There are many ways of defining the boundaries of the Puget Sound basin. Hydrologic unit codes (HUCs) are nationally standardized divisions that are often used by conservation agencies and national organizations.
Puget Sound Watershed
- Counties: Island, Jefferson, King, Kitsap, Mason, Pierce, Skagit, Snohomish, Thurston
- National Estuary Programs: Puget Sound
- Other Watersheds Upstream: Strait of Georgia, Lower Skagit, Stillaguamish, Snohomish, Lake Washington, Duwamish, Puyallup, Nisqually, Deschutes, Hood Canal
- Other Watersheds Downstream: Nooksack, Lower Skagit, Snohomish, Duwamish, Hood Canal, Dungeness-Elwha
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The Puget Sound Partnership is charged with preparing a State of the Sound report every two years to inform the legislature and the public on the status of restoration efforts in Puget Sound.
The following article was part of a pilot project at the Encyclopedia of Puget Sound in which University of Washington undergraduates working with the Burke Museum created localized accounts for two iconic amphibian species of the Puget Sound region: the Northern Red-legged Frog and the Pacific Chorus Frog. The Northern Red-legged Frog is described here relative to its local behavior, habitat, threats and morphology.