Natural shallow lake

Mason Lake

Adams / Marquette, Wisconsin

Mason Lake is a 882-acre very shallow lake (maximum depth 9 feet) in Adams and Marquette counties with very low water clarity. WDNR lists largemouth bass as common; muskellunge, panfish, northern pike and catfish are present.

Air temp in Briggsville, WI Loading current temperature…

Map data © OpenStreetMap contributors.

Current air temperature at Mason Lake (National Weather Service) ↗

Surface area882 acres

Max depth9 ft

Shoreline—

Boat motorsCheck local ordinances

Species

Fishery rating out of 5.

Largemouth Bass●●●●○

Common per WDNR

Muskellunge●●○○○

Present per WDNR

Northern Pike●●○○○

Present per WDNR

Bluegill●●○○○

Panfish listed as present

Crappie●●○○○

Panfish listed as present

Channel Catfish●●○○○

Catfish present per WDNR

Boat launches

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

Mason Lake public boat landingsPublic
WDNR lists 3 public landings; Lake-Link has a Mason Lake boat launch listingDirections ↗
More public accessPublic
See the WDNR lake page for all landingsDirections ↗

Size & creel limits

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

Species	Min size	Daily limit
Walleye Open May 2, 2026 to Mar 7, 2027	15 in	3 / day
Largemouth/Smallmouth Bass Fish 14-18 in cannot be kept; only 1 over 18 in; Open May 2, 2026 to Mar 7, 2027	See Wisconsin rules book ↗	5 / day
Northern Pike Open May 2, 2026 to Mar 7, 2027	32 in	1 / day
Muskellunge May 2 to Dec 31, 2026; open water only	40 in	1 / day
Panfish Open all year	See Wisconsin rules book ↗	25 / day
Catfish (channel) Open all year; max 24 if a flathead is included	See Wisconsin rules book ↗	25 / day
Catfish (flathead) May 2 to Sept 30, 2026; 36-42 in cannot be kept	30 in	1 / day

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

Closest shops to the lake and its boat launches. Call ahead for live bait and hours.

The Minnow BucketNearby
321 S. Franklin Ave., Oxford, WI 53952(608) 586-5168 Directions ↗

Search more bait shops near Mason Lake ↗

Local tips

Very shallow, stained water: weedless baits and bright colors help
Wind stirs up the bottom: fish the lee shore
Check WDNR regulations for musky and pike before keeping fish

View on interactive map

Zoom and pan on a street, satellite or terrain map. Red pins are boat launches; blue pins are bait shops nearby.

More Wisconsin lakes

Lake Puckaway Lake DuBay Lake Winneshiek Lake Winneconne Willow Flowage Lake Vieux Desert Lac Vieux Desert Trout Lake All Wisconsin lakes →

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