Castor Lake   Be the first to submit input for Castor Lake. If you have info on Castor Lake, Cimarron County, Oklahoma please submit it here to improve this web site.          These outdoors activities are available near Castor Lake.   Public Lands Near Castor Lake: Black Mesa State Park, Oklahoma, 35 miles away   Hotels Near Castor Lake: Rodeway Inn Dalhart, Dalhart, 42 miles away Holiday Inn Express DALHART, Dalhart, 42 miles away Days Inn Dalhart, Dalhart, 42 miles away Super 8 Dalhart, Dalhart, 42 miles away Best Western Nursanickel Motel, Dalhart, 42 miles away