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Delavan Lake Fishing Report

Updated Fri, Oct 23, 2026 from live gauge and weather data

Delavan Lake: a 1,906-acre Walworth County lake rebuilt in a long rehabilitation, now under 18-inch limits for walleye and bass.

3/5
Fair. Fish the windows.A steady pattern: dawn and dusk carry the day.
Water temp
~55 F est.
Air / High
69 / 69 F
Wind
SE 6 mph

Sources: Open-Meteo, solunar calculated for these coordinates.

Satellite view
Friday
23
October 2026

Today's Fishing Report

Generated this morning from live readings: gauge, weather model, sun and moon. A fresh report is published here every morning.

3/5Fair. Fish the windows.A steady pattern: dawn and dusk carry the day.

Delavan Lake is in transition: bait on the move and predators following. Today brings clear skies, wind SE around 6 mph, steady pressure near 1024 hPa and a high of 69. Water sits around 55 F for the season (estimated). With the waxing gibbous, the solunar majors run 9:29 AM-11:29 AM and 9:59 PM-11:59 PM: the windows to build the day around.

The plan, species by species

MuskellungeExcellent

This band covers the spring spawn, which in Wisconsin runs at 49-60Β°F; spawning muskies eat little and rarely chase lures, Wisconsin DNR says. After the spawn, and again as fall water cools, work large lures along weed edges and structure.

WalleyeGood

Spring: post-spawn fish scatter and can be slow for a couple of weeks. Fall: one of the best windows, with minnows on jigs and three-way rigs as the water cools toward ice-up.

Smallmouth bassGood

Spring pre-spawn and fall: Iowa DNR notes the larger bass come up to shallow structure, where a shallow-running minnow bait or a spinnerbait just under the surface works.

Northern pikeGood

The best band for pike: right after ice-out they move into flooded vegetated shallows to spawn, and they feed actively again as the water cools in fall.

Largemouth bassGood

In spring, pre-spawn bass push shallow as the water climbs through the mid-50s; in fall they feed actively until the water cools into the low 50s, then drop back toward deeper structure.

Tomorrow: Similar at 68 F. The solunar majors shift about 50 minutes later.Next report: Sat, Oct 24, 6:30 AMHow this report is made β†’

Before you go

Wisconsin requires a fishing licence from age 16, from $20.00 for residents. What a Wisconsin licence costs and where to buy it β†’

Chasing walleye here? Check the size and bag limits with WI DNR before you keep anything. The season dates for Wisconsin, read off the agency, are on the Wisconsin seasons page.

Water and weather

Live readings.

No live gauge on this water

Conditions here are modeled from weather, season and the nearest stations. Water readings appear when a USGS gauge is available.

304050607080JanMarMayJulSepNovOct, ~55 F now

Right now

Latest readings

Air temp69 F
High / Low69 / 45 F
WindSE 6-8 mph
Pressure1023.8 hPa, steady
Sky / Rain0% cloud, 0%
Sunrise / Sunset07:17 / 17:59
MoonWaxing Gibbous, 91%
Water temp (seasonal)~55 F est.

Bite planner

Hour-by-hour bite forecast for today. Tap a bar to see why.

5 AM8 AM11 AM2 PM5 PM8 PMsunrisesunsetPRIMEPRIME

Which day to fish Delavan Lake this week

The best day on Delavan Lake this week looks like Monday Oct 26, at 4 out of 5, against 3 today.

Best day this week: Monday, Oct 26 β€” good at 4/5, falling pressure, usually the best window of a week.

Today, Oct 23 β€” Fair

A steady pattern: dawn and dusk carry the day.

Solunar majors
9:29 AM-11:29 AM and 9:59 PM-11:59 PM
Minor period
3:52 AM-4:52 AM
Sun
07:17 to 17:59
Moon
Waxing Gibbous, 91% lit
Sky and wind
Overcast, 8 mph
Rain chance
0%

Forecast-based scores, less reliable further out: how the score is built.

Species guide

The species that matter on Delavan Lake: seasons, structure and how to fish each one. Today's ratings live in the report above.

Walleye illustration

Walleye

Best: spring and late fall, around dawn, dusk and night

A cool-water perch of large lakes, reservoirs and rivers whose reflective eyes are built for low light, so it feeds most at night and in murky water. The Missouri Department of Conservation ranks it among the continent's most important freshwater game fish. Spring: post-spawn fish scatter and can be slow for a couple of weeks. Fall: one of the best windows, with minnows on jigs and three-way rigs as the water cools toward ice-up.

Smallmouth bass illustration

Smallmouth bass

Best: spring and fall, when bigger fish come shallow

A bronze-brown black bass of clear, cool streams and rocky lakes, with dark vertical bars instead of a side stripe. Michigan DNR says its southeastern coast, from Port Huron to Lake Erie, is known nationally for both the size and the number of its smallmouth. Spring pre-spawn and fall: Iowa DNR notes the larger bass come up to shallow structure, where a shallow-running minnow bait or a spinnerbait just under the surface works.

