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DNR Contacts for Hartlaub Lake

Find A Lake > Manitowoc County > Hartlaub Lake

Hartlaub Lake
Manitowoc County, 37 Acres


Water Quality

One measure of a lakes health is the trophic state, which relates to the amount of algae in the water. The average summer trophic state for the last 5 years was 57 (Eutrophic) and was determined using chlorophyll data. For a Deep Headwater lake, this is considered Fair. Deep Headwater lakes stratify, or form separate layers of water, during the summer months and have a watershed area less than 4 square miles.

Hartlaub Lake has been monitored by volunteers since 1996. Volunteers monitor water clarity with a black and white Secchi disk. Some also collect water samples, which are sent to the State Lab of Hygiene to be analyzed. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. Additional monitoring has been done through projects funded in part by DNR Lake Grants and 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
Hartlaub Lake - Deep Hole363229Map2021Details
Hartlaub Lake - N side E of public access10041549Map2013Details
Hartlaub Lake -- Draining To West Lobe10021085Map1996Details
Hartlaub Lake -- Spring Draining To North Shore10020550Map1996Details
Hartlaub Lake -- Spring Draining To Sw Corner10021084Map1996Details