* Most of the River is Flatwater, or Class 1, though there is abundant whitewater on the tributaries. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Visit the Willamette River Water Trail interactive recreation map for vehicle access and parking, boat launches and camping locations. A bascule highway bridge across the canal has a vertical clearance of 27 feet closed. Basics/Facts — Willamette Riverkeeper The mainstem Willamette flows 187 miles north from the confluence of the Middle and Coast Fork Willamette Rivers, to its confluence with the Columbia River.

Winding through forest, farmland and city, it travels northward the length of the Willamette Valley before joining the Columbia River at Portland. Maps. One of our most frequent requests is for the GIS files for the National Wild & Scenic Rivers System. 217-mile water-based trail flows through forests, meadows, parks, farms, and cities large and small. The Willamette River begins its nearly 300-mile journey in the high Cascades southeast of Eugene. The Willamette River and its middle and coast forks extend more than 255 miles from Cottage Grove in the southern Willamette Valley stretching northward to Portland where the river flows into the Columbia River.

Bound by the Cascade Mountain Range to the east and the Coast Range to the west, the Willamette Basin is the largest watershed entirely con * Much of the surrounding landscape is agricultural, though in the last 40 years the State of Oregon has purchased numerous riverside sites.

Be the first to … Willamette Falls Canal, on the W bank 22.8 (26.2) miles above the mouth, has four locks with a total lift of 50 feet; usable lock dimensions are 175 feet long, 37 feet wide, and 5 feet deep over the miter sills at low water.

The River Trail descends from the Willamette River headwaters in the Cascade and Coast ranges to Portland, Oregon and to the confluence with the Columbia River. Over the last 3-4 years, the managing agencies, lead by the National Park Service, and ESRI have worked to greatly enhance the GIS database. The Willamette River (wil-LAM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow.

The Willamette River is nearly 200 mile long and weaves its way North, through the Willamette Valley.