Michigan: Walleye Stocking Program Continues to Succeed
Walleye are one of the most popular sportfish in Michigan, but most people already knew that. What most people don’t know is the process the Department of Natural Resources uses to rear walleye and stock them in public waterbodies throughout the state. It’s vastly different then our traditional fish rearing methods.
After the DNR’s Pacific salmon program kicked into high gear in the late 60s and early 70s, the focus shifted toward intensive culture of trout and salmon rather than coolwater species – like walleye. Michigan’s state fish hatchery facilities didn’t really have the means to rear those types of species, but some fisheries managers were interested in what could be done to jump start walleye populations, particularly in Saginaw Bay.
“We had some key staff, Leo Mrozinski and Bill Deephouse, who worked together to develop this idea of using ponds to rear walleye that we could stock,” said Ed Eisch, the DNR’s fish production manager. “They started by using old borrow pits located along the highways that had filled with water.”
As if by magic it was discovered this extensive rearing process – one where not much labor or financial resources was needed – was effective and could be replicated throughout the state.
“It’s kind of a cool concept,” Eisch explained. “You basically take these walleye fry, put them in the ponds, and let them do their thing, which is foraging on plankton. All you really have to do is keep track of the plankton and harvest the fish before the system crashes.” Read more