State of Texas Hazard Mitigation Plan - Texas Department of Public ...

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Because damaging earthquakes are rare in Texas, it is tempting to ignore them. A moreresponsible approach is to be selective about mitigation efforts, focusing attention on structures orareas where potential hazard is greatest. The argument for earthquake mitigation is analogous tothe argument for having seatbelts and airbags in automobiles-although any one driver is unlikelyto have an accident in any given day or year, over a person's lifetime there is a significant chanceof having a serious accident. Even in West Texas and the Panhandle, at any particular placedamaging earthquakes probably occur only once per century, or less. However, with a little priorplanning it is possible to ensure that their damage is minimal.Earthquake felt intensity - the Modified Mercalli Intensity ScaleMMIIIIIIIIVVVIVIIVIIIIXWhat people feel, or what damage occurs.Not felt except by a very few people underspecial conditions. Detected mostly byinstruments.Felt by a few people, especially those on theupper floors of buildings. Suspended objectsmay swing.Felt noticeably indoors. Standing automobilesmay rock slightly.Felt by many people indoors, by a fewoutdoors. At night, some people are awakened.Dishes, windows, and doors rattle.Felt by nearly everyone. Many people areawakened. Some dishes and windows arebroken. Unstable objects are overturned.Felt by everyone. Many people becomefrightened and run outdoors. Some heavyfurniture is moved. Some plaster falls.Most people are alarmed and run outside.Damage is negligible in buildings of goodconstruction, considerable in buildings of poorconstruction.Damage is slight in specially designedstructures, considerable in ordinary buildings,great in poorly built structures. Heavy furnitureis overturned.Damage is considerable in specially designedbuildings. Buildings shift from theirfoundations and partly collapse. Undergroundpipes are broken.- 89 -
XXIXIISome well-built wooden structures aredestroyed. Most masonry structures aredestroyed. The ground is badly cracked.Considerable landslides occur on steep slopes.Few, if any, masonry structures remainstanding. Rails are bent. Broad fissures appearin the ground.Virtually total destruction. Waves are seen onthe ground surface. Objects are thrown into theair.Figure 12DFelt area and ModifiedMercalli Intensitiesexperienced by Texans fromthe magnitude 6.0 Valentine,Texas, earthquake of 16August, 1931. Dashed linesare county boundaries; smallsquare in south-central Texasindicates region mapped innext figure.- 90 -
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determine if the strategies remaine
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RECORD OF CHANGESCHANGE NUMBER DATE
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Estimated Losses to State Facilitie
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SECTION 5 - COMPREHENSIVE STATE HAZ
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INTRODUCTIONEffective mitigation re
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SECTION 1 - PLANNING PROCESSDocumen
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SECTION 2 - RISK ASSESSMENTGeneralT
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Figure 2-1: Interaction of Seasonal
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Figure 2-3: Average Annual Precipit
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2.2 PHYSIOGRAPHYFour principal phys
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million years old) inland sea. Natu
Page 36 and 37: Sand is also deposited just off sho
Page 38 and 39: POPULATIONThe population of Texas o
Page 42 and 43: The most obvious tool a local entit
Page 44 and 45: Table 2-6: 100-Year Flood AreasZone
Page 46 and 47: TROPICAL STORMS AND HURRICANESHurri
Page 48 and 49: Table 2-10: Saffir-Simpson ScaleCat
Page 50 and 51: HAZARD PROFILE WORKSHEETHazard: Tro
Page 52 and 53: Map 2-2: NOAA Tornado Zones in Texa
Page 54 and 55: The Enhanced Fujita Scale, or EF Sc
Page 56 and 57: DROUGHTDrought is defined as the co
Page 58 and 59: HAZARD PROFILE WORKSHEETHazard: Dro
Page 60 and 61: Table 2-14: Wildfire Occurrences in
Page 62 and 63: Map 2-5: UWI-Areas in South TexasMa
Page 64 and 65: COASTAL EROSION IS A HYDROLOGIC HAZ
Page 66 and 67: environmental damage in the process
Page 68 and 69: Map 1.3: Critical Eroding Areas of
Page 70 and 71: Thirty-nine faults with a cumulativ
Page 72 and 73: Tropical Storms - Tropical storms a
Page 74 and 75: ars. Similar to the swash regime, t
Page 76 and 77: Sector Counties GLO $ at RiskSector
Page 78 and 79: DAM AND LEVEE FAILUREA dam failure
Page 80 and 81: FREQUENCY OF OCCURRENCEHistorically
Page 82 and 83: HAZARD PROFILE WORKSHEETHazard: Dam
Page 84 and 85: - 87 -Figure 12BMap indicating prob
Page 88 and 89: Figure 12E:Felt area and ModifiedMe
Page 90 and 91: Regional Hazard AssessmentNortheast
Page 92 and 93: Events of these magnitudes seldom p
Page 94 and 95: HAZARD PROFILE WORKSHEETHazard: Ear
Page 96 and 97: Texas is a State severely challenge
Page 98 and 99: HAZARD PROFILE WORKSHEETHazard: Exp
Page 100 and 101: Table 2-20: Extreme Heat Occurrence
Page 102 and 103: HAILSTORMMap 2-15: Hail Occurrences
Page 104 and 105: SizeCodeH10IntensityCategoryModifie
Page 106 and 107: LAND SUBSIDENCELand subsidence is d
Page 108 and 109: SEVERE WINTER STORMSevere winter st
Page 110 and 111: Figure 2-4: NOAA Wind Chill ChartSo
Page 112 and 113: ElPasoHudspethCulbersonJeffDavisPre
Page 114 and 115: HAZARD PROFILE WORKSHEETHazard: Sev
Page 116 and 117: Table 2-24: Beaufort Wind ScaleWind
Page 118 and 119: HIGH WINDTexas is subject to damagi
Page 120 and 121: The graphic above is the mixed anal
Page 122 and 123: Assessing Vulnerability and Estimat
Page 124 and 125: damages. A 100-year flood even alon
Page 126 and 127: ALAMO AREA COUNCIL OF GOVERNMENTS (
Page 128 and 129: (h) Gas Pipelines(1) Primary Impact
Page 130 and 131: i. High: 15ii. Significant: 35iii.
