What You'll Find at Pewaukee Lake
Pewaukee Lake is a 2,400-acre impoundment in Waukesha County, roughly 20 miles west of Milwaukee. The lake holds walleye, largemouth bass, smallmouth bass, northern pike, and panfish — primarily bluegill and crappie. It's a working water body: the lake serves as a cooling reservoir for a power plant, which means water levels and temperature patterns differ from natural lakes in the region. That thermal influence actually extends the season for some species and creates distinct fishing zones depending on the time of year.
The lake's depth ranges from shallow bays to about 60 feet in the main basin. Much of the shoreline is residential, but public access points exist at several locations, and the lake is open year-round to ice fishing. Walleye and bass are the primary targets for most anglers, though panfish can be productive and less crowded than the main species.
Key Takeaways
- Pewaukee Lake holds walleye, largemouth and smallmouth bass, northern pike, and panfish, with public boat launches at Retzer Nature Center and Pewaukee Park.
- Walleye fishing peaks in spring (April–May) and fall (September–October), with summer requiring deeper structure and night fishing near the power plant discharge.
- Bass bite year-round but are most active in spring spawning season (May–June) and again in fall; shallow bays and weed edges hold fish in early season.
- Wisconsin fishing regulations apply: walleye daily limit is five fish (one over 15 inches), bass limit is five fish, and panfish have no daily limit.
- The power plant discharge on the north shore creates a thermal refuge that concentrates fish in winter and affects summer patterns; check current water temperature before fishing.
Spring Fishing: Walleye and Bass Spawning
April and May are prime months for walleye on Pewaukee Lake. Fish move shallow to spawn, and you'll find them in depths of 4 to 12 feet along the eastern and northern shorelines. Live bait — shiners, chubs, or crawfish — fished on a slip sinker rig or jig works best. Work the transition zones between shallow bays and deeper water, and fish early morning and evening when light is low.
Largemouth bass spawn in the same window, typically in water 2 to 6 feet deep in the lake's numerous bays. Soft plastics — 4-inch worms, creature baits, or crawfish imitations — cast to shallow cover (downed trees, emergent vegetation, dock pilings) produce strikes. Smallmouth bass also move shallow but prefer slightly deeper structure than largemouths; rocky points and the transition to deeper water are reliable.
Spring is also when panfish become active after winter. Bluegill and crappie move to shallow bays to spawn in late May and early June. Small jigs tipped with waxworms or live minnows, fished in 3 to 8 feet of water, will catch limits quickly if you find the right bay.
Summer: Deep Water and Night Fishing
By mid-June, walleye retreat to deeper structure and become harder to locate. The power plant discharge on the north shore becomes a focal point — the warm water attracts baitfish and walleye, especially at night. Fish the discharge area after dark with live bait or crankbaits that reach 15 to 25 feet. The main basin's deeper structure — humps, drop-offs, and the 40- to 60-foot zone — also holds walleye, but you'll need electronics to find them.
Bass remain catchable in summer but require patience. Early morning and late evening produce the most strikes. Fish deeper weed beds, submerged timber, and the edges of the main basin. Smallmouth bass often hold deeper than largemouths and respond well to jigging presentations in 20 to 40 feet of water.
Panfish slow in midsummer as water warms, but early morning trips to deeper bays or the main lake structure can still produce. Crappie in particular move to deeper water (15 to 25 feet) and suspend over structure; vertical jigging with live minnows is effective.
Fall: Second Peak for Walleye and Bass
September and October rival spring for walleye fishing. As water cools, fish move back to shallower structure and feed aggressively before winter. The same bays and shoreline zones that held fish in spring become productive again. Live bait, jigs, and crankbaits all work; focus on dawn and dusk, but fall walleye will bite throughout the day if you're on the right structure.
Bass also feed heavily in fall. Largemouths and smallmouths move to shallow bays and weed edges as vegetation begins to die back. Topwater lures, soft plastics, and crankbaits all produce. The bite can be fast and aggressive, especially in the first two hours after sunrise.
Panfish are active and fat heading into winter. Bluegill and crappie school in bays and along weed lines; small jigs and live bait will catch numbers of fish quickly.
Winter Ice Fishing
Pewaukee Lake typically freezes by late December and remains fishable through February. The power plant discharge area on the north shore stays open longer and concentrates fish, making it a popular winter destination — though crowds can be heavy on weekends. Walleye, panfish, and pike are the primary winter targets.
Set lines or tip-ups for walleye in 20 to 40 feet of water near the discharge; live minnows work best. For panfish, drill holes in 8 to 15 feet of water in bays and over shallow structure; small jigs tipped with waxworms or spikes produce steady action. Pike can be caught on tip-ups baited with larger minnows in 15 to 30 feet of water.
Check ice thickness before venturing out — the power plant discharge can create thin ice, so stay clear of that area. Bring a spud bar and test as you go.
Access, Regulations, and Practical Details
Public boat launches are located at Retzer Nature Center (on the south shore, off Retzer Road) and Pewaukee Park (on the east shore, off Maple Avenue). Both have parking and are maintained by Waukesha County Parks. Retzer Nature Center also offers shore fishing access. A Wisconsin fishing license is required for anyone 16 and older; licenses are sold online at the Wisconsin Department of Natural Resources website or at most bait and tackle shops in the area.
Daily limits: walleye (five fish, one over 15 inches), largemouth bass (five fish), smallmouth bass (five fish), northern pike (one fish over 24 inches), bluegill and other panfish (no daily limit). Possession limits are the same as daily limits. The lake is open year-round, including ice fishing season.
Bait and tackle shops near the lake include several in Pewaukee and Waukesha; most carry live shiners, chubs, crawfish, and standard lures. Water temperature varies by season and depth; check current conditions before fishing, especially in summer and winter when thermal patterns matter most.
Frequently Asked Questions
Can I fish from shore at Pewaukee Lake?
Yes. Retzer Nature Center has shore access on the south side. Some residential areas allow shore fishing, but much of the shoreline is private. Stick to public areas or ask permission before fishing from private property.
What's the best time of day to fish walleye at Pewaukee?
Dawn and dusk are most productive, especially in spring and fall. In summer, night fishing near the power plant discharge is often more reliable than daytime fishing. Winter ice fishing can be good throughout the day, though early morning and late afternoon often produce better.
Is the power plant discharge safe to fish?
The discharge area is fishable and often holds concentrations of fish, but stay clear of the actual discharge point and any posted hazard areas. The warm water can create thin ice in winter, so use caution and test ice thickness frequently.
Do I need a boat to fish Pewaukee Lake?
A boat is helpful for reaching deeper structure and the main basin, but shore fishing at Retzer Nature Center and ice fishing in winter are productive without one. Panfish can be caught from shore in bays during spring and fall.
What size lures and bait work best for bass at Pewaukee?
For largemouth bass, use 4-inch soft plastics, topwater lures, and crankbaits in shallow bays. Smallmouth bass respond to jigs (1/4 to 1/2 ounce), live crawfish, and deeper-diving crankbaits. Live shiners and chubs also work for both species.