Bonny state park started off around 1951 as a buereu of reclamation project to prevent flooding on the south fork of the Republican River in Colorado, Nebraska, and Kansas.
It operated for years as a state park with improved camping with pull through sites for RV's and a large fishing lake that attracted people from across the world to visit. In it's heyday it hosted around 240,000 visitors a year.
Due to disputes between Kansas, Nebraska and Colorado regarding water rights, the lake had to be drained and the park changed into a wildlife refuge.
This decision was a legal matter but caused all kinds of uproar for sportsmen from across all three states and their attempt to get it overthrown was summarily ignored.
The park is now open as a wildlife refuge, but any of the park improvements have been winterized and closed including the relatively new visitor center and trailer dump station.