Turtle Flambeau Flowage
Iron County, Wisconsin · WBIC 2294900
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
13,545 acres
Max depth
50 ft
DNR lake type
Complex, Two Story
Water clarity
7.2 ft
Moderate, measured Sep 2026
A deep lake type that can hold a cold layer below the warm surface in 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
7.2 ft Secchi depthModerate
Last measured Sep 29, 2026. 195 readings on record, 1998 to 2026.
Typical summer clarity (June to September): 6.5 ft, moderate, from 122 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 - Lake Bastine - Deep Hole. Checked Oct 23, 2026.
Water temperature
78.8°F surface, measured Sep 7, 2026
Measured near the surface (0.3 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Apr 23 (Apr 15 to Apr 29)
- Surface reaches 48°Fabout May 6 (Apr 30 to May 11)
- Surface reaches 64°Fabout May 25 (May 22 to May 30)
- June surface71°F, usually 69 to 73°F
- July surface76°F, usually 75 to 78°F
- August surface73°F, usually 71 to 75°F
Forms a warm top layer around May 8, lasting about 154 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 2025 (large fingerling); stocked in 7 years since 2010
- Lake Sturgeonlast stocked 2015 (large fingerling); stocked in 1 year 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 melas1984 to 2006; 5 records
- Black Crappie Pomoxis nigromaculatus1985 to 2008; 22 records
- Bluegill Lepomis macrochirus1985 to 2008; 12 records
- Bluntnose Minnow Pimephales notatus2006; 1 record
- Brown Bullhead Ameiurus nebulosus1986; 1 record
- Burbot Lota lota1985 to 1988; 4 records
- Central Mudminnow Umbra limi2006; 1 record
- Cisco Coregonus artedi1991; 2 records
- Golden Shiner Notemigonus crysoleucas2006; 1 record
- Largemouth Bass Micropterus salmoides1975 to 2008; 15 records
- Logperch Percina caprodes2006; 1 record
- Muskellunge Esox masquinongy1975 to 2008; 91 records
- Northern Pike Esox lucius1964 to 2008; 137 records
- Pumpkinseed Lepomis gibbosus1984 to 2008; 17 records
- Rock Bass Ambloplites rupestris1964 to 2008; 26 records
- Shorthead Redhorse Moxostoma macrolepidotum1984; 1 record
- Smallmouth Bass Micropterus dolomieu1983 to 2008; 91 records
- Spotfin Shiner Cyprinella spiloptera2006; 1 record
- Walleye Sander vitreus1964 to 2008; 157 records
- White Sucker Catostomus commersonii1984 to 2006; 9 records
- Yellow Bullhead Ameiurus natalis1985 to 2025; 11 records
- Yellow Perch Perca flavescens1964 to 2008; 26 records
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
- 1Fishermans LandingBoat ramp · Concrete surface · Accessible features · State(dnr)
Directions - 2Sturgeon Bay LandingBoat ramp · Gravel surface · State(dnr)
Directions - 3Sportsmans LandingBoat ramp · Concrete surface · Accessible features · State(dnr)
Directions - 4Springstead LandingBoat ramp · Concrete surface · Accessible features · State(dnr)
Directions - 5Murrays LandingBoat ramp · Grate surface · State(dnr)
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Iron County
- Fawn Lake1.1 miles away
- Boot Lake2.4 miles away
- Nokomis Lake2.5 miles away
- Sand Lake2.5 miles away
- French Lake2.6 miles away
- Trude Lake2.9 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
- 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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