Trude Lake
Iron County, Wisconsin · WBIC 2295200
The DNR has advice about eating fish from this water. How much is safe depends on the fish and on who is eating it. Look it up on the DNR site
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
781 acres
Max depth
48 ft
DNR lake type
Complex, Cool, dark water color
Water clarity
15 ft
Clear, measured Aug 2026
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
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1973), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
15 ft Secchi depthClear
Last measured Aug 28, 2026. 88 readings on record, 1998 to 2026.
Typical summer clarity (June to September): 9 ft, moderate, from 65 readings (2012 to 2026).
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 Turtle Flambeau Flowage - Trude Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
69.8°F surface, measured Aug 28, 2026
Measured near the surface (0.91 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Apr 20 (Apr 12 to Apr 25)
- Surface reaches 48°Fabout May 1 (Apr 24 to May 8)
- Surface reaches 64°Fabout May 27 (May 21 to Jun 4)
- June surface70°F, usually 68 to 71°F
- July surface75°F, usually 74 to 76°F
- August surface72°F, usually 70 to 74°F
Forms a warm top layer around May 5, lasting about 148 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 calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Measured: Wisconsin DNR via the Water Quality Portal (checked Oct 23, 2026). 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.
Stocking history
- Muskellungelast stocked 2017 (large fingerling); stocked in 3 years since 2010
Stocking shows what was added to the lake, not what is in it now.
Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.
Fish recorded near this lake
- Black Bullhead Ameiurus melas1988; 1 record
- Black Crappie Pomoxis nigromaculatus1988; 1 record
- Northern Pike Esox lucius1988; 1 record
- Pumpkinseed Lepomis gibbosus1988; 1 record
- Yellow Perch Perca flavescens1988; 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.
Boat landings
- 1Trude Lake AccessBoat ramp · Concrete surface · State(dnr)
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Iron County
- Nokomis Lake0.7 miles away
- Sand Lake1.2 miles away
- Dead Horse Lake1.4 miles away
- Wilson Lake1.9 miles away
- Popko Lake2.1 miles away
- One Man 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
- Stocking historyWisconsin DNR annual fish stocking summary, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Boat landingsWisconsin DNR public boat access sites, checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Measured temperatureWisconsin 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
- Fish recordedOpen fish survey and museum records, via GBIF, checked Oct 23, 2026
- Fish consumption advice flagWisconsin DNR advisory areas (flag and link only), checked Oct 24, 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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