DNR survey vessel (S/V Steelhead) takes to Lake Michigan
The Michigan Department of Natural Resources today announced that the survey vessel (S/V) Steelhead is back on the water to conduct surveys of Lake Michigan fish populations. The S/V Steelhead will collect data used to estimate relative abundance, biomass, age and growth, health, diet, survival rates, natural reproduction and movements of fish in Lake Michigan.
The S/V Steelhead will be 50 years old in 2017 and has been in continuous operation since 1968 – spending almost 200 days on the water annually. It is used in a variety of fisheries assessment operations – including spring evaluations of adult yellow perch, lake whitefish, lake trout and Chinook salmon populations. Read more


