What You'll Find at Lake Mendota

Lake Mendota is Wisconsin's second-largest lake by surface area and sits directly north of Madison, making it one of the most accessible warm-water fisheries in the state. The lake holds a strong population of walleye, largemouth bass, northern pike, and panfish — primarily bluegill and crappie. The lake is roughly 9,400 acres, with depths reaching 85 feet in the deepest basin, though much of the productive fishing happens in shallower structure along the shoreline and mid-lake humps.

Mendota's character changes dramatically by season. Summer brings heavy recreational boat traffic and warm surface temperatures that push walleye and pike into deeper water or low-light periods. Fall and spring offer the most consistent fishing, with fish moving into shallower feeding zones. Winter ice fishing is popular for walleye and panfish, though ice conditions vary year to year and should be verified locally before heading out.

Key Takeaways

  • Walleye fishing peaks in spring (April through May) and fall (September through October), with summer requiring deeper presentations and night fishing.
  • Public boat launches are located at Tenney Park, Babcock Park, and the University Bay launch, all on the Madison side of the lake.
  • A Wisconsin fishing license is required for all anglers 16 and older; no special stamp beyond the standard license is needed for Mendota.
  • Largemouth bass season runs from the first Saturday in June through March 31, with a 12-inch minimum size limit and a daily bag of five fish.
  • The lake is open to ice fishing in winter, but ice thickness should be confirmed with local bait shops or the Wisconsin DNR before fishing.

Walleye Fishing Seasons and Tactics

Walleye are the primary draw for many Mendota anglers, and the lake supports a solid population that responds well to both live bait and artificial presentations. Spring (April and May) is the most productive season — walleye move into shallow bays and along the shoreline to spawn and feed heavily afterward. Jigging with live minnows in 8 to 15 feet of water near weed edges and rocky points produces consistent results. Casting crankbaits and soft plastics along the same structure also works well during this window.

Summer walleye fishing requires a shift in strategy. Surface temperatures climb into the 70s and 80s, and walleye retreat to deeper structure or suspend in the water column. Night fishing becomes more productive — casting or trolling along the deeper edges of mid-lake humps and along the drop-offs near the lake's deepest basins yields better results than daytime fishing. Many anglers switch to live bait presentations at night, using slip sinkers to keep minnows near the bottom in 25 to 40 feet of water.

Fall (September through October) mirrors spring in productivity. Walleye move back into shallower water as temperatures drop, and jigging and casting techniques that worked in spring return to form. The fall bite often lasts longer into the day than summer fishing, making it more accessible for anglers who cannot fish at night.

Largemouth Bass and Northern Pike

Largemouth bass thrive in Mendota's weed beds and shallow bays, particularly on the north and west sides of the lake. The season opens the first Saturday in June and runs through March 31. Bass fishing is strongest in early summer (June and July) before the weeds become too thick, and again in fall when water temperatures cool. Casting soft plastics, spinnerbaits, and topwater lures along weed edges and into pockets of open water produces strikes. A 12-inch minimum size limit applies, with a daily bag of five fish.

Northern pike are present but less abundant than walleye or bass. They inhabit the same shallow, weedy areas as largemouth bass and respond to similar lures — larger spinnerbaits, swimbaits, and soft plastics in the 4- to 6-inch range. Pike fishing can be good in spring and fall, though summer weed growth sometimes makes presentations difficult. There is no closed season for pike on Mendota, and the daily bag limit is five fish with a 24-inch minimum size.

Panfish and Winter Ice Fishing

Bluegill and crappie are abundant in Mendota and offer reliable fishing year-round, especially for anglers targeting smaller fish or fishing with children. Summer panfish can be found around docks, weed beds, and shallow structure in 3 to 8 feet of water. Small jigs tipped with live maggots or waxworms, or tiny spinners, work consistently. Fall panfish fishing improves as fish concentrate in slightly deeper water (8 to 15 feet) along weed edges and humps.

