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Island County > Planning > Shorelines



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New Shoreline Substantial Development Threshold 

The Shoreline Management Act defines “substantial development” as any development in which the fair market value exceeds five thousand dollars. In 2002, the Legislature passed a bill that requires the Office of Financial Management to adjust this dollar threshold, based on inflation, every five years. As of September 2, 2017, State raised the “substantial development” dollar threshold to $7,047.00. 


Training Resources

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DOE Soft Shore Webinar​​

Marine Shoreline Design Guidelines

New SHORELINE MASTER PROGRAM effective 1/19/2016​

      Shoreline Master Program (SMP) as adopted by the Board of County Commissioners  Approved by the Department of Ecology

  1. C-107-05 cover ordinance
  2. Exhibit A
    Goals and Policies
    Shoreline Restoration Plan
  3. Exhibit B
    Figures 1 and 2
  4. Exhibit C - Board's Findings of Fact
  5. Exhibit D - Planning Commission's Findings of Fact
  6. Exhibit E - Shoreline Environmental Designation Map - Appendix to 17.05A ICC
  7. Exhibit F - Map showing change to Shoreline Designation Map required by the Department of Ecology 

New Shoreline Designation Map

 Click here to go to Washington State Department of Ecology Shoreline Master Programs description

The Island County SMP consists of both a policy plan and development regulations that apply to areas within shoreline jurisdiction (200-feet upland of Ordinary High Water Mark including lakes larger than 20-acres in size).       

Shoreline uses are identified as either permitted, conditional, or prohibited uses depending on the shoreline environment designation. This designation is essentially shoreline zoning that is based on an inventory of existing uses. In general, projects within the shoreline jurisdiction are reviewed by staff to ensure compliance with the development standards listed in the SMP chapter 17.05 ICC.  Regulations for development activities within a shoreline jurisdiction are located in ICC 16.21 Shoreline Management.        

For Shoreline permits click here to access the land use permit page

Coastal Atlas (Washington State Dept. of Ecology)

Hydraulic Project Approval - HPA (WDFW)

Ordinary High Water Mark (OHWM)


Island County Marine Resources CommitteeSalmon swimming through eelgrass​​​​​​​​​

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