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Biron Flowage

Portage & Wood Counties, Wisconsin

Biron Flowage is a 2,187-acre Wisconsin River impoundment in Portage and Wood Counties in central Wisconsin, formed by the Biron Dam built in 1916. It is noted for muskellunge and northern pike along with walleye, smallmouth bass and channel catfish.

5N2 mi
Air temp in Rudolph, WI Loading current temperature…
Red pins match the numbered boat launches below. Outline: U.S. Geological Survey, National Hydrography Dataset.
Surface area2,187 acres
Max depth23 ft
Shoreline—
Boat motorsCheck local rules

Species

Fishery rating out of 5.

Smallmouth Bass●●●●○

Rock, gravel and points. Tubes, jerkbaits and drop-shots.

Walleye●●●●○

Points, flats and reefs at low light. Jigs and live bait early, crankbaits and crawler harnesses in summer.

Musky●●●○○

Big baits along weed edges, rock bars and channel breaks, best in fall.

Northern Pike●●●○○

Weed edges and bays. Spoons, spinnerbaits and tip-ups through the ice.

Panfish●●●○○

Bluegill, crappie and perch in weeds and brush. Great through the ice.

Largemouth Bass●●●○○

Weeds, docks and wood in the shallows.

Catfish●●●○○

Cut bait and nightcrawlers on flats and river mouths in the evening.

Boat launches

5 launch sites. Fees and hours change, so confirm before you go.

  • Galecke Park landing (Plover)Ramp
    Public boat landing with two ramps and ample parking; day or season pass requiredDirections ↗
  • Upper end landing, Blue Heron LanePublic
    Public boat landing off West River DriveDirections ↗
  • Lower end landing, Town of BironPublic
    Public boat landing off Biron DriveDirections ↗
  • More public accessPublic
    See the WDNR or lake website for all ramps and feesDirections ↗
  • 5Hwy U Boat RampPublic
    Wisconsin DNR public boat rampDirections ↗

Size & creel limits

Special rules for this lake, confirmed from official state regulations. Minimum size and daily limit.

SpeciesMin sizeDaily limit
Walleye
Walleye, sauger and hybrids; open all year
15 in (1 fish may be 28 in or over)3 / day
Largemouth Bass
Largemouth and smallmouth combined; open all year
14 in5 / day
Smallmouth Bass
Combined with largemouth; open all year
14 in5 / day
Northern Pike
Open all year
32 in1 / day
Muskellunge
Includes hybrids; open May 2 - Dec 31, 2026
50 in1 / day
Panfish
Open all year
See Wisconsin rules book ↗25 / day
Catfish
Open all year
See Wisconsin rules book ↗10 / day
Lake Sturgeon
Closed to fishing
Closed0

Other species in this lake: look up the limits at Wisconsin DNR ↗

Verified October 2026. Rules change, so confirm current limits with the Wisconsin DNR before you fish.

Bait & tackle nearby

No shops listed yet for this lake. Use the search link below.

Search more bait shops near Biron Flowage ↗

Local tips

  • The bottom has sand, gravel, rock and abundant wood and stumps; average depth is 8-10 feet.
  • The stretch from the spillway down to the Blue Heron landing is reported to fish well year-round, as is the Mill Creek/Love Creek area.
  • Water levels can change quickly; the area guide suggests calling 800-775-6404 for water level updates before launching.

View on interactive map

Zoom and pan on a street, satellite or terrain map. Red pins are boat launches.

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Always wear a life jacket and check your state's current regulations before you fish.