2010 Metro Mitigation Plan

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Harpeth River - Newsom Station Road at Highway 70 – flooding at bridge crossing; - Old Harding Pike – from Harpeth River Bridge to Poplar Creek Road; and - Coley-Davis Road – barricading only required occasionally. McCrory Creek - Elm Hill Pike - near Interstate 40 bridge. This is also adjacent to an identified repetitive loss area along McCrory Creek. The MWS Stormwater Division Maintenance Staff members are responsible for placing the temporary barricades at the locations described above. This duty is not currently tied to specific flood heights, only to subjective determinations during rainfall events. Homeowner Direct Mailings. MWS distributes a notice to all properties located within the 100-year floodplain, which affects approximately 10,000 residents. The annual notice clearly explains that the recipient’s property is subject to flooding and includes a phrase such as “your property is in or near the floodplain.” The pamphlet presents a map of the specific residence and floodplain. The pamphlet also includes information on elevation certificates and narrative information concerning covering such topics as flood safety, flood insurance, property protection measures, floodplain development permit requirements, cumulative substantial improvement policy, drainage system maintenance, natural and beneficial functions of the floodplain, and illicit discharges. Metropolitan Nashville-Davidson County Capability Assessment Multi-Hazard Mitigation Plan Page 4-102 April 2010
Multi-Hazard Mitigation Plan 5.0 Mitigation Strategy This Multi-Hazard Mitigation Plan was originally created in 2005. In 2009, the CPT reviewed and agreed to continue to adopt the original goals and objectives as noted in this section The Community Planning Team (CPT) reviewed and discussed the process of formulating mitigation goals. Each CPT member was provided with a written explanation of Goals and Objectives, the purposes they serve, and how they are developed and written. Up to this point in the planning process, the CPT has been involved in talking to agencies and organizations and collecting and recording hazard related data. From these discussions and efforts, the CPT completed all three components of the Risk Assessment: 1. Hazard Identification; 2. Vulnerability Assessment; and 3. Capability Assessment. The first two components have painted a picture of Metro’s vulnerability to natural hazards. The CPT learned that: 1. Stream system and neighborhood flooding continues to be a significant threat to the community; 2. Geological hazards including landslides and sinkholes are a moderate threat; 3. Earthquakes pose a potential threat; and 4. Most meteorological and natural biological hazards occur periodically: drought, extreme temperatures, infestations, severe thunderstorms/high wind, tornadoes, and severe winter storms. The third component, Capability Assessment, described the current ability of Metro to counter the identified threats through existing policies, regulations, programs, and procedures. Here, the CPT learned that: 1. Flood insurance is available, although only 3,733 policies are in effect, representing 37 percent of the 10,000 building footprints located within the floodplain; 2. Metro has an existing Floodplain Management Plan for Repetitive Loss Areas; 3. The stormwater regulations were recently updated to clarify and strengthen existing policies. Metropolitan Nashville - Davidson County Mitigation Strategy Multi-Hazard Mitigation Plan Page 5-1 April 2010
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Metropolitan Nashville-Davidson Cou
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4.2 Vulnerability Assessment ......
