Final Guam Discovery Report - Pages - FEMA Region 9 ... Guam Discovery Report.pdf · 3 II....

Discovery Report Guam Watershed, HUC8 30010000 Island of Guam Report Number 01 08/17/2012

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Table of Contents

I. General Information ............................................................................................. 1 II. Watershed Stakeholder Coordination .................................................................. 3 III. Data Analysis ....................................................................................................... 3

A. Data That Can Be Used for Flood Risk Products ................................................ 5 1. Topographic Data ................................................................................................. 5 2. Building Stock ...................................................................................................... 5

B. Other Data and Information ................................................................................. 6 1. Mitigation Plans/Status, Mitigation Projects ....................................................... 6 2. National Flood Insurance Program Mapping Study Needs ................................. 6 3. Socio-Economic Analysis .................................................................................... 6 4. Community Rating System .................................................................................. 6 5. Flood Control Structures ...................................................................................... 7

i. Levees .................................................................................................................. 7 ii. Dams .................................................................................................................... 7

6. SFHA Management/Community Assistance Visits ............................................. 7 7. Regulatory Mapping ............................................................................................ 7 8. Watershed Projects ............................................................................................... 8

i. Ongoing Projects .................................................................................................. 8 ii. Completed Projects .............................................................................................. 8

9. Other Data ............................................................................................................ 9 IV. Discovery Meeting ............................................................................................. 10 V. Findings and Options ......................................................................................... 10 References ............................................................................................................................ 14 Appendix

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I. General Information Within the Federal Emergency Management Agency’s (FEMA) Risk Mapping, Assessment, and Planning (Risk MAP) Program, the Discovery process initiates watershed-wide discussions about increasing resilience to flooding. FEMA partners with local and regional officials during Discovery to gather and validate available flood data as well as discuss flood history, 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 that risk. 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 a comprehensive look at the components and activities that contribute to flood risk. Local participation in this process will increase understanding of flood risk and help identify proactive steps that can be taken to protect communities from loss of life and property damage related to flooding. Through Risk MAP, FEMA can provide information to improve risk 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 risk data that was collected, discuss the community’s flooding history, development plan, flood risk concerns, stormwater and Special Flood Hazard Area (SFHA) management activities, and other daily operations that affect flood risk. The Discovery Meeting for the Island of Guam Watershed was held on June 1, 2012. This report, along with the Discovery Map, summarizes the information gathered as part of the Discovery process for the Island of Guam Watershed (HUC 8 – 30010000).

The Island of Guam is the largest and southernmost island of the Mariana Islands archipelago. Guam is approximately 6,000 miles west of San Francisco; 3,700 miles west-southwest of 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 of approximately 209 square miles, approximately 100 miles of coastline, and is divided into 19 watersheds. Five watersheds lie in the limestone formation of northern Guam and fourteen are in the volcanic rock terrain of southern Guam. These watersheds along with roadways are shown on the Watershed Locator Map.

MERIZOVILLAGE

ASANVILLAGE

SANTA RITAVILLAGE

UMATACVILLAGE

PITIVILLAGE

MONGMONG TOTOMAITE VILLAGE

MANGILAOVILLAGE

SINAJANAVILLAGE

AGANA HEIGHTS(PAASAN) VILLAGE

AGANAVILLAGE

TAMUNINGVILLAGE

UV3A

UV2

UV11

UV17

UV15

UV1

UV3UV34

UV16

UV6

UV4

UV2A

UV12

UV10A

UV7

UV4A

UV5

UV26

UV9

UV32

UV27A

UV28

UV7A

UV27

UV8

UV10

UV29

UV30

UV24

UV41

UV3A

UV14

UV3

UV15

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Talofofo

Apra Pago

Ugum

Inarajan

Malojloj

Agat

Manell

Cetti

Umatac

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GeusToguan

YIGO VILLAGEDEDEDO VILLAGE

YONA VILLAGE

INARAJAN VILLAGE

TALOFOFO VILLAGEAGAT

VILLAGE

BARRIGADA VILLAGE

Agana

0 25,000 50,00012,500 Feet

/WATERSHED LOCATOR-

ISLAND OF GUAM

P h i l i p p i n e S e a

S o u t h P a c i f i c O c e a n

Watershed Locator Map: Island of Guam

Map Symbology_̂ Capital of Guam

Major RoadwaysStreamsWatershed BoundaryVillages

WATERSHED DISCOVERY MAP

NATIONAL FLOODINSURANCE PROGRAMWDMGuam

RELEASE DATE8/17/2012

HUC-8 Code30010000Watershed Affects

COMMUNITIES: ISLAND OF GUAM

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II. Watershed Stakeholder Coordination The project team compiled a stakeholder list for the Island of Guam using online resources. Major stakeholders revised this list before finalization by the project team. A list of the contacts made during this effort is included in the Appendix to this document.

III. Data Analysis A list of the data collected prior to the Discovery meeting, the deliverable or product in which the data are presented, and the source of the data is shown in Table 1 below. This Data Analysis section is further divided into two sections: one section listing the data that can be used for Risk MAP products (regulatory and non-regulatory), and one listing the other data and information that helped the project team form a more holistic understanding of the Island of Guam Watershed.

Table 1: Data Collection for Guam Watershed

Data Types Deliverable/Product Source Community Assistance Visits

Community Fact Sheet Community Information System (CIS)

Community Rating System

Community Fact Sheet FEMA’s “Community Rating System Communities and Their Classes”

Demographics, Industry Community Fact Sheet US Census Bureau, QuickFacts and American FactFinder

Insurance Policies Community Fact Sheet Community Information System

Mitigation Plans Status Community Fact Sheet FEMA Regional Office Mitigation Projects Community Fact Sheet Data.gov: FEMA Hazard

Mitigation Program Summary

Repetitive Loss Community Fact Sheet Community Information System

Zone B, C, and X Claims Community Fact Sheet Community Information System

Letter of Map Change (LOMCs)

Community Fact Sheet Community Information System

Declared Disasters Community Fact Sheet Data.gov: FEMA Disaster Declarations Summary

Hazards Community Fact Sheet Community Information System

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Table 1: Data Collection for Guam Watershed (Continued) Data Types Deliverable/Product Source

