Why is this important?
Healthy streams, lakes, and groundwater aquifers provide clean drinking water, habitat for aquatic species, and opportunities for swimming and fishing. Protecting healthy — and restoring degraded — watersheds and stream basins will ensure future generations' access to clean water throught the Thurston Region.
TRPC uses three land cover criteria – impervious surface, forest cover, and riparian vegetation – to assess overall basin health. Between 2001 and 2016, 13 of Thurston County's 70 basins saw their condition deteriorate.
- Eight “intact” basins were reclassified as “sensitive” (Waddell Creek, Bloody Run, Salmon Creek, Fall Creek, Porter Creek, Sherman Creek, McIntosh Lake, and Elbow Lake)
- Three “sensitive” basins were reclassified as “impacted” (Skookumchuck, Offut Lake, and Nisqually Reach)
- Two “impacted” basins were reclassified as “degraded” (Mission Creek and Yelm Creek)
For some basins, degradation was due to timber harvests and conditions may improve over time. For others, it was due to development and increasing urbanization.
Two basins saw conditions improve. Capitol Lake was reclassified from “very degraded” to “degraded.” Hanaford Creek was reclassified from “impacted” to “sensitive.”
Overall, local organizations are taking steps to protect and improve the health of local rivers, streams, lakes, and the Puget Sound. It will take a wide range of efforts to accomplish regional goals, including:
- Public outreach and engagement
- Completing and implementing recommendations from basin studies, including those for McLane Creek Basin, Woodland Creek Basin, Black Lake Basin, and the Deschutes River Basin
- Updating stormwater manuals and development codes to encourage low-impact development, including reduction of impervious surfaces and retention of forest cover
- Funding habitat restoration projects identified by local planning groups, such as the WRIA 13 Lead Entity
- Better enforcement of existing regulations