The recent wet weather may boost Great Lakes water levels, but experts say they're not sure how much the water will rise or how long it'll last. Lakes Michigan and Huron are already up six inches so far this month.

Question, what is in all that flood water. In addition to the trees branches, plastic water bottles, broken docks and a lot of dirt and sand. Bopaiah Biddanda, associate professor of ecological research at GVSU's Annis Water Resources Institute in Muskegon, says Lake Mchigan can handle that.

"Flooding happens frequently. The big lake is able to take it. Sediment transport is a natural part of the big lake cycle."

Biddanda says things could have been much worse. Had the flood waters happened after farmers begin fertilizing fields, much of that fertilizer and pest controls could have been dumped into the water.

"If the same kind of preciptiation event had occured later in the season, I think we would have had a lot of concern. There would have been farm fertilizers running downstream and causing algae blooms and things like that in the lake."