Williamson River

Williamson River, OR US

100 miles long
Natural Feature Natural Feature
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Williamson River - The Williamson River of south-central Oregon in the United States is about 100 miles (160 km) long. It drains about 3,000 square miles (7,800 km2) east of the Cascade Range. Together with its principal tributary, the Sprague River, it provides over half the inflow to Upper Klamath Lake, the largest freshwater lake in Oregon. The lake's outlet is the Link River, which flows into Lake Ewauna and the Klamath River.

The Williamson rises from a large spring in central Klamath County, on the north side of Fuego Mountain, in the Winema National Forest, about 40 miles (64 km) northeast of Klamath Falls. It flows in a large arc north through the mountains, then west, then southwest through Klamath Marsh and the Klamath Marsh National Wildlife Refuge. Downstream of the refuge, the river flows roughly parallel to U.S. Route 97, receiving Spring Creek from the right at Collier Memorial State Park, about 5 miles (8.0 km) north of Chiloquin. At Chiloquin, it receives the Sprague River from the left at about river mile (RM) 11 or river kilometer (RK) 18. The Williamson enters the northern end of Upper Klamath Lake near Modoc Point, about 20 miles (32 km) northwest of Klamath Falls.

At lower elevations along big streams, the Williamson watershed supports irrigated pastures and other farmlands. Livestock grazing occurs in many locations in the basin. Forests, often cut for timber, cover about 81 percent of the basin and farms account for 6 percent, while range, wetlands, water, and urban areas cover a combined 13 percent. Precipitation in the basin, which lies in the rain shadow of the Cascade Range, averages 23 inches (580 mm) a year along the Williamson above its confluence with the Sprague and about 20 inches (510 mm) along the Sprague.

Read more at Travel Oregon

Williamson River

OR US

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