Big Falls Flowage
Rusk County, Wisconsin · WBIC 2230100
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
369 acres
Max depth
45 ft
DNR lake type
Complex, Riverine
A river-like water type, with flow instead of a still basin. 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 (satellite estimate)
- Summer 20163.2 ft (864 satellite pixels)
- Summer 20178.3 ft (490 satellite pixels)
No one has measured this lake's clarity in the monitoring data. These are estimates from satellite images of two summers only, so they may not match the lake today.
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. The estimate tops out at 16 feet.
Landsat satellite estimates published by the Wisconsin DNR (summers 2016 and 2017), averaged over the lake's outline. Informational use only.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 18 (Apr 9 to Apr 26)
- Surface reaches 48°Fabout Apr 30 (Apr 19 to May 7)
- Surface reaches 64°Fabout May 24 (May 18 to May 28)
- June surface70°F, usually 69 to 72°F
- July surface76°F, usually 75 to 77°F
- August surface72°F, usually 71 to 74°F
Forms a warm top layer around May 10, lasting about 140 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.
Boat landings
- 1Big Falls FlowageBoat ramp · Concrete surface · Other
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Rusk County
- Dairyland Reservoir (Flambeau)4.9 miles away
- Park Lake7.3 miles away
- Lake La Verne8.6 miles away
- Ladysmith Flowage8.8 miles away
- Shamrock Lake11 miles away
- Dump Lake11 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
- Boat landingsWisconsin DNR public boat access sites, 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
- Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026
- Satellite clarity estimateLandsat summer clarity estimates published by the Wisconsin DNR (2016, 2017), 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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