What Cold Brook Lake offers anglers

Cold Brook Lake is a shallow, weedy walleye and pike lake in central Wisconsin that rewards anglers who understand structure and seasonal movement. The lake runs roughly 400 acres and sits at an elevation that keeps water temperatures cool enough for walleye year-round, though the fish move predictably between deep holes and shallow flats as seasons change. Pike thrive here too, especially in spring and fall when they hunt the weed edges. The lake's character is defined by its vegetation—dense cabbage beds, coontail, and scattered lily pads that hold fish but demand patience and accurate casting.

What makes Cold Brook distinct from other central Wisconsin lakes is its relatively uniform depth across most of the basin, with only a few deeper pockets that become critical holding areas during summer and winter. The lake has public access via a boat landing, and the surrounding area remains undeveloped enough that you can still find quiet water on weekday mornings. If you fish here expecting open-water structure like you'd find on a glacial lake, you'll spend the day frustrated. Cold Brook rewards a different approach: shallow-water presentations, weed-edge hunting, and the willingness to work slowly through likely cover.

Key Takeaways

  • Cold Brook Lake holds walleye and pike year-round, with walleye moving from shallow weeds in spring to deeper holes by midsummer.
  • The lake's defining feature is dense aquatic vegetation, which requires weed-edge presentations and careful boat positioning to avoid snagging.
  • Public boat access is available, and the lake remains relatively quiet compared to heavily developed central Wisconsin waters.
  • Spring and fall are peak seasons for both species, when fish move between shallow feeding areas and deeper structure.
  • Summer walleye fishing requires finding the few deeper holes and fishing them during low-light periods or at night.

Spring fishing: Shallow flats and weed edges

Spring on Cold Brook Lake begins as soon as the ice clears, usually by late March or early April depending on the year. Walleye move shallow to spawn and feed, and they concentrate along the weed edges and in the few shallow bays where vegetation is just beginning to green up. This is the easiest time to find fish, because they're predictable: look for any transition between open water and emerging weeds, and you'll find walleye. Pike are even more aggressive in spring, hunting the same edges and responding to larger presentations.

Jigs tipped with live minnows or soft plastics work well along the weed edges—cast parallel to the vegetation line rather than into it, and work the jig slowly through the water column. Crankbaits that dive to 4 to 6 feet also produce, especially early in the season before the weeds fully develop. The water is still cold, so fish move slowly; a fast retrieve will outrun them. Expect the bite to be best during the first two hours after sunrise and the last hour before sunset, though overcast days can extend the window. By late May, as water temperatures climb and weeds thicken, the bite moves deeper and becomes harder to predict.

Summer: Finding the deep holes

By June, walleye on Cold Brook Lake abandon the shallow flats and move to the few deeper basins where water stays cooler and oxygen levels remain stable. The lake's average depth works against you here—there's no dramatic structure to follow, so you need to know where those holes are. A good map or GPS unit that shows bathymetry is essential. The deepest water on Cold Brook reaches around 35 to 40 feet, and walleye will suspend in the 20- to 30-foot range during the day, moving shallower at night to feed.

Night fishing becomes the most productive approach in summer. Fish the shallow flats and weed edges after dark with live minnows on jigs or slip-sinker rigs, and expect the bite to be steady from about 10 p.m. until an hour before sunrise. During the day, if you want to fish, focus on the deepest holes and fish vertically with live minnows or jigging spoons. The bite is slow and requires patience. Pike, meanwhile, often stay in the weeds even in summer, so if you want to target them during the day, work the thicker vegetation in 6 to 12 feet of water.

Fall: A second peak season

Fall is when Cold Brook Lake comes alive again. As water temperatures drop in September and October, walleye move back shallow to feed aggressively before winter. The weed edges become productive again, and the bite is faster and more consistent than summer. Pike are equally active, hunting the same structure. This is the season when you can catch fish throughout the day, not just at dawn, dusk, or after dark.

