Spider Lake
Iron County, Wisconsin · WBIC 2306300
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
352 acres
Max depth
49 ft
DNR lake type
Complex, Cool, clear water color
Water clarity
9.5 ft
Moderate, measured Sep 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 1981), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
9.5 ft Secchi depthModerate
Last measured Sep 22, 2026. 255 readings on record, 1998 to 2026.
Typical summer clarity (June to September): 8 ft, moderate, from 125 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 Spider Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
69°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 6 (Mar 29 to Apr 10)
- Surface reaches 48°Fabout Apr 16 (Apr 9 to Apr 21)
- Surface reaches 64°Fabout May 19 (May 13 to May 25)
- June surface72°F, usually 70 to 73°F
- July surface77°F, usually 76 to 79°F
- August surface74°F, usually 73 to 76°F
Forms a warm top layer around Apr 14, lasting about 190 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
- Walleyelast stocked 2024 (large fingerling and small fingerling); stocked in 2 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.
Boat landings
- 1Spider Lake AccessBoat ramp · Concrete Plank surface · County
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Iron County
- Viola Lake0.5 miles away
- Oxbow Lake0.7 miles away
- Little Oxbow Lake0.9 miles away
- Spring Lake1.1 miles away
- Deertail Lake1.4 miles away
- Net Lake1.5 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 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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