Boundaries: Villages, Guam

Discovery Map Geodatabase FEMA Effective DFIRM database (September 28, 2007)

Boundaries: County and State


Boundaries: Watersheds Discovery Map Geodatabase Natural Resources Atlas of Southern Guam; University of Guam’s Water and Environmental Research Institute (WERI)

Effective Flood Zones: Modernized SFHAs


Future or recent highway improvement, bridge, culvert, levee locations

Discovery Map Geodatabase Information based on Final Environmental Impact Statement for Guam and CNMI Military Relocation (June 2010)

Hydrography: Guam Discovery Map Geodatabase FEMA Effective DFIRM database (September 28, 2007)

Mitigation Projects: Recent, ongoing, planned, desired FEMA/OFA/local projects

Discovery Map Geodatabase Developed based on community interview

Recently developed or planned high growth areas

Discovery Map Geodatabase Developed based on community interview & Final Environmental Impact Statement for Guam and CNMI Military Relocation (June 2010)

Stream Gages Discovery Map Geodatabase US Geologic Survey Study Needs: FEMA Discovery Map Geodatabase Coordinated Needs

Management System Study Needs: Recent, ongoing, planned, desired FEMA/OFA/local studies

Discovery Map Geodatabase Developed based on community interview & Final Environmental Impact Statement for Guam and CNMI Military Relocation (June 2010)

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Table 1: Data Collection for Guam Watershed (Continued) Data Types Deliverable/Product Source

Topographic Availability Discovery Map Geodatabase 2007 Joint Airborne LiDAR Bathymetry Technical Center of Expertise (JALBTCX) Topobathy LiDAR: Guam

Transportation: Railroads, Guam

Discovery Map Geodatabase Bureau of Statistics and Plans, Government of Guam

Transportation: Roads, Guam

Discovery Map Geodatabase Bureau of Statistics and Plans, Government of Guam

Historic Sites Discovery Map Geodatabase Bureau of Statistics and Plans, Government of Guam

Contacts Excel Spreadsheet Local websites

A. Data That Can Be Used for Flood Risk Products 1. Topographic Data As shown on the Final Discovery Map, Light Detection and Ranging (LiDAR) data is available for the entire Island of Guam. This 2007 Joint Airborne LiDAR Bathymetry Technical Center of Expertise (JALBTCX) Topobathy LiDAR data were collected using the Compact Hydrographic Airborne Rapid Total Survey (CHARTS) system for the Government of Guam Department of Public Works and the Office of Homeland Security from February 18 through May 20, 2007. This 2007 dataset was collected across the Island of Guam to produce 2-foot contours and bathymetric LiDAR was collected to fill the areas where no data were obtained during previous survey efforts. The accuracy of this data is listed below in Table 2. 2. Building Stock Guam’s current hazard mitigation plan states that no new building stock was added during this update. The building stock referenced by this plan is from the 2008 update and contains approximately 40,000 buildings, both residential and non-residential structures. This data is to be expanded upon in future updates to possibly include building type, age, material and prior hazard damage. Table 2: Topographic Data

Data Type Title Accuracy Topography: LiDAR 2007 JALBTCX Topobathy

LiDAR: Guam Horizontal: +/-3 m Vertical: +/-15 cm

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B. Other Data and Information

1. Mitigation Plans/Status, Mitigation Projects Guam currently has a hazard mitigation plan that was published in 2011. This plan was prepared by URS Group, Inc. and approved by FEMA in April 2011. It describes the planning process for identifying hazards and risk and vulnerabilities associated with those hazards. This plan also identifies and prioritizes mitigation actions and encourages the development of local mitigation projects. One of the prioritized projects that is related to flood risk and is estimated to be completed in the next 2 years is to create a comprehensive inventory of all essential facilities that are at risk from hazards.

2. National Flood Insurance Program Mapping Study Needs Comparing the Letter of Map Change (LOMC) list from FEMA to the LOMC table in the effective Flood Insurance Study (FIS) identifies that there are no all relevant Letters of Map Revision (LOMR) have been incorporated into the effective study. The Coordinated Needs Management Strategy (CNMS) is FEMA’s strategy for coordinating the management of mapping needs using modern geospatial technologies and current policies, requirements, and procedures. CNMS uses existing digital map data to inventory and manage flood map update issues and support Flood Insurance Rate Map (FIRM) revision and production planning activities. Currently, the Island of Guam has no requests identified in CNMS. 3. Socio-Economic Analysis According to the 2010 Census, Guam has a population of 159,358. This is an increase of 2.9% from the 2000 Census. Data and statistics from the 2000 US Census were utilized for this research because the 2010 demographic profile data will not be available until later in 2012. The median age in the watershed is 27.4, with 5.3% of the population over 65 years old. The population of Guam is diverse with people of Native Hawaiian and Other Pacific Islander races making up 49.0%. Asians comprise the second-largest population group at 33.0%, and Caucasians comprise 6.9% of the population. As of 2000, just under 37% of civilians over the age of 16 that desired employment were working, with a median household income of just over $20,000 annually. 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 indicates special outreach strategies are necessary for the residents in Guam.

4. Community Rating System The Community Rating System (CRS) is a voluntary program created under the NFIP to reduce flood damages to insurable property, strengthen and support the insurance aspects of the NFIP, and encourage a comprehensive approach to SFHA management. Currently, Guam is not in the CRS program.

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5. Flood Control Structures

i. Levees There are no levees identified in FEMA’s Mid-Term Levee Inventory (MLI) nor in the USACE National Levee Database (NLD). However, there is a levee identified on FEMA’s FIRM panel 131D. It is an earthen levee along the right overbank of the Namo River and was constructed as part of the USACE Namo River Flood Control Project. This levee lies within a Zone A SFHA and is not accredited by FEMA. ii. Dams

Fena Valley Reservoir was constructed in 1951 by the U.S. Navy to provide a dependable water-supply for Navy personnel and civilians. The total storage capacity of the Fena Valley Reservoir is approximately 7,180 acre-feet. It is located in south-central Guam and is the major source of domestic water supply for southern 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 in length.

There are numerous watershed structures located on the Island of Guam that were built by the Department of Defense both pre and post war. As feasible, these historic sites were located and shown on the Discovery Map.

