For Lake St., Marquette Park, Wells St., and Ogden Dunes beaches
Project by US Geological Survey in cooperation with the City of Gary, Indiana Department of Environmental Management , and National Oceanic and Atmospheric Administration
The EPA recommends issuing a swimming advisory when E. coli counts exceed 235 cfu/100m
For more information, please contact Richard Whitman, USGS Lake Michigan Ecological Research Station
PH: 219 926-8336 ext. 424, E-mail: rwhitman@usgs.gov