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Coastal Regional Sediment Management Plans

Coastal RSM Plans covering discrete coastal regions of California are critical to the development of CSMWs Sediment Master Plan. Stakeholder input from CSMWs outreach program indicates that significant differences between coastal regions require region-specific strategies to resolve sediment imbalance issues within that region. CSMW has therefore been working with regional partners to complete Coastal RSM Plans for specific portions of the coast, using littoral cells as the minimum planning unit. These regional strategies, once compiled, can then be weaved together to form the fabric of the state-wide approach to sediment management. Regional partners are essential, as they are best situated to develop local consensus on how to address coastal erosion through beneficial reuse of excess sediment, and to maintain a regional focus during implementation of Plan recommendations.

The Coastal RSM Plan program is meant to formulate strategies for RSM policy and guidance that will: restore, preserve and maintain coastal beaches and other critical areas of sediment deficit; sustain recreation and tourism; enhance public safety and access; restore coastal sandy habitats; and identify cost-effective solutions for restoration of areas impacted by excess sediment.

Each Coastal RSM Plan includes:

  • A recommended governance structure best suited to implement recommendations within the Plan;
  • An outreach program to insure participation by most stakeholders and the public;
  • An assessment of physical conditions (erosion, sedimentation, sand transport patterns, etc.) within the Plan boundary;
  • An economic analysis of benefits and costs associated with sediment management within the Plan area;
  • An assessment of the environmental conditions within the Plan area, including sensitive biota and habitats, and;
  • Geospatial data layers of gathered information suitable for inclusion in CSMWs geospatial database and WebMapper.

As of Summer 2013, CSMW and their regional partners have completed four Coastal RSM Plans, using general criteria prepared by CSMW as a starting point. Additional Coastal RSM Plans are under development for five additional segments of the California coastline, and a few more are under consideration if funds and regional partners become available. These coastal segments, CSMWs regional partners and Plan status include:

  • Southern Monterey Bay Littoral Cell (24MB) - The Association of Monterey Bay Area Governments (AMBAG) completed CSMWs first Coastal RSM Plan, extending from Moss Landing south to Point Pinos, in November 2008
  • Santa Barbara Littoral Cell (3.5MB) - Beach Erosion Authority for Clean Oceans and Nourishment (BEACON) completed their Plan, covering Point Conception south to Point Mugu, in January 2009
  • San Diego County (7.4MB) - San Diego Association of Governments (SANDAG) completed their Plan, covering Oceanside south to the Mexico border, in April 2009
  • Orange County (11MB) - The County of Orange, Parks Department completed their Plan, covering the littoral cells within Orange County, in June 2013
  • Eureka Littoral Cell - The Humboldt Bay Harbor Recreation and Conservation District is currently preparing their Plan, covering the area from Trinidad Head south to False Cape
  • San Francisco Littoral Cell - The Association of Bay Area Governments is currently working to develop their Plan, covering the coastline from the Golden Gate Bridge to Pacifica
  • Los Angeles County (18MB) - CSMW is currently working with a consultant to gather data and help assemble the governance structure for the coastal area within LA County. A draft Coastal RSM Plan has been assembled and is currently under review.
  • San Francisco Central Bay –The Bay Conservation and Development Commission (BCDC) is currently developing a Coastal RSM Plan for the central SF Bay to the Golden Gate
  • Santa Cruz Littoral Cell – CSMW is working to partner with the Monterey Bay National Marine Sanctuary to conduct governance and outreach activities for the stretch of coast from Half Moon Bay to Moss Landing, while the physical, economic and environmental elements are being compiled by USACE in-house subject experts.
  • San Luis Obispo County - CSMW is exploring a Coastal RSM Plan for the Morro Bay Littoral Cell and adjacent areas with potential regional partner and stakeholders in San Luis Obispo County.
  • Crescent City/Del Norte County- CSMW is exploring the possibility of preparing a Coastal RSM Plan for the Crescent City Littoral Cell and adjacent areas in Del Norte County.
  • Sonoma County- CSMW is exploring the possibility of preparing a Coastal RSM Plan covering the littoral cells in Sonoma County.