The Commission recommends the following six steps to address sea level rise as part of the development of an LCP or LCP Amendment. They are similar to the standard steps of a long-range planning process and should be familiar to local planners. Steps 1-3 are often referred to as “Vulnerability Assessment” in other sea level rise planning contexts and Steps 4-6 are often understood as "Adaptation Planning."
Projects reviewed through a CDP application should address sea level rise in the hazards analysis if locations will be subject to inundation, flooding, wave impacts, erosion, or saltwater intrusion. These steps provide guidance for addressing sea level rise in the project design and permitting process for projects where sea level rise might contribute to or exacerbate hazards or impact coastal resources.
| Time Period * | South of Cape Mendocino | North of Cape Mendocino |
|---|---|---|
| by 2030 | 4 - 30 cm (1.5 - 12 inches) |
-4 - +23 cm (-1.5 - 9 inches) |
| by 2050 | 12 - 61 cm (5 - 24 inches) |
-3 - +48 cm (-1.2 - 19 inches) |
| by 2100 | 42 - 167 cm (17 - 66 inches) |
10 - 143 cm (3.6 - 56 inches) |
* with year 2000 as a baseline
| Time Period * | South of Cape Mendocino | North of Cape Mendocino |
|---|---|---|
| by 2030 | 4 - 30 cm (1.5 - 12 inches) |
-4 - +23 cm (-1.5 - 9 inches) |
| by 2050 | 12 - 61 cm (5 - 24 inches) |
-3 - +48 cm (-1.2 - 19 inches) |
| by 2100 | 42 - 167 cm (17 - 66 inches) |
10 - 143 cm (3.6 - 56 inches) |
* with year 2000 as a baseline
Range of locally relevant SLR projections for planning period
Risks and consequences of SLR impacts to coastal resources and broader community mapped and/or described. Steps 1-3 together often comprise the vulnerability assesment.
ID necessary LCP updates, applicable adaptation measures, new policies/ordinances. Step 4 is often written up as an adaptation plan. It can be a seperate document or a part of a vulnerability analysis document.
Certify/update LCP with policies and land use designations that address SLR and related hazard. Adaptation strategies should be implemented in Land Use Plan (LUP) policies, which then form the basis for more detailed language in the Implementation Plan (IP).
Monitor for SLR and other impacts; revise when conditions change or science is updated
