2010 Metro Mitigation Plan

Recommendations

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• Construct tornado saferooms and/or seek vendor donation of one model saferoom. Assessment: The CPT preferred the use of existing fallout shelters, previously constructed due to the historically perceived threat of nuclear attack, to the new construction of tornado saferooms. See Recommended Action Item #19. Assessment: The CPT determined the existing urban forester, currently working within the Metro Codes Department, sufficiently enforces the landscape ordinances at the present time. • Continue development of tree-trimming program to lessen the risk of power outages by falling limbs. • Update vegetation ordinances (i.e., urban forester, landscape ordinances, supplement NES program) Assessment: The CPT the tree-trimming program operated by the Nashville Electric Service adequately served the community. • NES continues development of tree-trimming program to lessen the risk of power outages by falling limbs. FLOODING HAZARD Within Metro Nashville, projects that are required to implement stormwater management practices must provide a detention facility. According to the 1999 Metro Stormwater Management Manual, the release rate from any detention facility should approximate that of the site prior to the proposed development for the 2-year through 10-year storms, with emergency overflow capable of handling at least the 100-year discharge. The CPT discussed the following potential mitigation measures to address stormwater management practices: • The MWS Stormwater Division should review its standards to determine if storm events larger than the 10-year event should be managed in retention basins. Assessment: The CPT did not consider this action item a priority for the Multi-Hazard Mitigation Plan. The action item did not receive any “stars” during the prioritization of preferred measures. The CPT found this action item established an undue regulation on the community, that the probability of storm events larger than the 10-year were not balanced by the life of the structure itself. Upon further discussion, the CPT determined the flooding hazard was sufficiently addressed in the other developed action items. Metropolitan Nashville - Davidson County Mitigation Strategy Multi-Hazard Mitigation Plan Page 5-30 April 2010
Multi-Hazard Mitigation Plan 6.0 Plan Adoption 44 CFR 201.6(c)(5): “{The local hazard mitigation plan shall include} documentation that the plan has been formally adopted by the governing body of the jurisdiction requesting approval of the plan (e.g.,City Council, County Commissioner, Tribal Council).” The Metropolitan Mayor adopts the Multi-Hazard Mitigation Plan by signing a promulgation statement, making it policy for the Metropolitan Government of Nashville and Davidson County. A copy of this statement is in Appendix A. This action will complete Step 9 of the Plan Development Process: Formal Plan Adoption. Metropolitan Nashville - Davidson County Plan Adoption Multi-Hazard Mitigation Plan Page 6-1 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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Figure 4-11b. Slopes greater than 2
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Figure 4.13 Karst Hazard Map of Ten
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Human cases have been reported in a
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The PDSI indicates that for the per
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Figure 4-18. Tennessee Forestry Dis
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how hot it feels to an individual w
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Figure 4-21. Average Number of Thun
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Past Occurrences Several severe tor
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Past Occurrences There have been 16
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Critical Facilities Of significant
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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
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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 132 and 133: Harpeth River - Newsom Station Road
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
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Page 158 and 159: COMPLETED ACTION 4: Double the numb
Page 166 and 167: With the adoption of this plan, the
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Page 174 and 175: PROMULGATION STATMENT Date: TBD To:
Page 180 and 181: 2. Multi-Hazard Mitigation Plan Sta
Page 188 and 189: METROPOLITAN GOVERNMENT OF NASHVILL
Page 190 and 191: Figure A-5 Mass email sent out from
Page 196 and 197: FLOODING-1 No. Location Historical
Page 198 and 199: FLOODING-3 No. Location Historical
Page 200 and 201: EARTHQUAKES-2 No. Date Richter Magn
Page 202 and 203: INFESTATIONS-1 West Nile Virus Loca
Page 204 and 205: WILDFIRES-1 No. Location Year Histo
Page 206 and 207: EXTREME COLD TEMPERATURES-2 No. Loc
Page 208 and 209: EXTREME HOT TEMPERATURES-1 No. Loca
Page 210 and 211: THUNDERSTORMS-1 No. Location Histor
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THUNDERSTORMS-3 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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