||Sediment Production Rating, Umpqua Basin, Oregon.
Bullar, W. E. ;
||Public Health Service, Portland, Oreg. Div. of Water Supply and Pollution Control.
( Umpqua River Basin ;
Suspended sediments) ;
( Oregon ;
Water pollution) ;
( Water pollution ;
Umpqua River Basin) ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The sediment production rating is an attempt to assess a major impact of land condition, use, and management in a watershed on the quality of water produced by that watershed. The rating for the Umpqua Basin was done as a part of the Columbia Water Resources Project.