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LIST OF FIGURES Figure 2-1 Metropol
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USDA USGA WCT WNV United States Dep
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Metropolitan Nashville-Davidson Cou
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equired revision every 5 years. The
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Figure 2-1. Metropolitan Nashville-
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Subarea 1 - Joelton Joelton is loca
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Nashville, coupled with the concent
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Interstate 24 and Briley Parkway; t
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(This page has been left blank inte
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Figure 3-1. Similarity Between DMA
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Step 2: Involve the Public In addit
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Step 5: Assess the Problem Once the
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Table 4-1. Federal Disaster Declara
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Figure 4-2. Dams and Levees within
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management. Total storage capacity
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infrequent occurrence. There has ne
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Likelihood of Future Occurrences Th
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WATERSHED Table 4-3. Major Sources
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All streams within Metro Nashville,
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Nashville entered the flood insuran
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Damage Reach 1 Damage Reach 2 Damag
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Dry Creek Watershed The Dry Creek W
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performed. Primarily a rural portio
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Table 4-13. Pages Branch Damage Rea
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Table 4-14. Richland Creek Damage R
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2.96. Damage Reach 12 is located on
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Cumberland River The Cumberland Riv
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The Southern Appalachian Seismic Zo
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40g 30g 25g 20g 15g 10g 9g 8g 7g 6g
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Figure 4-10. Evidence of Landslides
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Page 84 and 85: Figure 4.13 Karst Hazard Map of Ten
Page 86 and 87: Human cases have been reported in a
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Page 90 and 91: The PDSI indicates that for the per
Page 94 and 95: Figure 4-18. Tennessee Forestry Dis
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Page 100 and 101: Figure 4-21. Average Number of Thun
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Page 104 and 105: Past Occurrences Several severe tor
Page 106 and 107: Past Occurrences There have been 16
Page 108 and 109: Critical Facilities Of significant
Page 110 and 111: Scientific Name Common Name Federal
Page 112 and 113: Historic and Natural Resources are
Page 114 and 115: West Nile Virus is spread through m
Page 116 and 117: DAM & LEVEE FAILURES Risk - Moderat
Page 118 and 119: WNQM AM 1300; WUPX UPN 30; WVOL AM
Page 120 and 121: Table 4-31. Earthquake Hazard Damag
Page 124 and 125: Figure 4-25 Tornado Siren Locations
Page 128 and 129: Table 4-33. Metropolitan Nashville-
Page 130 and 131: Evaluation of Existing Capabilities
Page 134 and 135: 4. MWS has prioritized Capital Impr
Page 136 and 137: GOAL #3: Objective 3.1: Objective 3
Page 138 and 139: measures. Team members were allowed
Page 140 and 141: 2009 Update: Since the creation of
Page 142 and 143: Community Benefit: Potential fundin
Page 144 and 145: staff gages were installed in 2009
Page 146 and 147: Existing permit procedures should b
Page 148 and 149: Community Benefit: Life safety, Pot
Page 150 and 151: • Develop public-private partners
Page 152 and 153: 2009 Update: MWS continues to send
Page 154 and 155: Metro officials should talk to thei
Page 158 and 159: COMPLETED ACTION 4: Double the numb
Page 162 and 163: • Construct tornado saferooms and
Page 166 and 167: With the adoption of this plan, the
Page 172 and 173: of the CPT. In addition, technical
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Page 180 and 181: 2. Multi-Hazard Mitigation Plan Sta
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METROPOLITAN GOVERNMENT OF NASHVILL
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Figure A-5 Mass email sent out from
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FLOODING-1 No. Location Historical
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FLOODING-3 No. Location Historical
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EARTHQUAKES-2 No. Date Richter Magn
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INFESTATIONS-1 West Nile Virus Loca
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WILDFIRES-1 No. Location Year Histo
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EXTREME COLD TEMPERATURES-2 No. Loc
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EXTREME HOT TEMPERATURES-1 No. Loca
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THUNDERSTORMS-1 No. Location Histor
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TORNADOES-2 No. Location Historical
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TORNADOES-4 No. Location Historical
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WINTER STORMS-1 No. Location Histor
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Metropolitan Nashville - Davidson C
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MCALPINE AV Cooper Creek DR 3 HART
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Trib. No. 3 GALLATIN PK OLD HICKORY
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HEATH RD BUFFALO RD HUNTWICK TRL HW
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NOLENSVILLE PK Sevenmile Creek DR 1
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Mill Creek Sorghum Branch ANTIOCH P
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HART LN BRICK CHURCH PK I- 65 §¨
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SUMMERLY DR W HILLWOOD DR DARDEN PL
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Stones River STEWARTS FERRY PK reek
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SAUNDERSVILLE RD SHUTE LN ANDREW JA
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Cumberland River RIVER RD RIVER ROA
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Cumberla nd River Browns Creek DR 1
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Metropolitan Nashville - Davidson C
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Metropolitan Nashville Department o
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Reconnaissance Report for Flood Dam
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Extreme Temperatures Chronology of
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2010 Metro Mitigation Plan

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