Carbon County 2010 Hazard Mitigation Plan Prepared for: Prepared by: Carbon County Office of Planning and Zoning Michael Baker Jr., Inc. 76 Susquehanna Street 1818 Market Street, Suite 3110 Jim Thorpe, Pennsylvania 18229-0210 Philadelphia, Pennsylvania 19130 Approved on: <Month Day, Year> DRAFT – NOT FOR DISTRIBUTION Carbon County 2010 Hazard Mitigation Plan Table of Contents Table of Figures………………………………………………………………...v Table of Tables………………………………………………………………….vi 1. Introduction .............................................................. 1 1.1. Background ................................................................................. 1 1.2. Purpose ....................................................................................... 1 1.3. Scope ........................................................................................... 2 1.4. Authority and Reference ............................................................ 2 2. Community Profile ................................................... 4 2.1. Geography and Environment ..................................................... 4 2.2. Community Facts ........................................................................ 7 2.3. Population and Demographics .................................................. 7 2.4. Land Use and Development ....................................................... 9 2.5. Data Sources and Limitations .................................................. 12 3. Planning Process ................................................... 16 3.1. Process and Participation Summary ....................................... 16 3.2. The Planning Team ................................................................... 19 3.3. Meetings and Documentation .................................................. 20 3.4. Public & Stakeholder Participation .......................................... 21 3.5. Multi-Jurisdictional Planning ................................................... 22 3.6. Existing Planning Mechanisms ................................................ 22 4. Risk Assessment.................................................... 24 4.1. Process Summary ..................................................................... 24 4.2. Hazard Identification ................................................................. 25 4.2.1. Table of Presidential Disaster Declarations .......................................... 25 4.2.2. Summary of Hazards ............................................................................... 26 4.3. Hazard Profiles and Vulnerability Analysis ............................. 29 NATURAL HAZARDS ........................................................................... 29 4.3.1. Drought ..................................................................................................... 29 4.3.1.1. Location and Extent ............................................................................ 29 AUGUST 20, 2010 DRAFT NOT FOR DISTRIBUTION i Carbon County 2010 Hazard Mitigation Plan 4.3.1.2. Range of Magnitude ............................................................................ 31 4.3.1.3. Past Occurrence ................................................................................. 33 4.3.1.4. Future Occurrence .............................................................................. 34 4.3.1.5. Vulnerability Assessment .................................................................... 36 4.3.2. Flood, Flash Flood, Ice Jam .................................................................... 38 4.3.2.1. Location and Extent ............................................................................ 38 4.3.2.2. Range of Magnitude ............................................................................ 41 4.3.2.3. Past Occurrence ................................................................................. 42 4.3.2.4. Future Occurrence .............................................................................. 48 4.3.2.5. Vulnerability Assessment .................................................................... 48 4.3.3. Hurricane, Tropical Storm, Nor’easter ................................................... 51 4.3.3.1. Location and Extent ............................................................................ 51 4.3.3.2. Range of Magnitude ............................................................................ 53 4.3.3.3. Past Occurrence ................................................................................. 54 4.3.3.4. Future Occurrence .............................................................................. 55 4.3.3.5. Vulnerability Assessment .................................................................... 57 4.3.4. Landslide .................................................................................................. 57 4.3.4.1. Location and Extent ............................................................................ 57 4.3.4.2. Range of Magnitude ............................................................................ 60 4.3.4.3. Past Occurrence ................................................................................. 60 4.3.4.4. Future Occurrence .............................................................................. 60 4.3.4.5. Vulnerability Assessment .................................................................... 60 4.3.5. Wildfire ..................................................................................................... 64 4.3.5.1. Location and Extent ............................................................................ 64 4.3.5.2. Range of Magnitude ............................................................................ 64 4.3.5.3. Past Occurrence ................................................................................. 65 4.3.5.4. Future Occurrence .............................................................................. 71 4.3.5.5. Vulnerability Assessment .................................................................... 71 4.3.6. Winter Storm ............................................................................................ 76 4.3.6.1. Location and Extent ............................................................................ 76 4.3.6.2. Range of Magnitude ............................................................................ 76 4.3.6.3. Past Occurrence ................................................................................. 79 4.3.6.4. Future Occurrence .............................................................................. 79 4.3.6.5. Vulnerability Assessment .................................................................... 80 HUMAN-MADE HAZARDS .................................................................... 81 4.3.7. Dam Failure .............................................................................................. 81 4.3.7.1. Location and Extent ............................................................................ 81 4.3.7.2. Range of Magnitude ............................................................................ 81 4.3.7.3. Past Occurrence ................................................................................. 81 4.3.7.4. Future Occurrence .............................................................................. 81 4.3.7.5. Vulnerability Assessment .................................................................... 81 4.3.8. Disorientation .......................................................................................... 81 4.3.8.1. Location and Extent ............................................................................ 81 4.3.8.2. Range of Magnitude ............................................................................ 81 4.3.8.3. Past Occurrence ................................................................................. 83 AUGUST 20, 2010 DRAFT NOT FOR DISTRIBUTION ii Carbon County 2010 Hazard Mitigation Plan 4.3.8.4. Future Occurrence .............................................................................. 84 4.3.8.5. Vulnerability Assessment .................................................................... 84 4.3.9. Nuclear Incidents ..................................................................................... 84 4.3.9.1. Location and Extent ............................................................................ 84 4.3.9.2. Range of Magnitude ............................................................................ 87 4.3.9.3. Past Occurrence ................................................................................. 88 4.3.9.4. Future Occurrence .............................................................................. 88 4.3.9.5. Vulnerability Assessment .................................................................... 89 4.3.10. Transportation Accident ...................................................................... 89 4.3.10.1. Location and Extent ........................................................................... 89 4.3.10.2. Range of Magnitude ........................................................................... 90 4.3.10.3. Past Occurrence ................................................................................ 93 4.3.10.4. Future Occurrence ............................................................................. 94 4.3.10.5. Vulnerability Assessment ................................................................... 94 4.3.11. Utility Interruption ...............................................................................