The following TMDLs have been approved by EPA, and appear on the Department's web site:
Umatilla River Basin -- Temperature, pH, Sediment, Turbidity, Aquatic Weeds, and Algae -- May 9, 2001
Or. Admin. Code § 340-041-0314
Stat. Auth.: ORS 468.020, 468B.030, 468B.035 & 468B.048
Stats. Implemented: ORS 468B.030, 468B.035 & 468B.048