2010 Metro Mitigation Plan

Recommendations

Info

DAM & LEVEE FAILURES Risk – Moderate; Vulnerability – Moderate Based on Table 4-2 (which is also presented in Section 4.1), the average hazard classification is Significant; however, the larger the dam’s the higher the hazard classification, which would weigh more with the vulnerability. Metro Nashville and Davidson County along with numerous other jurisdictions have completed Wolf Creek Dam Emergency Operation Plans in 2007. This was due to the USACE starting a multi-year repair project due to maintenance problems and increased risk of a dam breach. Table 4-2. Dams affecting Davidson County Dam Hazard Owner / Regulator Name Classification J. Percy Priest Lake USACE High Old Hickory Lake USACE High Chippewa Lake Private Significant Enoree Lake Private Significant Lake Ogallala Private Significant Pal’s Lake Private Significant Marrowbone Lake TWRA High Apple Lake Private High Bush Lake Private Low Cheek Lake Private Low Dupont Retention Basin Private Low Radnor Lake TDEC High South Harpeth Private Low Dams located outside of Davidson County Center Hill USACE High Dale Hollow USACE High Wolf Creek USACE High Great Falls TVA High Metropolitan Nashville - Davidson County Vulnerability Assessment Multi-Hazard Mitigation Plan Page 4-86 April 2010
FLOOD Risk – High; Vulnerability – High Flooding impacts may include urban, residential, and commercial consequences. Buildings can experience significant damage, sometimes beyond repair. Household furnishings and business inventories can be lost if there is not adequate time to remove items to safe locations. Subsequent impacts include revenue loss to employees and businesses, as well as, local governments through tax loss. In addition to being at risk because of floodwater, residents face the threat of explosions and fires caused by leaking gas lines along with the possibility of being electrocuted. Even wild animals, such as venomous snakes, forced out of their homes and brought into contact with humans by floodwaters, can be a threat. Additional public health concerns include mold, West Nile Virus, and encephalitis. Severe flooding can cause extensive damage to public utilities and disruptions to the delivery of services. Loss of power and communications can be expected. Drinking water and wastewater treatment facilities may be temporarily out of operation. Storm and sanitary sewers may also be impacted due to locations in floodprone areas for design purposes, such as gravity flow to minimize pumping charges. Impacts of flooding on transportation are particularly significant. Flooded streets and roads block transportation and make it difficult for emergency vehicles to respond to calls for service. Floodwaters can washout sections of roadway and bridges. This disruption may extend to a regional, even national, scale particularly with regard to access to highways, railroads, and navigable waterways. Most importantly, the majority of fatalities that occur in floods are the result of people trying to dry on roads covered by floodwaters. In order to determine vulnerability, the 100-year floodplain map was overlaid onto the Metro parcel data. The properties that intersected the floodplain were then queried for property improvements greater than $0.00. Improvement values are tied to the parcel data, not to building footprints. This gave an indication of an improvement to a piece of property that touched the floodplain, i.e. count of structures in floodplain. There are approximately 12,040 parcels that intersect the floodplain with an improvement value greater than $0.00. These properties represent approximately six percent of the properties of Metropolitan Nashville and Davidson County (Table 4-30). Twenty-two critical facilities, as defined by the Office of Emergency Management and the Metropolitan Police Department, are located within the floodplain. These facilities include: St. Thomas Hospital; Metro Police Department South Precinct; Omohundro Drive Water Treatment Plant; County Government Complex; Whites Creek High School; Nashville State Technical Institute; Metropolitan Nashville - Davidson County Vulnerability Assessment Multi-Hazard Mitigation Plan Page 4-87 April 2010
