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The channel begins at the Wilmette Pumping Station, where sluice gates are generally used to provide for a consistent water level in the channel by controlling water diversion from Lake Michigan, although the gates are opened during severe storm weather conditions to allow the channel to backflow into the lake in order to prevent downstream ...
Constrained by dikes, the channel is about one-third as wide as the lower Willamette main stem. [3] U.S. Route 30 and tracks of the Burlington Northern Railroad run roughly parallel to the channel, and to its left, between its source and the Multnomah–Columbia county border at about the channel's river mile (RM) 12.5 or river kilometer (RK) 20.1.
Hills Creek Reservoir, also known as Hills Creek Lake, is an artificial impoundment behind Hills Creek Dam on the Middle Fork Willamette River in the U.S. state of Oregon. The lake is near Oakridge in Lane County about 40 miles (64 km) southeast of Eugene, at the confluence of Hills Creek with the Middle Fork.
Then Mill Creek enters from the right, opposite Wallace Marine Park. Still in Salem, the river flows by River Road City Park and Rivers Edge Park, both on the right. North of Salem, the river passes the city of Keizer, which is on the right, before receiving Glenn Creek from the left about 79.5 miles (127.9 km) from the mouth. On the right at ...
Willamette Valley map showing main stem and major tributaries. The Willamette River drains a region of 11,478 square miles (29,730 km 2), which is 12 percent of the total area of Oregon. [4] Bounded by the Coast Range to the west and the Cascade Range to the east, the river basin is about 180 miles (290 km) long and 100 miles (160 km) wide. [13]
Swan Island from the south in 1920. The island was first noted as "Willow Island" by the United States Exploring Expedition in 1844. [3] [4] River traffic on the Willamette was impeded by a bar near the island, and annual dredging by the U.S. Army Corps of Engineers was required to maintain a navigable channel. [5]
Elijah Bristow State Park is an 847-acre (343 ha) park that stretches for 3 miles (4.8 km) along the south bank of the river below Dexter Dam. Park amenities include picnic tables, restrooms, equestrian staging areas, horseshoe pits, a wildlife viewing platform, and a boat launch. The park has 12 miles (19 km) of trails through woods and meadows.
Ross Island is the main island of a four-island cluster in the Willamette River in Portland, Oregon, in the United States. The islands, covering a total of about 400 acres (160 ha), are owned mainly by Ross Island Sand and Gravel (RISG), which mined them extensively between 1926 and 2001. [ 1 ]