Beaver River (Oklahoma)

The Beaver River is the historic name for an intermittent river in Oklahoma that drains most of the Oklahoma Panhandle. It is also known as the North Canadian River; both names are in common use. The Beaver River flows from Union County, New Mexico, entering the Oklahoma Panhandle in Cimarron County, then flowing out of state through Sherman County in the Texas Panhandle for about 15 miles (24 km), then back to the Oklahoma panhandle in Texas County, where it is impounded in Optima Lake near Guymon. Downstream of the dam, it continues through the Oklahoma counties of Beaver and Harper before ending in Woodward County.

The antecedent of the Beaver River is Corrumpa Creek, which has a north branch and a south branch both originating from the slopes of Sierra Grande volcano southwest of the town of Des Moines, New Mexico, then converging downstream at Weatherly Lake, a reservoir in Union County, New Mexico.

After the New Mexico/Oklahoma border, Corrumpa Creek is joined by Cienequilla Creek (also known as Seneca Creek) 4.5 miles (7.2 km) northwest of Felt, Oklahoma, after which it begins as the Beaver River. The name arbitrarily changes downstream, the USGS topographic maps mark the stream either "Beaver River" or "North Canadian River". At Fort Supply in Woodward County, Oklahoma, Beaver River ends at its confluence with Wolf Creek after which it continues further as the North Canadian River.

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