Final Guam Discovery Report - FEMA Region 9

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B. Other Data and Information1. Mitigation Plans/Status, Mitigation ProjectsGuam currently has a hazard mitigation plan that was published in 2011. This plan wasprepared by URS Group, Inc. and approved by FEMA in April 2011. It describes theplanning process for identifying hazards and risk and vulnerabilities associated withthose hazards. This plan also identifies and prioritizes mitigation actions andencourages the development of local mitigation projects. One of the prioritizedprojects that is related to flood risk and is estimated to be completed in the next 2 yearsis to create a comprehensive inventory of all essential facilities that are at risk fromhazards.2. National Flood Insurance Program Mapping Study NeedsComparing the Letter of Map Change (LOMC) list from FEMA to the LOMC table inthe effective Flood Insurance Study (FIS) identifies that there are no all relevant Lettersof Map Revision (LOMR) have been incorporated into the effective study.The Coordinated Needs Management Strategy (CNMS) is FEMA’s strategy forcoordinating the management of mapping needs using modern geospatial technologiesand current policies, requirements, and procedures. CNMS uses existing digital mapdata to inventory and manage flood map update issues and support Flood InsuranceRate Map (FIRM) revision and production planning activities. Currently, the Island ofGuam has no requests identified in CNMS.3. Socio-Economic AnalysisAccording to the 2010 Census, Guam has a population of 159,358. This is an increaseof 2.9% from the 2000 Census. Data and statistics from the 2000 US Census wereutilized for this research because the 2010 demographic profile data will not beavailable until later in 2012. The median age in the watershed is 27.4, with 5.3% of thepopulation over 65 years old. The population of Guam is diverse with people of NativeHawaiian and Other Pacific Islander races making up 49.0%. Asians comprise thesecond-largest population group at 33.0%, and Caucasians comprise 6.9% of thepopulation. As of 2000, just under 37% of civilians over the age of 16 that desiredemployment were working, with a median household income of just over $20,000annually. Residents across Guam worked primarily in arts, entertainment, recreation,accommodation, and food services; education, health and social services; retail trade;public administration; and construction. No specific demographics data indicatesspecial outreach strategies are necessary for the residents in Guam.4. Community Rating SystemThe Community Rating System (CRS) is a voluntary program created under the NFIPto reduce flood damages to insurable property, strengthen and support the insuranceaspects of the NFIP, and encourage a comprehensive approach to SFHA management.Currently, Guam is not in the CRS program.6
5. Flood Control Structuresi. LeveesThere are no levees identified in FEMA’s Mid-Term Levee Inventory (MLI) nor inthe USACE National Levee Database (NLD). However, there is a levee identifiedon FEMA’s FIRM panel 131D. It is an earthen levee along the right overbank ofthe Namo River and was constructed as part of the USACE Namo River FloodControl Project. This levee lies within a Zone A SFHA and is not accredited byFEMA.ii. DamsFena Valley Reservoir was constructed in 1951 by the U.S. Navy to provide adependable water-supply for Navy personnel and civilians. The total storagecapacity of the Fena Valley Reservoir is approximately 7,180 acre-feet. It islocated in south-central Guam and is the major source of domestic water supply forsouthern Guam. The Fena Dam, located in the northwest portion of the reservoir,has a spillway altitude of about 111 feet. It is 85 feet in height, and 1,050 feet inlength.There are numerous watershed structures located on the Island of Guam that werebuilt by the Department of Defense both pre and post war. As feasible, thesehistoric sites were located and shown on the Discovery Map.6. SFHA Management/Community Assistance VisitsFEMA’s Community Information System (CIS) is a database that serves as an officialrecord of the NFIP information. This database provides information about SFHAmanagement, mapping, and insurance for the communities that participate in the NFIP.Data collected from the CIS indicates that the most recent Community Assistance Visit(CAV) occurred on April 26, 2006. A CAV is a visit to the community by FEMA staff,or staff of a State agency on behalf of FEMA that provides technical assistance to thecommunity and assures that the community is adequately enforcing its SFHAmanagement regulations. The findings from this visit indicated minor problems withthe Guam’s SFHA floodplain management regulations. However, there were seriousproblems with community administration and enforcement procedures as well asengineering problems with the Flood Insurance Study maps. As a result of this CAV,Guam took action to improve their NFIP compliance oversights and corrected manypast NFIP violations. Guam was taken off probation, which became effective April 6,1992, on April 6, 2008.7. Regulatory MappingThe most recent FIRM update for Guam became effective September 28, 2007.According to the FIS, this revision incorporated a hydrology and hydraulic study forthe Agana River, modified several transects along the southern coast as part of therevised typhoon analysis, and decreased the effective floodway along the Geus Riverand Unnamed Streams 1M and 2M.7
Page 1 and 2: Discovery ReportGuam Watershed, HUC
Page 3 and 4: I. General InformationWithin the Fe
Page 5 and 6: II.Watershed Stakeholder Coordinati
Page 7: Table 1: Data Collection for Guam W
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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