Winter ice fishing is a major draw on Mendota when ice conditions allow. Walleye, bluegill, and crappie are the primary targets. Jigging with live minnows or spoons in 15 to 30 feet of water produces walleye, while panfish can be found in shallower areas around weed beds. Ice thickness should be verified before fishing — contact local bait and tackle shops or check Wisconsin DNR updates for current conditions. A standard Wisconsin fishing license is required for ice fishing as well.

Public Access and Boat Launches

Mendota has three primary public boat launches accessible to anglers. Tenney Park, located on the east side of the lake in Madison, offers a concrete launch with parking and is the most heavily used access point. Babcock Park, also on the Madison side, provides another public launch with parking and facilities. The University Bay launch, operated by the University of Wisconsin, is open to the public and offers access to the north end of the lake.

All three launches charge a daily fee or require a state park vehicle sticker. Parking is available at each location, though spaces fill quickly on weekends and during peak seasons. Shore fishing is also possible along public areas, particularly around the parks and along some sections of the Madison shoreline, though access is more limited than at boat launches.

Regulations and Licensing

A Wisconsin fishing license is required for all anglers 16 years and older. Licenses can be purchased online through the Wisconsin DNR website, at bait and tackle shops, or at sporting goods retailers throughout the state. A standard annual license covers all species on Mendota — no additional stamps or endorsements are required beyond the base license.

Size and bag limits vary by species. Walleye have a 15-inch minimum size limit and a daily bag of five fish. Largemouth bass require a 12-inch minimum with a five-fish daily bag. Northern pike have a 24-inch minimum and a five-fish daily bag. Panfish (bluegill and crappie) have no minimum size and a daily bag of 25 fish combined. Current regulations should be confirmed with the Wisconsin DNR before fishing, as rules can change.

When to Fish Lake Mendota

Spring (April through May) and fall (September through October) are the most productive seasons for walleye and bass. Water temperatures are moderate, fish are active in shallow water, and fishing pressure is lighter than in summer. Spring offers the added benefit of spawning-related feeding activity, while fall provides cooler, more comfortable fishing conditions.

Summer fishing is possible but requires more effort — walleye fishing shifts to night hours, and bass fishing is best early in the morning or late in the evening. Winter ice fishing can be excellent when ice conditions are safe, typically from late December through February, though this varies year to year. Summer is the busiest season for recreational boating, which can make daytime fishing more challenging.

Frequently Asked Questions

What is the best time of year to fish Lake Mendota?

Spring (April and May) and fall (September and October) are most productive for walleye and bass. Water temperatures are moderate, fish are in shallow water, and fishing pressure is lighter than in summer. Winter ice fishing can also be excellent when ice is safe, typically late December through February.

Do I need a special permit to fish Lake Mendota?

No. A standard Wisconsin fishing license is all that is required for anglers 16 and older. Licenses are available online through the Wisconsin DNR website or at local bait shops and sporting goods stores. No additional stamps or endorsements are needed for Mendota specifically.

Can I fish from shore at Lake Mendota?

Yes, shore fishing is possible around the public parks and some sections of the Madison shoreline, though access is more limited than at boat launches. Tenney Park and Babcock Park both offer shore fishing opportunities in addition to boat access.

What size boat do I need for Lake Mendota?

Mendota is a large lake with variable conditions, so a boat 16 feet or larger is recommended for safety and comfort, especially if fishing the deeper basins or mid-lake structure. Smaller boats can fish the shallower bays and shoreline areas, but wind can build quickly on larger lakes, so check conditions before launching.

Is ice fishing safe on Lake Mendota?

Ice fishing is popular on Mendota, but ice thickness varies year to year and by location on the lake. Always verify current ice conditions with local bait shops or the Wisconsin DNR before heading out. A minimum of 4 inches of clear ice is generally recommended for walking, though thicker ice is safer.