Lake Du Bay
Marathon County, Wisconsin · WBIC 1412200
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
6,700 acres
Max depth
30 ft
DNR lake type
Complex, Riverine
Water clarity
3 ft
Low, measured Sep 2013
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 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
3 ft Secchi depthLowOlder reading
Last measured Sep 18, 2013. 59 readings on record, 2003 to 2013.
Nothing has been measured in the last 5 years, so this may not match the lake today.
Measured at the monitoring station named “Lake Dubay - Deep Area Upstream Sth 34 Off Seagull Landing”.
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 Dubay - Deep Area Upstream Sth 34 Off Seagull Landing. Checked Oct 23, 2026.
Water temperature
Last measured Aug 17, 2026, too long ago to show as the current temperature.
Measured: Wisconsin DNR via the Water Quality Portal (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.
Stocking history
- Muskellungelast stocked 2023 (large fingerling and yearling); stocked in 7 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
- 1Lake Du Bay AccessBoat ramp · Concrete Plank surface · Township
Directions - 2Lake Du Bay AccessBoat ramp · Gravel surface · Township
Directions - 3Seagull RampBoat ramp · Concrete surface · Other
Directions - 4Lake Du Bay Dam Access (listed under Portage County)Boat ramp · Concrete surface · Other
Directions - 5Lake Du Bay Access (listed under Portage County)Boat ramp · Concrete surface · Other
Directions - 6Du Bay Park Boat Ramp (listed under Portage County)Boat ramp · Concrete surface · County
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Marathon County
- Berkhahn Flowage (Townline)6.9 miles away
- Mosinee Flowage7.1 miles away
- Teal Flowage9.1 miles away
- Big Eau Pleine Reservoir9.4 miles away
- Smoky Hill Flowage11 miles away
- South Rice Lake12 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
- 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.
Something wrong on this page? Report a problem.