Officials in Marquette County are continuing a probe into what's causing low water levels on inland lakes.
Reports state that the county board wants to bring in the Michigan Department of Environmental Quality to help find answers.
Board Chairman Gerald Corkin says water levels are down significantly in a number of places in the Upper Peninsula county.
Some residents have complained that the pumping of water from two wells at a long-closed Air Force base may be to blame for low water levels on Martin Lake.
Residents near the lake want the wells capped and last year began asking the county board for help.
A former Sands Township official also says that area is seeing a drop in groundwater levels.