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Stream Type [Washington (State)--King County]

King County GIS Open Data · 2025 Full Details

Full Details

Title
Stream Type [Washington (State)--King County]
Description
For more information about this layer please see the GIS Data Catalog . Stream Type is a watercourse layer that identifies the regulatory stream type per the County's definitions in the Critical Areas Ordinance. The baseline data for the physical stream location comes from the Coho Intrinsic Potential stream layer, which was based on the county's ‘watercourse' layer circa 2020. The 4 types of stream are: S -Shoreline of the state, F - Fish bearing or has fish habitat, and N - Non-fish bearing, and O- Other. Currently many smaller streams do not have enough data to be classified as a particular stream type without a field survey. If the classification is unknown, the classification is left blank. Shoreline jurisdiction is defined by Washington Department of Ecology and the County's Shoreline Master Plan. Fish observations, fish use based on physical channel measurements, and presumed fish use data come from multiple sources, including King County, WRIA fish distribution maps, Wild Fish Conservancy, and the Statewide Washington Fish Wide Distribution (SWIFD) datasets. Stream type attribution is based on a hierarchical scheme whereby shoreline and fish observations are populated first, followed by F type designations based on physical channel measurements versus documented fish observations and finally, presumed use. The Stream Type field is not fish species specific, but there are separate fields for the species listed on the Endangered Species Act list- Chinook salmon, steelhead trout, and bull trout or dolly varden. These fish species fields are populated based on documented observations, and a blank value does not necessarily indicate that the species would not use the stream reach.
Creator
King County
Publisher
King County GIS Open Data
Temporal Coverage
Last Modified: 2025-07-31
Date Issued
2025-07-31
Rights
Use Constraint: King County data are made available with the understanding that they shall be used exclusively by the obtainer or their authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.
Access Rights
Public
Format
ArcGIS FeatureLayer
Language
English
Date Added
January 09, 2026
Provenance Statement
The metadata for this resource was last retrieved from King County GIS Open Data on 2026-01-08.

Location

Cite and Reference

  • Citation
    King County (2025). Stream Type [Washington (State)--King County]. King County GIS Open Data. (web service)
  • BTAA Geoportal Link

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