If you are having a slow day bring a pole and a little bait! This cache is an easy park and grab if you dont want to do any fishing though. Here's a little info about the spillway.
Canton Lake Dam was completed in 1948 and is an earthen embankment with a gate controlled concrete gravity chute-type spillway located on the right abutment. The dam is a 15,140-foot-long structure with a 640-foot gated, concrete spillway which rises to a maximum height of 68 feet above the streambed. State Highway 58-A extends across the embankment and spillway. The spillway discharges are controlled by 16 tainter gates. The outlet works consists of three sluices that pass through the spillway weir. The dam provides flood control protection as well as water storage on the Canadian River in Oklahoma.