6. SFHA Management/Community Assistance Visits FEMA’s Community Information System (CIS) is a database that serves as an official record of the NFIP information. This database provides information about SFHA management, 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 the community and assures that the community is adequately enforcing its SFHA management regulations. The findings from this visit indicated minor problems with the Guam’s SFHA floodplain management regulations. However, there were serious problems with community administration and enforcement procedures as well as engineering problems with the Flood Insurance Study maps. As a result of this CAV, Guam took action to improve their NFIP compliance oversights and corrected many past NFIP violations. Guam was taken off probation, which became effective April 6, 1992, on April 6, 2008. 7. Regulatory Mapping The most recent FIRM update for Guam became effective September 28, 2007. According to the FIS, this revision incorporated a hydrology and hydraulic study for the Agana River, modified several transects along the southern coast as part of the revised typhoon analysis, and decreased the effective floodway along the Geus River and Unnamed Streams 1M and 2M.

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8. Watershed Projects

i. Ongoing Projects NOAA Coastal Services Center is currently developing sea level rise and coastal inundation maps for Guam. Once these maps are complete, they will be incorporated into the datasets available through the Center’s Sea Level Rise and Coastal Flooding Impacts Viewer. This Viewer can be accessed through the Digital Coast website (http://www.csc.noaa.gov/digitalcoast/tools/slrviewer/index.html). The sea level rise data, maps and information provided in the viewer should only be used as a screening-level tool and is estimated to be completed in early 2013. The data in these maps do not consider natural processes such as erosion, subsidence, or future construction. The inundation will be shown as it would appear during mean higher high water (MHHW) conditions. The Pacific Marine Environmental Lab (PMEL) modeling results conducted in the comprehensive tsunami hazard assessment for Guam, described below, were used to create tsunami evacuation zones. These are currently in draft format and under review. The final evacuation zones should be available in the near future. ii. Completed Projects

The NOAA Center for Tsunami Research teamed with the Pacific Risk Management ‘Ohana (PRiMO) to conduct a comprehensive tsunami hazard assessment for Guam. For this study, five coastal communities (Tumon Bay, Agana Bay, Pago Bay, Apra Harbor, and Inarajan Bay) on the Island of Guam were analyzed with both moderate (Mw 8.5) and Great Earthquake (Mw > 9.0) scenarios. This hazard assessment was completed in May 2010 and includes earthquake source identification and resulting tsunamis generated that would have the greatest impact on the Island of Guam, its population, and economy. Historically, Guam has been considered to be at relatively low-risk to tsunamis due to the island’s steep topography and lack of significant continental shelf. However, this study suggests that features surrounding Guam do not offer “protection” from tsunamis as originally assumed. Furthermore, the study emphasizes that moderate earthquake scenarios could pose an extreme hazard along localized portions of the Guam coastline.

A Final Environmental Impact Statement (EIS) finalized in July 2010, was prepared for the proposed military buildup that is scheduled to occur through 2020. The buildup program is a result of the United State defense posture in the Pacific region and of an alliance with Japan. The relocation of Marines from Japan is scheduled to occur during the same timeframe as the wharf construction for the Navy transiting nuclear aircraft carriers and Guam’s proposed Army Air and Missile Defense Task Force. These three actions, known as the Guam and the Commonwealth of the Northern Mariana Islands (CNMI) military relocation, are projected to increase Guam’s population by approximately 30,000 individuals.

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This Final EIS evaluates these actions along with the proposed infrastructure changes that will need to occur.

9. Other Data The USGS provided analysis of rainfall and resulting flooding on Guam in a fact sheet titled “Flooding Associated with Typhoon Chata’an, July 5, 2002, Guam.” The southern half of the eye of Typhoon Chata’an moved over the northern portion of the island. Rainfall exceeded 21 inches over mountainous areas of south-central Guam and the extreme rainfall led to flooding in southern Guam. The fact sheet provides rainfall gage data for 12 stations and associated peak flows and stages at 16 USGS streamflow-gaging stations. The typhoon resulted in new peak stage records at many locations (located on a map included in the fact sheet). Previous records are also identified in the fact sheet. In addition, the fact sheet provides flood recurrence interval computations.

The Guam Transportation Stormwater Drainage Manual was created to provide planning and design guidelines for stormwater management facilities for transportation projects on the Island of Guam. The goal of this manual is to mitigate the effects of hydrologic change and water quality degradation that can occur from development. This manual was finalized in August 2010.

Parsons prepared the Draft Storm Water Implementation Plan for the Guam Road Network (GRN) as part of the development of the Transportation Storm Water Drainage Manual 1 (TSDM) and the Storm Water Drainage Master Plan development for the Guam Department of Public Works. The Storm Water Implementation Plan for the GRN (Plan) provides source control and treatment control best management practices (BMPs) to be used for the various GRN projects. This Plan includes a suite of treatment BMPs that can be used throughout the GRN. BMP selection, discussed herein, considers pollutants of concern, right of way constraints, maintainability, existing drainage infrastructure, proximity to wetlands, as well as existing treatment devices. In April 2010, a final report titled “Understanding the Role of Typhoons, Fire, and Climate on the Vegetation Dynamics of Tropical Dry Forests: Looking to the Past to Develop Future Management Solutions” summarized the results of a study that was conducted in the Cocos Lagoon on the southern coast of Guam. One of the collection sites for this study was on the northeast part of the lagoon at the mouth of the Geus River. Results at this site suggest that the layers were likely laid down during typhoon strikes that also resulted in significant rainfall and flooding in the Geus River watershed. Follow up work was proposed to further investigate the impact typhoons, fire and the climate have on the Island of Guam. The Bureau of Reclamation Guam Study Office created a Planning Aid Document for “Potential Water Resources Development” on the Island of Guam in March 1984. This document identifies potential sites for impoundment structures in order to help solve

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Guam’s water resources problems and needs. Public comments on the direction of this study were requested. The CNMI and Guam Stormwater Management Manual, completed in October 2006 by the CNMI Division of Environmental Quality (DEQ) and the Guam Environmental Protection Agency (GEPA), was developed to provide the framework to ensure the effective implementation of stormwater management practices and to provide design guidance on the most effective BMPs for new development both during and post construction in Guam. This manual is divided into two volumes. Volume I provides an overview on local stormwater issues and how to size and design BMPs while Volume II provides more detailed information on how to select and locate BMPs. Guam Soil Erosion and Sediment Control Regulations, originally adopted in 1985, were revised in April 2000. These regulations are again under revision to include stormwater management in order to protect the waters of Guam from the adverse impacts of urban stormwater runoff.

