Caldron Falls Reservoir is a 1,063 acre lake located in Marinette, Oconto Counties. It has a maximum depth of 40 feet. Visitors have access to the lake from many public boat landings. The lake also has a public beach. Fish include largemouth bass, northern pike, walleye, muskie and panfish. According to the DNR, largemouth bass, northern pike and muskie are common in the lake while walleye and panfish are listed as present.