Lake Susan
Portage County, Wisconsin · WBIC 996300
Size
23 acres
Max depth
24 ft
DNR lake type
Simple, Harsh
Water clarity
9 ft
Moderate, measured Sep 2019
A lake type the DNR marks as having harsh conditions for fish. This describes the lake type in general, not this lake in particular.
Outline
Drawn from the DNR's 24K hydrography (surveyed 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
9 ft Secchi depthModerateOlder reading
Last measured Sep 9, 2019. 10 readings on record, 2019.
Nothing has been measured in the last 5 years, so this may not match the lake today.
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.
Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station Lake Susan - Center. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 6 (Apr 2 to Apr 16)
- Surface reaches 48°Fabout Apr 18 (Apr 12 to Apr 25)
- Surface reaches 64°Fabout May 13 (May 8 to May 21)
- June surface73°F, usually 72 to 75°F
- July surface80°F, usually 78 to 80°F
- August surface76°F, usually 73 to 77°F
Forms a warm top layer around Apr 16, lasting about 209 days.
A computer model of this lake's typical weather and water, built from 15 years, 2005 to 2019. Ranges show the middle half of years. The model was not calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Modeled: U.S. Geological Survey lake temperature data release (doi:10.5066/P9CA6XP8).
Today at the lake
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
More lakes in Portage County
- McDill Pond3.0 miles away
- Wisconsin R Fl C3-Stevens Pt3.5 miles away
- Jordan Pond3.6 miles away
- Springville Pond5.3 miles away
- First Lake5.6 miles away
- Second Lake5.9 miles away
Where this comes from
- Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
- OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Typical-year temperatureU.S. Geological Survey lake temperature model (modeled estimate), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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