IV. Discovery Meeting A Discovery meeting was held for the Island of Guam Watershed via WebEx on June 1, 2012. Representatives from the Guam Homeland Security/Office of Civil Defense, Guam Bureau of Statistics and Plans (BSP), Guam Department of Land Management (DLM), Guam Environmental Protection Agency (EPA), United States Geological Survey (USGS), National Weather Service (NWS), the United States Department of Agriculture/Natural Resource Conservation Service (USDA/NRCS), the American Red Cross, BakerAECOM, and FEMA Region IX attended the meeting. Sign in sheets and meeting notes from the Discovery Meeting are provided in the Appendix. Draft Discovery Report comments have also been included in the Appendix.

V. Findings and Options The Discovery process has identified several priority restudy needs in the Guam Watershed. These engineering analyses are listed below in Table 3 and, if funded and performed, should be used to update the FIS and FIRM for the Island of Guam. In addition, FEMA’s tool for tracking study accuracy, CNMS, will be updated to reflect these needs. All recommended projects are identified below on the Final Discovery Map.

The following study/project was identified as high priority. An explanation as to why this was ranked as high priority is provided below.

Island of Guam DFIRM Update – In 2007, LiDAR data was collected for the Government of Guam Department of Public Works and the Government of Guam Office of Homeland Security. This data should be used to update the SFHAs for the Island of Guam. The topography that many of these streams were originally mapped on is more than 50 years

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old. Concern has also been expressed by the community that during the digital conversion of the FIRMs some areas were removed from the SFHAs.

The medium priority projects, identified below, provide further explanation for their ranking.

Coastal inundation - NOAA Coastal Services Center is currently developing coastal inundation maps for Guam. These could be incorporated into non-regulatory products once this study is complete. Scheduled completion is 2013. This project could become a high priority project if funding is available. Flood Risk Assessment – A flood risk assessment dataset should be created to include the updated DFIRM results as well as any additional study results conducted. This analysis, at a minimum, should include a loss analysis for new or updated flood study reaches. Once the losses are identified using Hazards-United States (Hazus), a nationally standardized methodology which contains models for estimating potential losses from earthquakes, floods, and hurricanes, the annualized calculations will need to be calculated outside of Hazus unless this software is modified to allow annualized calculations using user supplied data. Any other available data, including locally supplied general building stock (update is currently underway), population data, property tax assessment (Department of Revenue and Taxation is currently reevaluating its property values) or user supplied depth grids (possibly from the coastal inundation study), should be included in this refined loss analysis. Namo River – Namo River is located on the west side of Guam. The USACE constructed a flood control project along this stream in 1981, however, this stream was never modeled as a detailed stream. This stream should be modeled as a detailed study to incorporate the trapezoidal channel on the downstream section and the earthen levee along the right overbank, which was also part of this USACE project. According to the 2011 Guam Hazard Mitigation Plan, five of the 14 repetitive loss properties for the entire island lie within this watershed. It is not certain that these lie along the Namo River however, three of the five lie within a SFHA. Due to the reasons stated above, as well as the fact that the effective study is approximately 30 years old, this project was ranked as a medium priority.

The low priority project identified in the table below is to incorporate the ongoing NOAA/PMEL tsunami inundation modeling into the FIS and FIRMs. This was assigned a low priority due to the lack of information available regarding the project’s schedule.

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Table 3: Recommended Projects Reach Watershed Need Priority

Islandwide Islandwide Update DFIRMs using 2007 JALBTCX Topobathy LiDAR

High

Coastal Inundation Various Coastal inundation mapping

Medium

Flood Risk Assessment Various Refined loss analysis Medium Namo River from Agat Bay upstream approximately 1.3 miles

Agat New detailed riverine study (hydrology and hydraulics)

Medium

NOAA/PMEL tsunami inundation modeling project

Various New tsunami inundation modeling/mapping

Low

As a result of this Discovery project, any one of these projects could be selected for Guam once funding becomes available.

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Yledigao River

Umatac River

Ugum River

Tongan Creek

Toguan River

Togcha River

Togcha River

Tinago River

Tenjo River

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Pigua River

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Pagachao Creek

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MAP SYMBOLOGY

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Discovery Map: Island of Guam

NATIONAL FLOODINSURANCE PROGRAMWDM WATERSHED DISCOVERY MAPGuam

RELEASE DATE8/17/2012

HUC-8 Code30010000Watershed Affects

COMMUNITIES: ISLAND OF GUAM

FLOOD RISK ASSESSMENT DATASETMEDIUM PRIORITY

A flood risk assessment dataset should be created to include updated DFIRM resultsas well as any additional study results collected. Minimally, this dataset should includea loss analysis for new or updated study reaches.

COASTAL INUNDATIONMEDIUM PRIORITY

NOAA Coastal Services Center is currently developing coastalinundation maps for Guam. These should be incorporated intothe DFIRMs once this study is complete. Scheduled completionis early 2013.

*LiDAR coverage is available for the entire Island

ISLAND OF GUAM DFIRM UPDATEHIGH PRIORITY

LiDAR data was collected for the Government of Guam Department of Public Works and the Government of Guam Office of Homeland Security. Since the topography that many of these streams were originally mapped on is more than 50 years old, thisdata should be used to update the SFHAs for the Island of Guam. The communityhas also expressed concern that during the digital conversion of the FIRMs, someareas were removed from the SFHAs.

NAMO RIVERMEDIUM PRIORITY

The USACE constructed a flood control project alongthis stream in 1981, however, this stream was nevermodeled as a detailed stream. This stream should be modeled as a detailed study to incorporate the trapezoidalchannel on the downstream section and the earthenlevee along the right overbank which was also part of thisUSACE project. Due to the reasons stated above, as well as the fact that the effective study is approximately 30 yearsold, this project was ranked as a medium priority.

