The U.S. Army Corps of Engineers’ decision to not renew three dredging permits in the Kansas River has upset dredging companies, but found support from a conservation group.

Laura Calwell of Friends of the Kaw says her group is pleased the corps is moving three of 10 dredge operations off the river because it will help the river. The group would like to see all dredging stopped on the Kaw.

But David Penny is owner of Master’s Dredging, which operates one of the three dredges affected by the corps’ decision. The decision puts him out of business because he was also denied a new permit for Missouri River dredging.

The corps stopped dredging at those locations because the Kansas River is too low.