Archives at the Institute for Fisheries Research (IFR) hold records of thousands of lake surveys from the University of Michigan and Michigan Department of Natural Resources. The records contained in this dataset are jpeg images of the index card records from the IFR surveys. Images include the front of the card and when available, the back of a card. and Management Record cards show recommendations of management actions for each lake and then the record of actual management practices and results. Each action includes a date. Examples of management recommendations and actions include stocking, habitat management, regulation, and eradication.
