steps that can be taken to protect communities from loss of life and propertydamage related to flooding. Through Risk MAP, FEMA can provide information to improverisk communication and enhance local mitigation plans, resulting in decreased flood risk.As part of the Discovery process, FEMA holds a Discovery Meeting to review the flood riskdata that was collected, discuss the community’s flooding history, development plan, floodrisk concerns, stormwater and Special Flood Hazard Area (SFHA) management activities,and other daily operations that affect flood risk. The Discovery Meeting for the Island ofGuam Watershed was held on June 1, 2012.This report, along with the Discovery Map, summarizes the information gathered as part ofthe Discovery process for the Island of Guam Watershed (HUC 8 – 30010000).The Island of Guam is the largest and southernmost island of the Mariana Islandsarchipelago. Guam is approximately 6,000 miles west of San Francisco; 3,700 miles westsouthwestof Honolulu; 1,500 miles east of Manila; 2,100 miles southeast of Hong Kong;3,100 miles northwest of Sydney; and 1,500 miles southeast of Tokyo. It has an area ofapproximately 209 square miles, approximately 100 miles of coastline, and is divided into 19watersheds. Five watersheds lie in the limestone formation of northern Guam and fourteenare in the volcanic rock terrain of southern Guam. These watersheds along with roadwaysare shown on the Watershed Locator Map.1
Page 1: Discovery ReportGuam Watershed, HUC
Page 5 and 6: II.Watershed Stakeholder Coordinati
Page 7 and 8: Table 1: Data Collection for Guam W
Page 9 and 10: 5. Flood Control Structuresi. Levee
Page 11 and 12: This Final EIS evaluates these acti
Page 13 and 14: old. Concern has also been expresse
Page 15 and 16: Discovery Map: Island of GuamFLOOD
Page 17 and 18: Appendix
Page 19 and 20: Guam Discovery Contact ListName Aff
Page 22 and 23: 18. Eric Simmons 1111 Broadway, Sui
Page 24 and 25: which could include the following:
Page 26 and 27: Discovery Project: GuamNo. Date Rec

Final Guam Discovery Report - FEMA Region 9

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