USGS Scientific Investigations Report 2011–5191  - Seepage Investigations of the Clackamas River, Oregon 

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Scientific Investigations Report 2011–5191 

Prepared in cooperation with the Clackamas River Water Providers and Clackamas County Water Environment Services 

Seepage Investigations of the Clackamas River, Oregon 

By Karl K. Lee 

Figures

Figure 1. Location and features of the Clackamas River basin, Oregon and streamflow measurement sites in the upper basin.

Figure 2. Streamflow measurement and withdrawal sites and reaches with streamflow gains or losses in the lower Clackamas River, Oregon, September 2006.

Figure 3. Streamflow in the Clackamas River, Oregon, September 5–8, 2006, and the time spans of manual streamflow measurement for the synoptic seepage study.

Figure 4. Monthly mean streamflow of the Clackamas River at Estacada, Oregon (site 5).

Figure 5. Streamflow gains and losses of the lower Clackamas River, Oregon, based on measurements during August–September 1963–83 and 2001–06.

Figure 6. Streamflow gains and losses of the lower Clackamas River, Oregon, September 2006.

First posted November 28, 2011

Report PDF (2.4 MB)

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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