Technological Advances in Lake Mapping
Advances in technology have helped make lake mapping much easier. In the not too distant past, lake mapping was done by hand. Holes were drilled through the ice and weighted drop lines were used to measure depths and collect bottom samples. This was a laborious process that often took many days to complete. Much of this mapping was conducted by the Michigan Conservation Department Institute of Fisheries Research in the 1940 to 1970 timeframe.