Number of river, stream, or lake basins ranked as “Intact” or "Sensitive” for water quality indicators increases over time.
Why is this important?
The streams that flow into Puget Sound and local rivers form an integral part of their physical, biological, and chemical integrity. When those streams are inadequately protected, the consequences affect the water quality in the Deschutes, Nisqually, and Chehalis rivers and Puget Sound water quality. Rivers, streams, and lakes also provide important spawning and rearing habitat for a variety of salmon, and habitat for other aquatic species.
Current conditions ranking for river, stream, and lake basins over time. Current conditions is developed as an indicator based on the following five parameters: basin-wide impervious area and forest cover, vegetation cover in stream riparian zone, water quality rating, and benthic monitoring data from mouth of stream.
Two basins rated as “Intact” in 2006 were re-classified as “Sensitive” in 2011, one basin ranked as “Sensitive” in 2006 was re-classified to “Impacted in 2011, and one basin rated as “Very Degraded” in 2006 was re-classified to “Degraded” in 2011.
Thurston County Basins
Thurston County Basins 2011 Current Conditions
View 2011 Basin Conditions Map as a PDF
Data TableBasin Current Conditions Rating, 2006 and 2011
|Measure/ Year||Intact||Sensitive||Impacted||Degraded||Very Degraded|
|Number of Basins|