humboldt bay sea level rise adaptation planning project: a state and local collaboration
DESCRIPTION
HUMBOLDT BAY SEA LEVEL RISE ADAPTATION PLANNING PROJECT: A State and Local Collaboration. Aldaron Laird Sea Level Rise Planner. HUMBOLDT BAY Shoreline Inventory, Mapping, and Sea Level Rise Vulnerability Assessment. Tuluwat Wiyot World Renewal Site, 2010, 1’ sea level rise. - PowerPoint PPT PresentationTRANSCRIPT
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HUMBOLDT BAY SEA LEVEL RISEADAPTATION PLANNING PROJECT:
A State and Local Collaboration
Aldaron LairdSea Level Rise Planner
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HUMBOLDT BAYShoreline Inventory, Mapping,
and Sea Level Rise Vulnerability Assessment
Tuluwat Wiyot World Renewal Site, 2010, 1’ sea level rise
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Shoreline Type•Artificial=75%, 77 miles• Natural=25%, 26 miles
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Shoreline Structure•Dike = 53%, 41 miles•Railroad = 14 %, 11 miles
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Shoreline Cover•Exposed = 9 miles•Vegetated = 65 miles•Fortified = 27 miles
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King High Tide and Storm SurgeNew Years Eve 2005
Arcata Bay
1.7’ sea level rise, 2005
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Diked Shoreline2.0’ SLR vs. 3.0’ SLR
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7.74' 8.74' 9.74' 10.74' 13.74'
0.8 3.3
11.4
23.4
38.4
Diked Shoreline Overtopping(miles)
Sea Level Rise0’, 1’, 2’, 3’, & 6’
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3.0’ Sea Level Rise
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Purpose:Support informed decision-making and encourage a unified, consistent regional adaptation strategy to address the hazards associated with sea level rise in the Humboldt Bay region.
Partners:Humboldt CountyCities of Eureka and ArcataHumboldt Bay Harbor District North District Coastal Commission
HUMBOLDT BAY SEA LEVEL RISE ADAPTATION PLANNING PROJECT
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WHY COLLABORATE
Coastal Hazards and Sea Level Rise Do Not Recognize Political Boundaries
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Basic Adaptation Planning Strategy
We Cannot Manage or Protect the ShorelineParcel by Parcel, We Need to Address Entire Hydrologic Units
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WHY COLLABORATE
• Sea Level Rise Adaption Planning Will Require Integration of Coastal Commission Development Permit and Local Coastal Program: Policies and Standards.
• Complimentary and Overlapping Jurisdictions.
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Mosaic of Permitting and Planning Jurisdictions
Coastal Commission: Retained and FederalHumboldt CountyCity of EurekaCity of Arcata
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Affected Planning AreasCoastal Hazards vs. Sea Level Rise
3.0 meters 6.0 meters2.0 meters
Tsunami & Flood Zones 6 foot Inundation
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Sea Level RiseAdaptation Planning Process
PREPAREVULNERABILITYASSESSMENT
DEVELOPADAPTAT
IONSTRATEGI
ES
IMPLEMENT
STRATEGIES
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SCOPE
AssemblePlanning Group
Identify Climate ChangeExposures
Adopt Adaptation Planning Process
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Coastal Commission Strategic Plan Climate Change Goal & Objective
• Address Climate Change through LCP Planning, Coastal Permitting, Inter-Agency Collaboration, and Public Education
• Develop Planning and Permitting Policy Guidance [Document] for Addressing the Effects of Climate Change on Coastal Resources
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Coastal Planning & Permitting
• Planning: Land Use Policies & Standards– Local Coastal Programs : County & Cities
• Permitting: Regulatory Policies & Standards– Retained Jurisdiction Areas: Commission-
Chapter 3 Policies; Coastal Development Permit– Federal Lands/Actions: Commission-
Chapter 3 Policies; Consistency Determination– Local Coastal Programs: County & Cities-
LCP Policies; Coastal Development Permit
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ADAPTATIONPLANNING STRATEGIES
Managed Retreat
Fortify-Elevate Shoreline
Incorporate Adaptation Plans with Local Coastal Programs
Integrate Adaptation Plans within Hydrologic Units
Integrate Adaptation Plan with Local Hazard Mitigation Plans