Page 132 and 133: (f) Thunderstorms - Potential annua
Page 134 and 135: Average annual insured loss: $2,633
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Please note that due to FEMA reduci
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(n) Wildfires(1) Tarrant County has
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significant events documented the e
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(g) Winter/Ice StormsTarrant County
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damaged or destroyed. There could b
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Sabine River Authority (SRA)This pl
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(1) The likelihood or future probab
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VulnerabilityVery High Risk - Peopl
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transportation of hazardous materia
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Minor: Minor extent is the lower en
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(1) The extent of a disaster would
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(1) The extent of a disaster would
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As mitigation grant applications ar
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So, while development in hazard pro
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sources), placed on a Web site, and
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Dam Failure -Earthquake -Hail -Wint
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Flood -Hurricane -Tornado -Wildfire
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Infrastructure that was determined
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Table 2-29: Flood Loss Estimates to
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Coastal ErosionTotaling the expecte
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EarthquakeWhile the most severe ear
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SECTION 3 - MITIGATION STRATEGYRequ
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only expends the FMA and SRL grant
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HOUSE BILL 1018The 77 th Texas Legi
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ut could be an effective lobbying o
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Figure 1. Boundary of the Coastal M
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Most coastal states use all or most
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The Hazard Mitigation Program serve
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Oil Spill personnel are specificall
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TEXAS WATER DEVELOPMENT BOARD (TWDB
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THE LOWER COLORADO RIVER AUTHORITY
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Commission in the EMC is to provide
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For private landowners, we're worki
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previous Long Term Recovery committ
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insurable property for windstorm an
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The priority ranking was determined
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Houston, Mesquite, and San Antonio.
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Program: Pre-Disaster Mitigation (P
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in federal funds for 10 projects, C
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yards of beach quality sand was pla
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Bolivar Peninsula. The estimated co
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The GIWW also handles 90% of all ga
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and processing of all hazard mitiga
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measures to take by property owners
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Data Shortfall Strategies(a) Local
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Join the Community Rating System in
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REPETITIVE FLOOD CLAIM (RFC) PROGRA
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actions orenforcement such aszoning
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Promote and provideenhanced warning
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SECTION 4 - LOCAL MITIGATION PLANNI
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Local Plan IntegrationSTATE REVIEW
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Up to 7% of HMGP money may be used
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our Financial and Technical Service
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SECTION 5 - COMPREHENSIVE STATE HAZ
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(6) All jurisdictions within the de
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Summary of HMGP, FMA, SRL, RFC and
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documentation as part of the grant
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to the BCA. If there are any discre
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G711 - PUBLIC OFFICIALS MITIGATION
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PartnershipsTEXAS ASSOCIATION OF RE
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See Section 3.C.3.b for information
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SECTION 6 - PLAN MAINTENANCE PROCES
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Monitoring Progress of Mitigation A
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project is then reported on the qua
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Single Audit Act of 1984, Public La
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SECTION 7 - ATTACHMENTSAttachment O
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Aerial View of Klein High School Ca
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The inlet grates (wide black line o
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Jersey Village and Property locatio
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Again, using FEMA’s Benefit-Cost
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the parking lot. Windows failed und
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Attachment 5Attachment 5 includes a
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Attachment 5 (continued)AGENDAState
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Attachment 5 (continued)- 291 -
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IntroductionA major challenge faced
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B. Federally Authorized Programs1.
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w. Section 406 Hazard Mitigation Gr
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ProgramAuthorityFundingSourcePurpos
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ProgramAll HazardsEmergencyOperatio
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SECTION 9 - APPENDICESAppendix AThe
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Four principal physiographic region
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Water Development Board (TWDB, 2007
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Table 2-1: Features of Major River
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statewide data indicates that appro
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Figure 2-4: Repetitive Loss Propert
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In the future, the TWDB will coordi
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cover entire watersheds, major or m
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Effectiveness -Yes. Application pri
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TWDB will coordinate with TDEM and
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FEMA‘s Web Data Exchange database
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SECTION 10 - REFERENCESAlvarez, E.
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