Shoreline Master Program

King County, Washington


Mapping Lookup Disclaimer

GENERAL DISCLAIMER -- FOR ALL MAPS
The draft information included on this map has been compiled by staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. King County shall not be liable for any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the information contained on this map. Any sale of this map or information on this map is prohibited except by written permission of King County.

In addition to the general disclaimer, see additional disclaimers/info below for each map.

SHORELINE ALTERATIONS ANALYSIS RESULTS and EXAMPLES OF SHORELINE ALTERATIONS ANALYSIS RESULTS
This draft analysis evaluates the degree to which 10 ecological processes along shorelines of the state are altered. Processes evaluated include sediment, large woody debris, wave energy, light energy, nutrients (phosphorus and nitrogen), pathogens, tidal influences, hydrologic cycle and toxins. The overall quality (low to high) of each shoreline reach was determined according to the degree to which these processes were altered. A full description of this analysis and its results can be found in the draft King County Shorelines Technical Appendix and the results for specific shoreline reaches can be viewed with King County's Shoreline Mapping Lookup tool.

SHORELINE JURISDICTION
Shorelines of the State include all marine shorelines, lakes greater than 20 acres, and rivers and streams with 20 cubic feet per second (cfs) mean annual flow or greater. The shoreline jurisdiction includes these water bodies and shorelands. Shorelands are defined as those areas extending landward for two hundred feet from the ordinary high water mark, floodways and contiguous floodplain areas landward two hundred feet from such floodways, and all associated wetlands and river deltas. King County currently includes the zero-rise floodway, essentially the 100-year floodplain, in its shoreline jurisdiction.

The updated map of the shoreline jurisdiction was developed based on State direction to Include all qualifying shorelines on federal lands (these were not previously included) and to use new information from a 1998 US Geological Survey study to identify the location of 20 cubic feet per second flow points on streams (these new points are higher up in the watershed than most current points). Further, lakes were reevaluated in relation to the 20-acre threshold given the availability of new data about lake size.

Data Sources: Existing and proposed jurisdictional areas from King County/DOE (3/06), Shoreline of State Significance from WDOE, (8/01). King County standard datasets used for county boundary ("kingco", 2004), roads ("kcsn", 3/06), (water bodies ("wtrbdy", 8/06), streams ("wtrcrs", 2002), potential annexation areas (3/06), cities ("citymast", 3/06), associated floodplains ("fldplain", 3/06).

SHORELINES OF STATEWIDE SIGNFICANCE
The following water bodies and shoreland areas are currently identified as Shorelines of the Statewide Significance in the King County Shoreline Master Program:

  1. Those areas of Puget Sound and adjacent salt waters and the Strait of Juan de Fuca between the ordinary high water mark and the line of extreme low tide as follows:
    1. Nisqually Delta -- from DeWolf Bight to Tatsolo Point,
    2. Birch Bay -- from Point Whitehorn to Birch Point,
    3. Hood Canal -- from Tala Point to Foulweather Bluff,
    4. Skagit Bay and adjacent area -- from Brown Point to Yokeko Point, and
    5. Padilla Bay -- from March Point to William Point;
  2. Those areas of Puget Sound and the Strait of Juan de Fuca and adjacent salt waters north to the Canadian line and lying seaward from the line of extreme low tide;
  3. Those lakes, whether natural, artificial, or a combination thereof, with a surface acreage of 1,000 acres or more measured at the ordinary high water mark;
  4. Those natural rivers or segments thereof west of the crest of the Cascade range downstream of a point where the mean annual flow is measured at 1,000 cubic feet per second or more;
  5. Those shorelands associated with the water bodies above.

White River Shoreline Jurisdiction and Reach Quality Ratings
The draft shoreline jurisdiction map layer and shoreline reach quality ratings for the White River contain discrepancies that will be corrected in spring 2007 to ensure that they correctly correspond to the southern King County boundary.

Linked River Reaches along Duwamish and Green Rivers
A river reach on the west bank of the Duwamish River and along the Green River mistakenly became linked during our ecological quality analysis. The analysis and ratings for these reaches will be corrected during the next iteration of our analysis.

 

Updated: Jan. 17, 2007