if they didnt have a packer and just used a dozer and trackhoe you can bet on 5 to 10% shrinkage of your dam. when using a trackhoe and dozer only you shuold add 10% so when it gets done settling it will be where you want it. for example if desired dam height is 10 ft tall make it 11 ft tall and when it gets done settling it will probably only be 10 ft tall. i will add 3% even when i use a packer to be on the safe side. they may have already done this i'm just brainstorming in a brain with limited capacity.
