Grovers,
Most dams leak....at least to some extent. Soil is a pervious material and will leak given time and head pressure (height of Dam), regardless of the soil texture. Actually the propensity for a dam to leak goes up exponential as the dam gets higher.
Probably why most States have a �maximum height of Dam requirement�. Nebraska = 25 ft. without special permits; Wyoming = 20 ft. without special permits.
The trick is to minimize leaking possibilities through proper dam installation (which you have probably done), and hope you have enough inflow, water depth and rainfall to keep the pond at an acceptable level.
Good Luck!
Ed
