Stillaguamish River

In Arlington to North and South Fork unite

The Stillaguamish River is a river in north-western U.S. state of Washington.

It arises mainly from two arms, the 72 km long northern arm and the southern arm. The two arms are combined travels to its mouth in the Puget Sound at Arlington, from where the river still about 35 km. The catchment area of the river drains part of the Cascade Range north of Seattle and covers an area of 1813 km ².

Run

The Stillaguamish River is formed by the confluence of the northern and southern arm, both have their origin in the Cascade Range. The northern arm has its origin in a number of branches in a remote area of ​​Skagit County near the Finney peaks, about 15 km north of Darrington. The river collects the water from a variety of Creeks and flows initially southwards. Later he flows west at the foot of the mountains along the County boundary between the Skagit County and Snohomish County. Tributaries of the North Fork Stillaguamish Rivers are Boulder River and Deer Creek.

The 48- km-long southern arm rises almost in the center of Snohomish County, about 32 km south of Darrington and flows in a westerly and north-westerly direction to Silverton, robe and Granite Falls over.

The two branches of the river unite at Arlington in the northwest of Snohomish counties. The Stillaguamish River then flows to the sea. It flows about 15 km west of Arlington at the northern end of the Port Susan, an arm of Puget Sound. Between the arms is a part of the Mount Baker - Snoqualmie National Forests.

Hydrology

On the northern arm of the Stillaguamish Rivers of the United States Geological Survey maintains at Arlington, about 10 km above the junction with the southern arm, a level. The annual daily streamflow in the long-term average from 1929 to 2005 was 54 m³ / s The highest observed value was measured on 21 October 2003 and was 1250 m³ / s, the lowest water levels of 3.3 m³ / s was observed on 23 September 1938.

Fish species in the river

The Stillaguamish River and its tributaries are known for their stock of salmon. Eight species of salmon spawn in this river system. These include king salmon, silver salmon, chum salmon, pink salmon and sockeye salmon, and rainbow trout and bull trout ( Salvelinus confluentus ).

Name Variants

In the Geographic Names Information System of the United States Geological Survey, a number of alternative names are listed for the Stillaguamish River. These include Tuxpan River, Stoh - luk - whahmpsh River, Stillaquamish River, Steilaguamish River, Stalukahamish River and other similar spellings.