Caldron FallsÂ Flowage is a 1063 acre reservoir located inÂ Marinette and Oconto County. It has a maximum depth of 40 feet. Visitors have access to the lake from Fisher’s Camp Resort and public boat landings. Fish include Musky, Panfish, Largemouth Bass, Northern Pike and Walleye. The lake’s water clarity is low.Â Fisher’s Camp Resort is the only place on Caldron FallsÂ Flowage. You can also get to the bottom of the Caldron Falls dam by way of the Peshtigo River.