Note: These amended beneficial use designations, adopted by the Environmental Quality Commission on November 16, 2023, are not applicable for Clean Water Act purposes until approved by the U.S. EPA. For applicable uses prior to EPA approval see “Currently Applicable Beneficial Uses of Oregon's Waters” above.
The designated uses for each basin may be found in OAR 340-041-0101 through OAR 340-041-0340. Each basin has a designated use rule that shows the uses in tables and maps. Links to each basin’s use rule are provided below. Corresponding tables and maps can be downloaded in PDF format by clicking on the link within the rule. One table identifies all the beneficial uses that are designated within the basin. Additional tables and maps identify categories of fish and aquatic life, shellfish harvesting, and contact recreation, which vary by waterbody. The maps also show where estuarine waters end and freshwater begins in coastal basins.
Designated Beneficial Uses Tables and Maps by Basin