Areas of Mitigation InterestCritical Facilities

Fire Stations#

Public Schools#

Hospitals & Clinics#

Police Station#

Flood Data

*from September 28, 2007 FEMA effective DFIRM databaseZone VE

Shaded Zone XZone AZone AEZone AHZone AOZone D

Base Data

USGS Stream GageWatersheds

BridgeCities!(

Major HighwaysRoads

Historic Structures/Sitesh

Fena ValleyReservoir Dam

Dams

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References

Bureau of Reclamation. Planning Aid Document. Potential Water Resources Development Guam. March 1984.

Department of Navy. Final Environmental Impact Statement Guam and CNMI Military Relocation. July 2010.

Donnelly, PhD, Jeffrey P. Understanding the Role of Typhoons, Fire, and Climate on the Vegetation Dynamics of Tropical Dry Forests: Looking to the Past to Develop Future Management Solutions. April 2010.

Federal Emergency Management Agency. Flood Insurance Study, Territory of Guam. September 2007.

Federal Emergency Management Agency. National Flood Insurance Program - Community Information System. Accessed on June 20, 2012

Federal Emergency Management Agency. Disaster Declaration Summary. Available at http://www.fema.gov/datasets/data.gov.FEMADeclarations.xls. Accessed on May 11, 2012.

Guam Department of Public Works. Draft Storm Water Implementation Plan For the Guam Road Network. http://www.coralreef.gov/transportation/guam.pdf. March 2010.

Guam Department of Public Works. Guam Transportation Stormwater Drainage Manual. http://www.guamtransportationprogram.com/docs/2030-plan/storm-water-drainage-manual.pdf. August 2010.

Horsley Witten Group, Inc. CNMI and Guam Stormwater Management Manual. October 2006.

National Oceanic Association Agency. Coastal Storms Program. Available at http://www.csc.noaa.gov/csp/projects_pacificislands.html. Accessed on June 11, 2012.

U.S. Census Bureau. 2010. State & County QuickFacts. Available at http://2010.census.gov/news/xls/cb11cn179_guam.xls. Accessed on June 12, 2012.

U.S. Census Bureau. 2000. American FactFinder, Available at http://factfinder2.census.gov. Accessed on June 22, 2012.

U.S. Army Corps of Engineers. National Levee Database. Available at http://nld.usace.army.mil/egis/f?p=471:1:3713414905257342. Accessed on June 20, 2012.

Appendix

Region IX Discovery 2011: Guam WatershedFact Sheet: Guam, Island of

CID: 660001 FIS/FIRM: Effective Date: 9/28/2007Level of Study: DetailedLast Community Meeting: 7/20/2006

LOMCs: 19 Last CAV/CAC Date: 4/26/2006

CRS Status

DemographicsPopulation: 159,358 Median Age: 27.4 yearsElderly (65+): 5.3%Native: 49.0%

IndustrialPopulation in labor force: 57,278 Median Income: $20,000Top 5 Industries: Arts, entertainment, recreation, accommodation and food services

Education, health and social servicesRetail TradePublic AdministrationConstruction

Presidentially‐Declared DisastersFlood‐related total: 1Recent flood related: July 2004

Other Hazards: Typhoon, Earthquake, Fire

InsuranceTotal Premiums: $405,749 Variances: 0Total Coverage: $52,078,700 Repetitive Losses: 29Total Policies: 252 BCX Zone Claims: 4A Zone Policies: 193

Mitigation Projects and Other GrantsPending Mitigation Project: Harden Generator Shelters ‐ Department of Corrections

FEMA Funding: 74,000.00$ Local Cost‐Share: ‐$

Pending Mitigation Project: Southern District Tsunami Siren System ‐ Office of Civil Defense

FEMA Funding: 90%Local Cost‐Share: 10%

Pending Mitigation Project: Harden Generator ‐ Mayor's Office

FEMA Funding: 20,000.00$ Local Cost‐Share: ‐$

Mitigation Plans: Guam Hazard Mitigation PlanEffective: April 2011Expires: April 2014

Note: The demographic and industrial statistics provided above (except population) were obtained from the 2000 US Census. This data for the 2010 Census should be available late 2012.

Guam Discovery Contact List

Name Affiliation Address Phone Number Email

Kathleen Dobler Natural Resources Conservation Service - Pacific Island AreaUSDA Natural Resources Conservation Service (NRCS) Pacific Islands Area State Office, P.O. Box 50004, Honolulu, HI 96850 808-541-2600 x 114 [email protected]

