Narrower Terms (7)

• Chehalis River Estuary (Wash.)
• Columbia River Estuary (Or. and Wash.)
• Duwamish River Estuary (Wash.)
• Grays Harbor Estuary (Wash.)
• Puyallup River Estuary (Wash.)
• Snohomish River Estuary (Wash.)
• Willapa Bay (Wash.)