Columbia River - Approved

Snake River - Approved

Lower Columbia-Clatskanie

Middle Columbia-Western Hood

Lower Columbia

Lost

Guano

Umatilla

Silver

Summer Lake

Powder

Burnt

Silvies

Lower John Day

SpragueAlvord Lake

Umpqua

Upper Malheur

Illinois

Coos

McKenzie

Trout

Willow

Williamson

Lower Deschutes

Lower Owyhee

Upper John Day

Coquille Jordan

Lower CrookedAlsea

Bully

Upper Rogue

South Umpqua

Wallowa

Yamhill

Siuslaw

Lake Abert

Nehalem

North Umpqua

Tualatin

Chetco

Sixes

Walla Walla

Warner Lakes

Upper Deschutes

Imnaha

Upper Willamette

Middle Owyhee

North Fork John DayClackamas

Goose Lake

Beaver-South Fork

Applegate

Upper Grande Ronde

Upper Crooked

Upper Klamath

Lower Grande Ronde

South Santiam

Lower Rogue

Upper Quinn

Little DeschutesHarney-Malheur Lakes

Middle Rogue

Lower Malheur

Brownlee Reservoir

Crooked-Rattlesnake

Middle Fork Willamette

Smith

Middle Columbia-Lake Wallula

Molalla-Pudding

North SantiamSiletz-Yaquina

Willow-Malheur

Lower Columbia-SandyWilson-Trask-Nestucca

Donner und Blitzen

Middle Willamette

Middle Fork John Day

Upper Klamath Lake

ButteThousand-Virgin

Coast Fork Willamette

Middle Snake-Succor

Lower Willamette Snake R.-Hells CanyonMiddle Columbia-Miles Creeks

East Little Owyhee

SiltcoosMiddle Snake-Payette

Necanicum Lower Snake-Asotin

Spanish Hollow-Columbia River

South Fork Owyhee

TMDL Development Status for 303(d) Listed Waters

*See TMDL supporting documentation for parameters addressed athttp://www.deq.state.or.us/wq/tmdls/tmdls.htm. Additional 303(d) listingsmay exist for parameters not addressed in approved TMDLs.

Updated June 2012

STATUSEPA Approved*TMDL Report In-Progress (Data analysis & report writing phase)TMDL Initiated (Initial scoping & data collection phase)TMDL Not Started (Minimal or no activity)No TMDL Necessary (No 303(d) listings)

Ü0 20 40 60 8010

Miles