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Watersheds

Hydrologic Unit Boundaries - Hydrologic unit boundaries have been compiled for Oregon and Washington and Northern California.  These comply with NRCS/USGS and regional data standards and protocols. A full description of this dataset and downloadable coverages can be found at the Pacific Northwest Hydrography Framework Clearinghouse website. 

Updating the data -  An interim process has been developed for Hydrography Framework Partners to use in order to update the Hydrologic Unit (HU) Boundaries for Oregon and Washington. Check out the Hydro Framework Clearinghouse for details on this issue and more.

To support the coordination of this dataset, we have developed the following web site: http://ims.reo.gov/website/hydrostewards.  A listing of hydrologists may be viewed by clicking on the lightening bolt icon.   You may request to be a data steward and/or change the appropriate steward information by filling out the Hydro Stewardship form (pencil and paper icon). More information about the roles and responsibilities for data stewards may be obtained by clicking on the Stewardship roles and responsibilities document (book icon).

Background Information about the 6th Field project:
Process Paper for Tracking the 6th field boundaries
Strategy For Completing 5th and 6th Field Watersheds.
Regional Hydrologic Unit  Database Standards

Watershed delineation documents and tools:
Download the Toolset used to delineate the concept 6th field boundaries. (ws6tools.zip, 1mb)
Map showing completed concept 6th field boundaries as of June 27, 2001. (542kb, jpg file)
Workshop Zone Map. (67kb, jpg file)
Quick Update on the 6th Level Sub-watershed Workshops.