Hi all, I am in the early stages of building a pond(clearing land at this point)and I am concerned about possible damage that the crayfish might do to the dam. In one of my ponds there are easily a hundred chimneys and holes in the dam this year. I was wondering if there is anything I can do with the new dam to prevent it. I was thinking of something like a plastic liner a foot under the soil or maybe a layer of 3" stone (could be expensive) under the soil as well. In the existing pond, that was built by an excavator, the dam is 12' wide at the top and serves as a road so hopefully the crayfish can't hurt it, but in the pond I am building the dam will be narrower, maybe 6' to 8' wide.

Any suggestions will be appreciated.

Thanks, Jeff