Water Quality Improvement Project
© Candy Redl, newmanlake.com .
Excessive nutrient inputs to lakes provide aquatic plant and algae dominance, making lakes unsuitable for recreation or viewing enjoyment. Phosphorus is one of the nutrients. When it is discharged into a waterbody, like a lake, it fuels the growth of algae.
Excessive algae growth reduces water clarity, increases oxygen demand in the bottom sediments severely impacting coldwater aquatic habitat, and can, depending on the dominant algae present, pose a human health risk.
Ecology submitted the water quality improvement report (WQIR, also known as a total maximum daily load, or TMDL) to EPA in December 2007. EPA approved it in February 2008.
A TMDL advisory committee was formed to provide input on necessary actions to meet the TMDL requirements. The resulting draft Newman Lake TMDL Water Quality Implementation Plan (WQIP) underwent a public review and comment period. The finalized WQIP was sent to EPA in July 2009.
Newman Lake Total Phosphorus Total Maximum Daily Load: Water Quality Improvement Report (Ecology Publication)
Newman Lake Total Phosphorus Total Maximum Daily Load: Water Quality Implementation Plan (Ecology publication)
Watershed Information for WRIA 57 (Environmental Assessment Program web site)
WRIA 57: Middle Spokane
Watershed Information (Environmental Assessment
Program web site)
# of TMDLs: 1
Approved by EPA
Has implementation plan
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.htm