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 GEOLOGY OF THE CLACKAMAS WATERSHED

The Clackamas Watershed headwaters are in the volcanically active Cascade Range, as well as the adjacent Sandy Watershed. Along the  Clackamas River is an excellent place to see exposures of the Columbia River Basalt bedrock. 
Watersheds

CLACKAMAS

 COLUMBIA LOWER WILLAMETTE MIDDLE WILLAMETTE SANDY TUALATIN
 

Columbia Slough 

Johnson Creek      
         
       
       
       

       

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The Student Watershed Research Project is a 
self funded program of Portland State University's
Environmental Sciences and Resources
Last updated February 21, 2003

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