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Devils Lake

Devils Lake
Photo by Wisconsin DNR

Contact information
For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
DNR Contacts for Devils Lake

Find A Lake > Sauk County > Devils Lake

Devils Lake
Sauk County, 374 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 41 (Mesotrophic) and was determined using chlorophyll data. For a Two-Story lake, this is considered Excellent.

Devils Lake was monitored by volunteers between 1996 and 2015. 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. Devils Lake is also part of DNR's long term trend monitoring project. 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
2020 bloom response10054354Map2020Details
DEVILS LAKE - LOC 110038344Map2002Details
DEVILS LAKE - LOC 1110038353Map2002Details
DEVILS LAKE - LOC 1210038354Map2002Details
DEVILS LAKE - LOC 1410038356Map2002Details
DEVILS LAKE - LOC 1610038393Map2002Details
DEVILS LAKE - LOC 1810038429Map2002Details
DEVILS LAKE - LOC 210038345Map2002Details
DEVILS LAKE - LOC 2010038431Map2002Details
DEVILS LAKE - LOC 2310038432Map2002Details
DEVILS LAKE - LOC 2410038433Map2002Details
DEVILS LAKE - LOC 2610038434Map2002Details
DEVILS LAKE - LOC 2710038435Map2002Details
DEVILS LAKE - LOC 2810038436Map2002Details
DEVILS LAKE - LOC 2910038437Map2002Details
DEVILS LAKE - LOC 310038346Map2002Details
DEVILS LAKE - LOC 3010038438Map2002Details
DEVILS LAKE - LOC 3110038439Map2002Details
DEVILS LAKE - LOC 3210038440Map2002Details
DEVILS LAKE - LOC 410038347Map2002Details
DEVILS LAKE - LOC 510038348Map2002Details
DEVILS LAKE - LOC 610038349Map2002Details
DEVILS LAKE - LOC 710038350Map2002Details
DEVILS LAKE - LOC 810038343Map2002Details
DEVILS LAKE - LOC 910038351Map2002Details
Devils Lake - (Pilot Plant)573077Map1996Details
Devils Lake - Deep Hole573121Map2019Details
Devils Lake - Deep Hole (LOC 19) (bottom withdrawl pipe)10034776Map2019Details
Devils Lake - Northwest Shoreline10039907Map2015Details
Devils Lake - Southwest Shoreline10039908Map2014Details
Devils Lake Station 1010034779Map2012Details
Devils Lake Station 1310036993Map2012Details
Devils Lake Station 1510034777Map2012Details
Devils Lake Station 1710036994Map2012Details
Devils Lake Station 2110036995Map2012Details
Devils Lake Station 2210034775Map2012Details
Devils Lake Station 2510034778Map2012Details