Bart Lawrence Natural Resources Conservation Service - Pacific Island Area USDA/NRCS FHB Building, Suite 301, 400 Route 8, Mongmong, Guam 96910 671-300-8576 [email protected] Flores Natural Resources Conservation Service - Pacific Island Area USDA/NRCS FHB Building, Suite 301, 401 Route 8, Mongmong, Guam 96910 671-300-8578 [email protected] Carter NOAA - Pacific Services Center NOAA Pacific Services Center 737 Bishop Street, Suite 1550, Honolulu, HI 96813 808-227-2908 [email protected] Larin NOAA - Pacific Risk Management 'Ohana (PRiMO) NOAA Pacific Services Center 737 Bishop Street, Suite 1550, Honolulu, HI 96813 808-532-3973 [email protected] Reder NOAA - Pacific Services Center NOAA Pacific Services Center 737 Bishop Street, Suite 1550, Honolulu, HI 96813 808-525-3769 [email protected] Reynolds NOAA - Pacific Risk Management 'Ohana (PRiMO) NOAA Pacific Services Center 737 Bishop Street, Suite 1550, Honolulu, HI 96813 808-532-3962 [email protected] Yoshimoto USACE Honolulu District Bldg 230, Fort Shafter, HI 96858-5440 808-438-7009 [email protected] Cox USGS Pacific Southwest Area Modoc Hall, USGS, 3020 State University Drive East, Sacramento, CA 95819 916-278-3033 [email protected] Anthony USGS - Pacific Islands Water Science Center 677 Ala Moana Blvd., Suite 415, Honolulu, HI 96813 808-587-2400 x 2426 [email protected] Schneider USGS - National Spatial Data Infrastructure Partnership Office 677 Ala Moana Blvd., Suite 415, Honolulu, HI 96813 503-310-1531 [email protected] Masaki USGS - National Spatial Data Infrastructure Partnership Office 677 Ala Moana Blvd., Suite 415, Honolulu, HI 96813 808-984-3721 [email protected] Mann EPA U.S. EPA, Region 9, P.O. Box 50003, Honolulu, HI 96850 415-972-3505 [email protected] Calvo Guam EPA P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1618 [email protected] Aguilar Guam EPA P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1607 [email protected] Cruz Guam EPA, Water Resources Management Program P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1641 [email protected] Marquez Guam EPA, Water Resources Management Program P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1734 [email protected] Ventura Guam EPA, Water Resources Management Program P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1631 [email protected] Mendiola Guam EPA, Water Resources Management Program P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1618 [email protected] Quezon Guam EPA, Water Pollution P.O. Box 22439, GMF Barrigada, Guam 96913 671-475-1601 [email protected] Brown Guam Department of Public Works 542 North Marine Drive, Tamuning, Guam 96913 671-646-3131 [email protected] Guevara Guam Department of Public Works 542 North Marine Drive, Tamuning, Guam 96913 671-646-3104 [email protected] Ninete Guam Department of Public Works P.O. Box 22439, GMF Barrigada, Guam 96913 671-646-3134 [email protected] Aguilar Guam Department of Land Management, Planning Division P.O. Box 2950, Hagatna, Guam 96932 671-649-5263 x 300 [email protected] Mafnas Guam Department of Land Management P.O. Box 2950, Hagatna, Guam 96932 671-649-5263 x 600 [email protected] Espia Guam Homeland Security, Office of Civil Defense 221B Chalan Palasyo, Agana Heights, Guam 96910 671-475-9600 [email protected] Leon Guerrero Guam Homeland Security, Office of Civil Defense 221B Chalan Palasyo, Agana Heights, Guam 96910 671-475-9600 [email protected] Carbullido Guam Homeland Security, Office of Civil Defense 221B Chalan Palasyo, Agana Heights, Guam 96910 671-475-9600 [email protected] Artero Guam Homeland Security, Office of Civil Defense 221B Chalan Palasyo, Agana Heights, Guam 96910 671-475-9600 [email protected] McDonald Guam Homeland Security, Office of Civil Defense 221B Chalan Palasyo, Agana Heights, Guam 96910 671-475-9600 [email protected] Torres Guam Bureau of Statistics and Plans P. O. Box 2950, Hagatna, Guam 96910 671-472-4201 [email protected] Baza Calvo Office of the Governor Ricardo J. Bordallo Governor's Complex, Adelup, Guam 96910 671-472-8931Gen Tamura FEMA 546 Bonney Loop, Bldg 520, Fort Shafter, HI 96858-5000 808-851-7917 [email protected] Hornick FEMA 1111 Broadway, Suite 1200, Oakland, CA 94607 510-627-7260 [email protected] Simmons FEMA 1111 Broadway, Suite 1200, Oakland, CA 94607 510-627-7029 [email protected] Hayes FEMA 1111 Broadway, Suite 1200, Oakland, CA 94607 510-627-7211 [email protected]

Sheet 1 of 3

DISCOVERY MEETING

ATTENDANCE SHEET

Island of Guam June 1, 2012

9:00 AM

Name Street Address

City, State, Zip Affiliation Phone Number Email Address

1. James McDonald 221B Chalan Palasyo

Agana Heights, Guam 96910

GHS/OCD ‐ HSA 671‐475‐9600 [email protected]

2. Leo Espia 221B Chalan Palasyo


GHS/OCD – Acting Administrator 671‐475‐9600 [email protected]

3. Pilar Carbullido 221B Chalan Palasyo


GHS/OCD – Chief Planner 671‐475‐9600 [email protected]

4. Kenny Artero 221B Chalan Palasyo


GHS/OCD – Typhoon Program Manager

671‐475‐9600 [email protected]

5. Patrick Leon Guerrero

221B Chalan Palasyo


GHS/OCD – Chief of Operations 671‐475‐9600 [email protected]

6. Chip Guard 3232 Hueneme Rd

Barrigada, Guam 96913

NOAA/NWS 671‐472‐0946 [email protected]

7. Penmer Gulac PO Box 2950

Hagatna, Guam 96932

Dept. of Land Management ‐ Planner

671‐649‐5390x352 [email protected]

8. Paul Santos PO Box 2950

Hagatna, Guam 96932

Dept. of Land Management – Chief of Cadastre


Sheet 2 of 3

9. Thomas Torres PO Box 2950

Hagatna, Guam 96932

Dept. of Land Management – Engineering Tech


10. Dave Peredo Rt 4, Building 285

Hagatna, Guam 96910

American Red Cross – Emergency Services Director


11. Victor Torres PO Box 2950

Hagatna, Guam 96910

Guam Bureau of Statistics and Plans – GIS Manager


12. Ben Reder NOAA Pacific Services Center

737 Bishop Street, Suite 1550

Honolulu, HI 96813

NOAA Pacific Services Center – Geospatial Analyst


13. Dale Cox Modoc Hall, USGS

3020 State University Dr East

Sacramento, CA 95819

USGS Pacific Southwest Area – Regional Hazards Coordinator


14. Derek Masaki 677 Ala Moana Blvd, Ste 415

Honolulu, HI 96813

USGS National Spatial Data Infrastructure Partnership Office


15. Maricar Quezon PO Box 22439

GMF Barrigada, Guam 96913

Guam EPA ‐ Engineer 671‐475‐1601 [email protected]

16. Ron Rickman USGS, Pacific Islands Water Science Center

677 Ala Moana Blvd, Ste 415

Honolulu, HI 96813

Data Section Chief 808‐587‐2407 [email protected]

17. Bart Lawrence FHB Building, Suite 301

400 Route 8

Mongmong, Guam 96910

USDA – NRCS Assistant Director for Field Operations, West Area


Sheet 3 of 3

18. Eric Simmons 1111 Broadway, Suite 1200

Oakland, CA 94607

FEMA 510‐627‐7029 [email protected]

19. Gen Tamura 546 Bonney Loop, Bldg 520

Fort Shafter, HI 96858‐5000


20. Michael Hornick 1111 Broadway Suite 1200

Oakland, CA 94607


21. Stephanie Thompson

400 West 15th St, Suite 500

Austin, Texas 78701

BakerAECOM ‐ GIS Analyst 512‐457‐7865 [email protected]