Jigs and live minnows remain the most reliable presentation, but you can also throw crankbaits, spinners, and soft plastics with confidence. The fish are feeding to build energy reserves, so they're less cautious than they are in spring. Work the weed edges methodically, and don't skip any visible structure—fallen trees, rock piles, or deeper pockets within the weed beds often hold concentrations of fish. By late October, as water temperatures drop into the 40s, the bite slows again, but it remains steady enough to make a trip worthwhile.

Winter and ice fishing

Cold Brook Lake freezes solid by December, and the ice typically remains safe for fishing through February. Walleye are present throughout the winter, though they're concentrated in the deeper holes and move very little. Tip-ups baited with live minnows are the standard approach—set them over the deep basins and check them regularly. Jigging with small spoons or live minnows also works, but the bite is slow and requires patience. Pike are harder to find under the ice, but they're still present in the weeds; drilling holes along the weed edges and jigging can produce, especially during the first and last weeks of the ice season.

Winter fishing on Cold Brook is a quieter, more contemplative experience than open-water seasons. The lake's shallow character means that ice-out can happen quickly once temperatures rise, so pay attention to weather forecasts and ice conditions. Always check current ice thickness before heading out, and fish with a partner when possible.

Tackle and techniques for weedy water

Cold Brook Lake's dense vegetation demands specific tackle choices. Use a medium-power rod with a sensitive tip—you need to feel the jig working through the weeds and detect bites in heavy cover. Braided line in the 15- to 20-pound range cuts through weeds better than monofilament and provides better sensitivity. A 6- to 8-pound fluorocarbon leader helps with visibility in clear water between the weeds.

Jigs in the 1/4- to 3/8-ounce range are the workhorse lure. Pair them with live minnows, soft plastics, or crawfish imitations. Weedless jigs with a wire guard reduce snagging but sacrifice some sensitivity. When you're fishing the weed edges, position your boat so you can cast parallel to the vegetation rather than into it—this keeps you out of the thickest cover and lets you work the productive edge where walleye and pike hunt. If you do snag, try backing the boat toward the snag rather than pulling hard; often the jig will come free. Carry extra jigs and leaders; you will lose tackle in this water.

Access and regulations

Cold Brook Lake has a public boat landing managed by the Wisconsin Department of Natural Resources. The landing is basic but functional—a gravel ramp with parking for a modest number of vehicles. There is no fuel dock or bait shop on the lake, so bring everything you need before you arrive. The nearest towns with supplies are a short drive away.

Wisconsin fishing regulations apply. Walleye have a daily limit and a minimum size; pike have a daily limit as well. Regulations can change year to year, so check the current Wisconsin DNR fishing guide before you go. A Wisconsin fishing license is required for all anglers 16 and older. The lake is open to public fishing year-round, though winter access depends on ice conditions.

Frequently Asked Questions

What's the best time of year to fish Cold Brook Lake?

Spring (late March through May) and fall (September through October) are the most productive seasons. Fish are shallow, aggressive, and easier to locate. Summer requires more effort and patience, especially during the day. Winter ice fishing is possible but slow.

Do I need a boat to fish Cold Brook Lake?

A boat gives you access to the deeper holes and lets you position yourself along weed edges effectively. Shore fishing is possible but limited to the area around the boat landing. Most anglers find a boat necessary to fish this lake well.

What size fish can I expect to catch?

Walleye typically range from 12 to 18 inches, with occasional fish in the 20-inch range. Pike are often larger, with 18- to 24-inch fish common and bigger fish possible. The lake produces solid numbers of keeper-size fish rather than trophy-size specimens.

Can I catch pike on the same presentations as walleye?

Yes. Jigs with live minnows and soft plastics work for both species. Pike often hit the same lures you're using for walleye, especially along weed edges. If you want to target pike specifically, use larger minnows and slightly heavier jigs.

Is Cold Brook Lake crowded?

No. It's a small, shallow lake without the amenities or reputation that draw crowds to larger central Wisconsin fisheries. Weekday mornings are especially quiet. Summer weekends see more traffic, but it remains manageable compared to popular regional lakes.