Cumberland County 2010 Hazard Mitigation Plan Update
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Cumberland County 2010 Hazard Mitigation Plan Prepared for: Prepared by: Cumberland County Planning Commission Michael Baker Jr., Inc. County Business Center, Suite 102 1818 Market Street, Suite 3110 18 North Hanover Street Philadelphia, Pennsylvania 19103 Carlisle, Pennsylvania 17013 Approved on: <Month Day, Year> Cumberland County 2010 Hazard Mitigation Plan Cumberland County Hazard Mitigation Plan Certification of Annual Review Meetings The Cumberland County Hazard Mitigation Steering Committee has reviewed this Hazard Mitigation Plan. See Section 8 of the Cumberland County 2010 Hazard Mitigation Plan for further details regarding this form. The director of the Hazard Mitigation Steering Committee hereby certifies the review. DATE OF PUBLIC OUTREACH YEAR SIGNATURE MEETING ADDRESSED?* 2011 2012 2013 2014 2015 *Confirm yes here annually and describe on record of changes page. Cumberland County 2010 Hazard Mitigation Plan Cumberland County Hazard Mitigation Plan Record of Changes DESCRIPTION OF CHANGE MADE, CHANGE MADE BY CHANGE MADE BY DATE MITIGATION ACTION COMPLETED, OR (PRINT NAME) (SIGNATURE) PUBLIC OUTREACH PERFORMED Revisions to the draft plan were made based on comments received from PEMA, FEMA, and Steve Eberbach 6/14/2010 local communities during the approval-pending- Jim Bennett adoption review period between 12/7/2010 and 6/1/2010 (see revisions #1-22). Removed cause information for wildfire events from Table 4.3.9-1. Added additional text for Steve Eberbach 9/2/2010 the structure identified in the levee failure Eric Hoerner hazard profile describing it as insignificant. Documented as revisions #23 and #24. REMINDER: Please attach all associated meeting agendas, sign-in sheets, handouts, and minutes. Cumberland County 2010 Hazard Mitigation Plan Revision Summary Table REVISION REVISION DESCRIPTION NUMBER Mitigation action revisions received from J. Bennett on 12/30/2009. Revisions based on email and 1 follow-up discussion; no actions deleted. 2 Comments received from R. Ihlein on 1/12/2010. 3 Comments received from A. Wrightstone on 1/22/2010. 4 Comments received from A. Weltman on 2/4/2010. 5 Changes made to more clearly define communities responsible for each mitigation action. Mitigation action added which addresses buyout and other property protection measures for RL and 6 SRL properties (see Action 13). 7 General changes made for quality control. 8 Comments received from R. Deppen on 3/29/2010. 9 Text revised in Section 4.2.2 to clarify which hazards were profiled in the 2010 HMP update. 10 Text revised in Section 3.5 to include a summary of participation in the previous 2004 HMP. A mitigation action has been added to re-initiate training and certification of community members in the 11 NOAA NWS Ice Observer Program (see Action 14). Added Kirk Stoner, Cumberland County Director of Planning, as the lead for the HMSC in plan 12 maintenance efforts. 13 A map showing the location of specific wildfire events was added. The nationwide PSDI map was replaced with a PA PSDI probability map which highlights Cumberland 14 County. The "Wind Zones in the United States" (a.k.a. "Design Wind Speed Map for Community Shelters") map 15 was revised to show PA only with Cumberland County highlighted. The "Tornado Activity in the U.S." map was revised to show PA only with Cumberland County 16 highlighted. 17 Reference to the location of dam inundation maps was added to the Dam Failure profile. Discussion of how the NFIP is implemented at the local, state, and federal level was improved in 18 Section 5.2.2. The role of PA DCED in managing the NFIP and availability of the PA model floodplain ordinance is now included. 19 RL and SRL tables have been revised with updated totals and structure type information. 20 Political Capability assessment results added (see Section 5.2.6) 21 Self Assessment results added (see Section 5.2.7) Numerous revisions made based on review comments received from FEMA on 6/1/2010 (see plan 22 review crosswalk included in 6/14/2010 submission). 23 Wildfire cause information removed from previous events (Table 4.3.9-1). 24 Edited text for structure identified in levee failure hazard profile. Cumberland County 2010 Hazard Mitigation Plan Table of Contents 1. Introduction ............................................................. 10 1.1. Background ................................................................................ 10 1.2. Purpose ....................................................................................... 10 1.3. Scope .......................................................................................... 10 1.4. Authority and References ......................................................... 11 2. Community Profile .................................................. 12 2.1. Geography and Environment .................................................... 12 2.2. Community Facts ....................................................................... 12 2.3. Population and Demographics ................................................. 12 2.4. Land Use and Development ...................................................... 14 2.5. Data Sources .............................................................................. 16 3. Planning Process .................................................... 17 3.1. Update Process and Participation Summary .......................... 17 3.2. The Planning Team .................................................................... 20 3.3. Meetings and Documentation ................................................... 21 3.4. Public & Stakeholder Participation .......................................... 22 3.5. Multi-Jurisdictional Planning .................................................... 23 3.6. Existing Planning Mechanisms ................................................ 24 4. Risk Assessment .................................................... 25 4.1. Update Process Summary ........................................................ 25 4.2. Hazard Identification .................................................................. 26 4.2.1. Table of Presidential Disaster Declarations .......................................... 26 4.2.2. Summary of Hazards ............................................................................... 27 4.3. Hazard Profiles ........................................................................... 34 NATURAL HAZARDS ............................................................................ 34 4.3.1. Drought ..................................................................................................... 34 4.3.1.1. Location and Extent ............................................................................ 34 4.3.1.2. Range of Magnitude ............................................................................ 34 4.3.1.3. Past Occurrence ................................................................................. 36 4.3.1.4. Future Occurrence .............................................................................. 37 4.3.1.5. Vulnerability Assessment .................................................................... 39 4.3.2. Earthquake ............................................................................................... 40 5 Cumberland County 2010 Hazard Mitigation Plan 4.3.2.1. Location and Extent ............................................................................ 40 4.3.2.2. Range of Magnitude ............................................................................ 40 4.3.2.3. Past Occurrence ................................................................................. 42 4.3.2.4. Future Occurrence .............................................................................. 44 4.3.2.5. Vulnerability Assessment .................................................................... 44 4.3.3. Flood, Flash Flood & Ice Jam ................................................................. 44 4.3.3.1. Location and Extent ............................................................................ 44 4.3.3.2. Range of Magnitude ............................................................................ 48 4.3.3.3. Past Occurrence ................................................................................. 50 4.3.3.4. Future Occurrence .............................................................................. 55 4.3.3.5. Vulnerability Assessment .................................................................... 55 4.3.4. Hurricane, Tropical Storm, & Nor’easter ............................................... 56 4.3.4.1. Location and Extent ............................................................................ 56 4.3.4.2. Range of Magnitude ............................................................................ 56 4.3.4.3. Past Occurrence ................................................................................. 57 4.3.4.4. Future Occurrence .............................................................................. 58 4.3.4.5. Vulnerability Assessment .................................................................... 60 4.3.5. Landslide .................................................................................................. 60 4.3.5.1. Location and Extent ............................................................................ 60 4.3.5.2. Range of Magnitude ............................................................................ 63 4.3.5.3. Past Occurrence ................................................................................