22. April Smith 400 West 15th St, Suite 500

Austin, Texas 78701

BakerAECOM ‐ Project Engineer 512‐457‐7818 [email protected]

PRIVACY ACT STATEMENT (5 U.S.C. 552(a) Privacy Act) a. AUTHORITY: 5 U.S.C. 301 Departmental Regulations;14 U.S.C.2; 14 U.S.C.5 (88); National Environmental Protection Act (NEPA), 42 U.S.C. 4321; 44U.S.C.3101 b. PURPOSE: To obtain personal Information for the purpose of compiling mailing lists and to document public comments as required by the NEPA. NEPA requires public involvement in

agency decision‐making processes. Decisional documents as well as comment mechanisms must be made available to the public. c. ROUTINE USES: To the Department of Homeland Security, U. S. Coast Guard, President of the Council on Environmental Quality, Environmental Protection Agency, and other authorized

federal, state, or local governments who are authorized to develop and enforce environmental standards. d. DISCLOSURE: Disclosure of your name, street address, or other contact information is voluntary; however, if information is not provided, we may not be able to provide copies of

decisional documents and to retrieve additional comments related to environmental impact actions or decisions

Discovery Meeting Notes

1. Introductions Eric Simmons welcomed everyone to the meeting and introduced the team members. Meeting attendees included Guam Homeland Security/Office of Civil Defense, Guam Bureau of Statistics and Plans (BSP), Guam Department of Land Management (DLM), Guam EPA, United States Geological Survey (USGS), National Weather Service (NWS), the United States Department of Agriculture/Natural Resource Conservation Service (USDA/NRCS), the American Red Cross, and representatives from the Federal Emergency Management Agency (FEMA). A sign‐in sheet is provided as an attachment to these notes.

2. Meeting Goals and Objectives The June 1st Discovery Meeting is an important step in the Discovery process under FEMA’s Risk Mapping Assessment and Planning (RiskMAP) program. The goal of Discovery is for FEMA to work closely with local officials to better understand flood risk in order to prioritize possible projects identify areas at risk for flood loss. Eric Simmons summarized the objectives of the meeting. These included:

1. Introduce the National Flood Insurance Program (NFIP) and the Risk MAP Program 2. Start a dialogue about the Island of Guam’s flood risk 3. Communicate available resources 4. Offer partnerships and answer questions 5. Present the current status of the Island of Guam’s flood hazards and risk 6. Learn about the Island of Guam’s needs, and prioritize areas needing a flood risk study

3. Risk MAP Program Overview

Eric Simmons described the Risk MAP program, giving details of the Risk MAP vision and the potential benefits of the program. This federal program is intended to assist with and fund mapping and risk projects due to the typical lack of community funds to do so. Risk MAP primarily looks at flooding hazards (from tropical storms, heavy riverine rainfall, etc), but can include other hazard types such as earthquakes or hurricane winds, especially through risk assessment. Risk assessment can be accomplished for typical flooding, earthquake and wind using FEMA’s HAZUS software . This tool is being updated to include tsunami hazards as well. FEMA currently does not evaluate future conditions based on sea level rise nor coastal erosion. Headquarters is currently evaluating the future conditions effort.

4. Flood Risk Assessment Products April Smith discussed Risk MAP products and provided a comparison between regulatory and non‐regulatory products. She touched on the Flood Risk Report, Flood Risk Map, and the Flood Risk Database

Project Name: Island of Guam

Meeting: Discovery Meeting

Date and Time: June 1, 2012 @ 9:00 AM

Place: WebEx Call‐in Number: 1‐866‐203‐6896 Conference Code: 6231479850

which could include the following: Changes Since Last FIRM, Depth and Analysis Grids, Flood Risk Assessments and Areas of Mitigation Interest.

5. Discovery Process Eric Simmons described the Discovery process. He discussed FEMA’s desire to identify the unknown flood hazards and/or identify where flood risk products may be beneficial. If a specific area of concern is mentioned, then specific physical map revisions/areas of concern can be identified for potential projects. It is FEMA’s intent to work collaboratively with key stakeholders to identify Risk MAP projects. For the Island of Guam, we are in the beginning of this Discovery process, and are looking to local stakeholders for a better understanding of local needs. Once these needs are identified, FEMA will evaluate potential projects and document the evaluation results in a Discovery Report and Map.

6. Discuss Flood Risk Data & Discovery Map April Smith identified the 12 major federally declared disasters that have affected the Island of Guam in the past 50 years. Stephanie Thompson continued with the island’s mapping history, and identified geospatial data sources that have been collected to date. April Smith followed up with additional data that has been collected, and talked about areas of concerns. All attendees were asked to mark up their discussion maps to include known problem areas and to send them to FEMA and BakerAECOM so that locations of concern areas can be documented. Any additional information that would be helpful can also be emailed for inclusion. The following additional data and data sources were identified:

• 2007 LiDAR is available from either Vic Torres or from the NOAA Pacific Coast Office • Concern was also expressed that when the 2007 Effective DFIRMs were completed, some areas

were taken out of the special flood hazard areas, and they may need to be reevaluated. • The American Red Cross has helped residents within the last year with flooding and could be a

source to document flooding locations. • NOAA is currently conducting sea level rise modeling. This should be complete by early next

year. • NOAA conducted tsunami inundation mapping through the Marine Environmental Lab. • Local online newspapers could be a good source to document problem areas and local issues

during high rainfall events • The Water and Environmental Research Institute of the Western Pacific (WERI) at the University

of Guam is an excellent source of local studies and data. • USGS stream gages exist, which are funded by WERI. Data on these gages is available on the

USGS website if needed. • Final Environmental Impact Study (EIS) for the Military Buildup Program • The Villages of Piti and Asas were identified as as having critical flooding concerns during a

Wetlands Reserve Program stakeholders’ meeting. Flooding also occurs along the low lying coastal areas which wrap around the southeastern coast to Merizo.

• Guam BSP is going to enter into a project with the USGS to update the GIS river file to meet the National Hydrography Dataset (NHD) standard. This project should be completed May 2013.

• A number of pre‐war/post‐war dams are scattered across the south. WERI should be able to provide more information on these.

• Fena Valley Reservoir structure does have information available. This data can be obtained either through an advanced internet search or through a request to the BSP.