Page 1 and 2:
Metropolitan Nashville-Davidson Cou
Page 3 and 4:
4.2 Vulnerability Assessment ......
Page 5 and 6:
LIST OF FIGURES Figure 2-1 Metropol
Page 7 and 8:
USDA USGA WCT WNV United States Dep
Page 9:
Metropolitan Nashville-Davidson Cou
Page 12 and 13:
equired revision every 5 years. The
Page 14 and 15:
Figure 2-1. Metropolitan Nashville-
Page 16 and 17:
Subarea 1 - Joelton Joelton is loca
Page 18 and 19:
Nashville, coupled with the concent
Page 20 and 21:
Interstate 24 and Briley Parkway; t
Page 22 and 23:
(This page has been left blank inte
Page 24 and 25:
Figure 3-1. Similarity Between DMA
Page 26 and 27:
Step 2: Involve the Public In addit
Page 28 and 29:
Step 5: Assess the Problem Once the
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Table 4-1. Federal Disaster Declara
Page 36 and 37:
Page 38 and 39:
Figure 4-2. Dams and Levees within
Page 40 and 41:
management. Total storage capacity
Page 42 and 43:
infrequent occurrence. There has ne
Page 44 and 45:
Likelihood of Future Occurrences Th
Page 46 and 47:
WATERSHED Table 4-3. Major Sources
Page 48 and 49:
All streams within Metro Nashville,
Page 50 and 51:
Nashville entered the flood insuran
Page 52 and 53:
Damage Reach 1 Damage Reach 2 Damag
Page 54 and 55:
Dry Creek Watershed The Dry Creek W
Page 56 and 57:
performed. Primarily a rural portio
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Table 4-13. Pages Branch Damage Rea
Page 64 and 65:
Table 4-14. Richland Creek Damage R
Page 66 and 67: Damage Reach 1 Damage Reach 2 Damag
Page 68 and 69: Damage Reach 1 Damage Reach 2 Damag
Page 70 and 71: 2.96. Damage Reach 12 is located on
Page 72 and 73: Cumberland River The Cumberland Riv
Page 74 and 75: The Southern Appalachian Seismic Zo
Page 76 and 77: 40g 30g 25g 20g 15g 10g 9g 8g 7g 6g
Page 78 and 79: (This page left blank intentionally
Page 80 and 81: Figure 4-10. Evidence of Landslides
Page 82 and 83: Figure 4-11b. Slopes greater than 2
Page 84 and 85: Figure 4.13 Karst Hazard Map of Ten
Page 86 and 87: Human cases have been reported in a
Page 88 and 89: (This page has been left blank inte
Page 90 and 91: The PDSI indicates that for the per
Page 94 and 95: Figure 4-18. Tennessee Forestry Dis
Page 96 and 97: how hot it feels to an individual w
Page 100 and 101: Figure 4-21. Average Number of Thun
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 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 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
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 168 and 169:
Page 170 and 171:
(This page left blank intentionally
Page 172 and 173:
of the CPT. In addition, technical
Page 174 and 175:
PROMULGATION STATMENT Date: TBD To:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
2. Multi-Hazard Mitigation Plan Sta
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
METROPOLITAN GOVERNMENT OF NASHVILL
Page 190 and 191:
Figure A-5 Mass email sent out from
Page 192 and 193:
Page 194 and 195:
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
Page 212 and 213:
Page 214 and 215:
Page 216 and 217:
Page 218 and 219:
Page 220 and 221:
TORNADOES-2 No. Location Historical
Page 222 and 223:
TORNADOES-4 No. Location Historical
Page 224 and 225:
WINTER STORMS-1 No. Location Histor
Page 226 and 227:
Page 228 and 229:
Page 230 and 231:
Metropolitan Nashville - Davidson C
Page 232 and 233:
MCALPINE AV Cooper Creek DR 3 HART
Page 234 and 235:
Trib. No. 3 GALLATIN PK OLD HICKORY
Page 236 and 237:
HEATH RD BUFFALO RD HUNTWICK TRL HW
Page 239 and 240:
NOLENSVILLE PK Sevenmile Creek DR 1
Page 241 and 242:
Mill Creek Sorghum Branch ANTIOCH P
Page 244 and 245:
HART LN BRICK CHURCH PK I- 65 §¨
Page 246 and 247:
SUMMERLY DR W HILLWOOD DR DARDEN PL
Page 248 and 249:
Stones River STEWARTS FERRY PK reek
Page 250 and 251:
SAUNDERSVILLE RD SHUTE LN ANDREW JA
Page 253 and 254:
Cumberland River RIVER RD RIVER ROA
Page 255:
Cumberla nd River Browns Creek DR 1
Page 258 and 259:
Metropolitan Nashville - Davidson C
Page 260 and 261:
Metropolitan Nashville Department o
Page 262 and 263:
Reconnaissance Report for Flood Dam
Page 264:
Extreme Temperatures Chronology of
show all

2010 Metro Mitigation Plan

Create successful ePaper yourself

Delete template?

Save as template?