I haven't used mine at all on 2 lakes this year, but I know the depths and they are under 6 ft deep in the deepest holes, but I sure have pulled a bunh of crappie and bluegills out of those 2 lakes. The fish stay near the smae cover all year long there. No need for a depth finder on these lakes. Otherwise, I only use mine to check depth. Not a great DF, but good enough to tell me its 9.6 fow and structure is 3' high.