Impaired Waters and TMDLs in Region 10
On this page:
- Recent actions
- Search for TMDLs and impaired waters
- State impaired waters programs
- State TMDL programs
- Contacts
Recent Actions
- Willamette Basin Mercury TMDL
- Disapproval of Oregon's Revised Willamette Basin Mercury TMDL - November 2019
- Partial approval/partial disapproval of Oregon's 2012 303(d) list - December 2018
- Partial approval/partial disapproval of Deschutes TMDL - June 2018
- Approval of Washington's 2012 303(d) list - July 2016
Search for TMDLs (Total Maximum Daily Loads) and Impaired Waters
Search our Assessment and TMDL Tracking and Implementation System (ATTAINS) for TMDLs and impaired waters in Region 10:
State Impaired Waters Programs
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- Alaska Impaired Waters Program
- Idaho Integrated Report (303d/305b/314)
- Oregon Water Quality Assessment Program
- Washington Water Quality Assessment and 303d List
State TMDL Programs
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