stilly

Stilly is a colloquial name for the Stillaguamish River, a river in northwestern Washington state, United States. The nickname is widely used by local residents, outdoor enthusiasts, and regional media to refer to the river and its watershed. The Stillaguamish originates in the Cascade Range and generally flows westward through Snohomish County, passing communities such as Arlington and Stanwood before emptying into Puget Sound. The term "Stilly" is commonly seen on maps, signage, and in recreational contexts like fishing reports, river cleanups, and community events along the river.

Origin and usage of the name reflect its roots in the Stillaguamish River’s long-standing connection with the region. The shortened form is a familiar form of reference among locals and is often found in informal writing and local journalism. In formal government documents and broader state-wide contexts, the full name "Stillaguamish River" is more typical.

Environmental and cultural significance of the Stilly/Stillaguamish watershed is notable. The watershed includes forested uplands and agricultural lands and supports salmon, steelhead, and other wildlife. It has faced environmental challenges such as habitat loss and water quality concerns, which have prompted restoration and conservation efforts by state agencies, tribal organizations, and community groups. The river also plays a role in regional recreation and tourism, contributing to the identity of the communities along its course.

See also: Stillaguamish people; Stillaguamish River; Snohomish County.