Not all crayfish species create burrows that damage pond liners. A few pond oriented crayfish species basically only burrow significant depths into the bottom when water levels drop during drying conditions especially those that happen to be dwelling in streams. Very often immigrating crayfish from streams into ponds are the burrowing types of species as evidenced by mud chimneys along shorelines. To my knowledge the predominate pond non-burrowing crayfish in central US is the papershell or calico crayfish - Orconectes immunis. Crayfish experts may know of other species that rarely form deep burrows.
Last edited by Bill Cody; 11/21/13 08:48 PM.