• The Department of Public Works (DPW) recently adopted a storm water management plan which documents drainage structures and similar facilities. BSP is still in the process of obtaining GIS data related to this document.

• There are 8‐10 NRCS emergency watershed structures for mitigation purposes that have been installed over the years, as well as the Talofofo watershed project that was conducted in the 1990s.

• A USGS report on dam sites throughout southern Guam should be available through WERI. • Following typhoons Pongsona and Chata’an, the University of Guam created numerous GIS

watershed datasets that could be useful. • There are two USACE sponsored projects (one along the Namo River and the other somewhere in

the Agat area) that are available from Dan Meyers at Fort Shafter or BSP. • FEMA also has some post disaster damage assessments, including GIS data from Paka, Pongsona

and Chata’an. • FEMA, in partnership with the DLM, conducted a high water mark collection effort following

Pongsona. • A USGS study on the Guam rainfall during Chata’an is available.

7. Mitigation Planning

Risk MAP products could support the new mitigation plan that was approved in April 2011. Hazard mitigation grant programs were briefly discussed. We look forward to receiving any information that is available so that we can identify any needs that would benefit the local communities. All are looking forward to working together to promote mitigation, to be more resilient and to reduce future damage from disasters.

Guam

No. Date Received Commenter Commenter Title Description of Comment Data Submitted Additional Data Required Recommendation Summary Resolution

1 7/15/2012 Bart Lawrence, USDA‐NRCS

Assistant Director ‐ Field Office Operations (Western Pacific)

There are NO NRCS dams or structures on Guam. There are numerous dam’s built by DOD pre‐post war, couple by the Japanese and others of unknown origin.

Submitted Typhoons Fire Climate, 150‐BOR_DamSiteReport, http://www.usace.army.mil/Portals/2/docs/civilworks/annual_report/fy08/POD_fy08b.pdf, and https://catalog.library.colostate.edu:444/search~S5?/dFlood+control+‐‐+Handbooks%2C+manuals%2C+etc./dflood+control+handbooks+manuals+etc/‐3%2C‐1%2C0%2CB/frameset&FF=dflood+control+guam&1%2C1%2C documents

Revise text to accurately describe watershed structures

Revised text regarding DOD structures, incorporated Typhoons Fire Climate and 150‐BOR Dam Site Report documents. The USACE annual report document that was provided strictly looked at annual dollars that had been spent. No project specific details were provided, therefore this report was not incorporated. The other link provided was to the Colorado State Library. This report was listed there but was inaccessible. Document was searched for online but was not found and therefore was not incorporated.

2 8/6/2012 Ben RederGeospatial Analyst ‐ NOAA Pacific Services Center

1) Under the "Watershed Projects" heading, and regarding the NOAA PSC/PMEL tsunami inundation modeling. • The modeling has been completed (May 2010) and thus, is not an ongoing project (The final report is actually referenced in the Discovery report as "The NOAA Center for Tsunami Research teamed with PRiMO to conduct a comprehensive tsunami hazard assessment for Guam.") I think these are actually one and the same documents? I've attached the report so you can let me know if you are talking about something different....FYI We are however, still working with PMEL in doing a similar modeling exercise for Saipan/CNMI.• The PMEL modeling, plus other data, was used to create tsunami evacuation zones, which are currently in draft format and are under review. The final evacuation zones should be available in the near future.

Submitted PMEL_HazAssess.pdf document (corrupt)

Revise text to incorporate comments Revised text regarding the tsunami modeling

2) Regarding the SLR Mapping:• We are working with SOEST at Univ. of Hawaii, and the mapping effort should be completed early fall 2013.• The inundation zones are non‐regulatory and I would imagine...probably should not be included in DFIRMs? Unless Guam has opted to include "non‐regulatory" layers?• The SLR mapping will be included in a viewer (estimated completion = early 2013).• The data in the maps do not consider natural processes such as erosion, subsidence, or future construction. Inundation is shown as it would appear during MHHW• The data, maps, and information provided in the viewer should be used only as a screening‐level tool.

Revise text to incorporate comments

Revised text regarding the sea level rise modeling project.

3 8/10/2012 Maricar QuezonWater Pollution Control Program, Guam EPA

1.) Please include Guam EPA, Guam CNMI Stormwater Management Manual as one of the references or datas. The manual was developed to provide framework to ensure the effective implementation of stormwater management practices and design guidance on the most effective best management practices for new and post development in Guam for better water quality. This was developed October 2006. The Guam EPA is also currently revising the Guam Soil Erosion Control Regulations to include the stormwater management to protect the waters of Guam from the adverse impacts of urban stormwater runoff.

Guam EPA, Guam CNMI Stormwater Management Manual

Update text to incorporate comments

Incorporated GEPA Guam CNMI Stormwater Management Manual

Discovery Project:

Page 1

No. Date Received Commenter Commenter Title Description of Comment Data Submitted Additional Data Required Recommendation Summary Resolution

2.) The map does not reflect secondary road: namely Ylig and Manenggon Rd.

These two roads were added to the map however, not all secondary roads were added due to the scale of the map.

3.) In the attendance sheet during the discovery meeting, please correct Maricar Quezon’s e‐mail address and contact no. into [email protected] with tel. no. 671‐4751601

Update text to incorporate comments Updated attendance sheet.

4 8/13/2012 Vic TorresGIS Manager, Bureau of Statistics and Plans

1) Most especially conducting the high priority project to “Update the DFIRMS Using the 2007 Lidar Data”. The Bureau of Statistics and Plans was the local agency technical lead on the 2007 Guam Lidar Survey project. We have also been encouraging FEMA to conduct such an update.


Confirmed that the report text represented this comment.

2) As for the medium priority project Coastal Inundation project depending upon the results of the coastal inundation study conducted by NOAA this could become a high priority project and may need to occur as soon as possible after the high priority project based on funding availability.


Incorporated text regarding the possibility of this project becoming a high priority project if funding is available.

3) The medium priority project Flood Risk Assessment project may best be conducted when the Department of Revenue and Taxation finishes its triennial real property tax assessment when property values will be re‐evaluated and when the building stock GIS layer may be updated by the conclusion of the project. That project is currently underway.


Incorporated ongoing tax assessment and building stock information

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