Further information is contained in the reports: "Determination of
Upstream Boundaries on Western Washington Streams and Rivers Under The
Requirements of the Shoreline Management Act of 1971." Water-Resources
Investigations Report 96-4208. USGS-Tacoma. 1998. "Determination of
Upstream Boundaries on Northeastern Washington Streams and Rivers Under
The Requirements of The Shoreline Management Act of 1971."
Water-Resources Investigations Report 98-4160. USGS-Tacoma. 1998.
"Determination of Upstream Boundaries on Southeastern Washington Streams
and Rivers Under The Requirements of The Shoreline Management Act of
1971." Water-Resources Investigations Report 03-4042. USGS-Tacoma. 2003.
Copies of these reports may be purchased from US Geological Survey,
Branch of Information Services, Box 25286, MS 517, Denver, Colorado
80225-0286.