TMDL image

Water Quality Improvement Projects (TMDLs)

Water resource inventory area (WRIA) 57 map, Washington State.

WRIA 57: Middle Spokane

The following table lists overview information for water quality improvement projects (including total maximum daily loads, or TMDLs) for this water resource inventory area (WRIA). Please use links (where available) for more information on a project.


Waterbody Name Pollutant(s) Status** TMDL Lead
Liberty Lake Total Phosphorus
Total Nitrogen
EPA approved David Knight
Newman Lake Total Phosphorus EPA approved

Has implementation plan

David Knight
Spokane River BOD (5-day) TMDL under development David Knight
Dissolved Oxygen EPA approved
Dissolved Metals EPA approved
Loading study and phosphorus model update  
PCBs Under development as a direct-to-implementation project Adriane Borgias

** Status will be listed as one of the following: Approved by EPA, Under Development or Implementation

For more information about WRIA 57:

* The Department of Ecology and other state resource agencies frequently use a system of 62 "Water Resource Inventory Areas" or "WRIAs" to refer to the state's major watershed basins.

Back to top of page

Last updated June 2013