Thorn Lake
Douglas County, Wisconsin · WBIC 2501300
Size
29 acres
Max depth
6 ft
DNR lake type
Simple, Cool, dark water color
Water clarity
3.7 ft
Low, measured Sep 2000
A cool-water lake type: the DNR groups it with lakes that stay cooler through summer. This describes the lake type in general, not this lake in particular.
Outline
Drawn from the DNR's 24K hydrography (surveyed 1971), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
3.7 ft Secchi depthLowOlder reading
Last measured Sep 5, 2000. 1 reading on record, 2000.
Only one reading is on record.
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 THORN LAKE - THORN LAKE. Checked Oct 23, 2026.
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.
Fish recorded near this lake
- Bluegill Lepomis macrochirus1970; 1 record
- Largemouth Bass Micropterus salmoides1970; 1 record
- Northern Pike Esox lucius1970; 1 record
- Yellow Perch Perca flavescens1970; 1 record
Recorded in open fish survey and museum records (GBIF). A record shows a fish was found near this lake in that year, not that it is there now, and says nothing about how many. Most coordinates are rounded to about 1 km, so a record is attached only when one lake is the clear match.
Open fish survey and museum records from GBIF; datasets are listed on the sources page. Checked Oct 23, 2026.
More lakes in Douglas County
- Haugen Lake0.5 miles away
- Alexander Lake1.3 miles away
- Sauntrys Pocket Lake1.7 miles away
- Crooked Lake1.7 miles away
- Little Simms Lake2.1 miles away
- Snake Lake2.2 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
- Fish recordedOpen fish survey and museum records, via GBIF, checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Depth map linkWisconsin DNR lake maps list, 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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