The Superior-Courtland Diversion Dam is located on the Republican River 3 miles west of Guide Rock, Nebraska. It is a concrete ogee weir structure with a hydraulic height of 8 feet and a weir crest length of 420 feet. Embankment wings total more than 4,000 feet. The Superior Canal begins at the north side of the dam and extends 30 miles eastward to the State line. The canal has a capacity of 139 cubic feet per second, and supplies water to 5,863 acres north of the river in the Superior-Courtland Unit in Nebraska.
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