I ran across a pond that was supposed to be 12' with an average depth of close to 8'. Deepest part was 7' with the average depth closer to 4'.
This seems to be a common occurrence amongst pond owners. When we purchased our property we were told the pond was 30 feet deep. I just assumed that was true. One day I designed a poor man's depth tester (rope with knots at one foot intervals and a weight on the bottom). I paddled around the pond using this contraption and soon found that the pond at it's deepest was only about 17.5 feet deep. During the highest water mark and it may reach 19 to 20 feet but no where near 30 feet.
