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DNR Contacts for Twin Valley Lake

Find A Lake > Iowa County > Twin Valley Lake

Twin Valley Lake
Iowa County, 136 Acres


Twin Valley Lake was monitored by volunteers between 2005 and 2016. Volunteers monitor water clarity with a black and white Secchi disk. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. Twin Valley Lake is also part of DNR's long term trend monitoring project. Additional monitoring has been done through projects funded in part by DNR Aquatic Invasive Species Grants. Reports and graphs featuring data collected by volunteers, DNR staff and others can be viewed below.

Water Quality Reports and Graphs

Station NameStation IDMapMax YearReports
Twin Valley Lake - Deep Hole253127Map2020Details
Twin Valley Lake Baseline10015109Map2014Details