One species of crayfish has been observed at Pipestone National Monument. During macroinvertebrate sampling to monitor the health of Pipestone Creek, Northern Crayfish of varying ages were collected. There is no observational record of Calico Crayfish within Monument borders, but the species does occur in the region. It is possible that Calico Crayfish may occasionally enter the waters of Pipestone Creek.

Family
Common Name                             Scientific name

Northern Hemisphere Crayfishes (Cambaridae)
Calico Crayfish	Orconectes immunis
Northern Crayfish/Virile Crayfish	Orconectes virilis