Northern pike illustration

Northern pike

Best: cool water, from ice-out through spring, in fall and under the ice

A long, duck-billed predator of weedy lakes, slow rivers and backwaters that ambushes fish from vegetation. Wisconsin DNR points out that, unlike most of the state's common game fish, pike do their best feeding in cool water. The best band for pike: right after ice-out they move into flooded vegetated shallows to spawn, and they feed actively again as the water cools in fall.

Largemouth bass illustration

Largemouth bass

Best: the spring pre-spawn and the fall feed

A warm-water sunfish of lakes, reservoirs, ponds and slow river backwaters that holds tight to cover: weeds, logs, rock ledges and docks. In Texas, TPWD surveys rank it "by far" the freshwater fish anglers most want to catch. In spring, pre-spawn bass push shallow as the water climbs through the mid-50s; in fall they feed actively until the water cools into the low 50s, then drop back toward deeper structure.

Muskellunge illustration

Muskellunge

Fished from late spring into late fall where seasons allow

Muskellunge are solitary, fish-eating ambush predators of the pike family, holding in weed beds and other cover in lakes and rivers of the Great Lakes, upper Mississippi and Ohio basins. This band covers the spring spawn, which in Wisconsin runs at 49-60Β°F; spawning muskies eat little and rarely chase lures, Wisconsin DNR says. After the spawn, and again as fall water cools, work large lures along weed edges and structure.

When to come: the Delavan Lake calendar

Activity by species and month, and how the water warms through the year. Tap any cell.

Species activity by month

1 = slow, 5 = peak. Current month highlighted.

J
F
M
A
M
J
J
A
S
O
N
D
Walleye
Smallmouth bass
Northern pike
Largemouth bass
Muskellunge
SlowPeak

Water temperature through the year

Typical surface temperature for this water type; today is around 55 F (estimated, not a reading).

304050607080JanMarMayJulSepNovOct, ~55 F now

Angler reports

Real reports from real anglers, reviewed before publishing. The water log below tracks each day automatically.

No angler reports yet this weekBe the first: your report helps every angler who checks Delavan Lake today, and we feature the best catch of the week.

Water log, last days

Auto-logged from live data
Thu, Oct 22

3/5 Fair. Fish the windows. A steady pattern: dawn and dusk carry the day. Muskellunge led the card at excellent. High of 70 F, wind to 6 mph.

Wed, Oct 21

4/5 Good. Solid day ahead. Stable-to-falling pressure and workable wind line things up. Walleye led the card at excellent. High of 70 F, wind to 7 mph.

Tue, Oct 20

4/5 Good. Solid day ahead. Stable-to-falling pressure and workable wind line things up. Walleye led the card at excellent. High of 66 F, wind to 6 mph.

Where roughly, what depth, what bait. Skip anything you want to keep secret.
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Before you go

License

Wisconsin requires a valid fishing license for adults. Buy online from the state agency; one-day options exist for visitors.

Regulations

Wisconsin fishing license. Delavan Lake rules (WDNR, 2026-27): walleye 18-inch minimum, 3 a day, May 2, 2026-March 7, 2027; largemouth and smallmouth bass 18-inch minimum, 1 a day in the same season, with catch-and-release open year-round; musky 40-inch minimum, 1 a day, May 2-Dec. 31, 2026; northern pike 32-inch minimum, 1 a day; panfish 25 a day; motor trolling with up to 3 hooks, baits or lures per angler.

Access

Four public boat landings and a public beach (WDNR lake page).

About this water

A 1,906-acre lake, 52 feet deep, in the Town of Delavan, Walworth County, Wisconsin.

Fishing Delavan Lake: the full guide

The lake

Wisconsin DNR lists Delavan Lake at 1,906 acres and 52 feet at its deepest, with moderately clear water, four public boat landings and a public beach. Panfish are abundant, and musky, largemouth and smallmouth bass, northern pike and walleye are present.

A rehabilitation, and its limits

A USGS study describes a three-part plan to move the lake from a hypereutrophic to a mesotrophic state: cut phosphorus from the watershed, treat lake sediments with alum and remove carp, and rebuild the fishery by removing carp and bigmouth buffalo and adding predator fish. The fishery work ended most of the blue-green algae blooms and poor clarity, but USGS found extensive weed growth and filamentous algae afterward and warned that the clearer water may not last without lower phosphorus loading.

Common questions

What are the walleye and bass limits on Delavan?

Walleye: 18-inch minimum and 3 a day; largemouth and smallmouth bass: 18-inch minimum and 1 a day, both open May 2, 2026 to March 7, 2027. Bass catch-and-release is open all year.

Does Delavan Lake hold muskies?

WDNR lists musky as present. The 2026 rule is a 40-inch minimum and 1 a day, open water from May 2 to December 31.

Did the rehabilitation work?

Partly. USGS found that removing carp and adding predators cleared the water and ended most algae blooms, while phosphorus levels returned close to where they were before treatment.

Is fishing good at Delavan Lake right now?

Check the daily report at the top of this page: it is regenerated every morning from live data. Today's read: Fair. Fish the windows. A steady pattern: dawn and dusk carry the day.

Nearby waters

Lake Geneva7 miFox Chain O’Lakes26 miFox Lake27 miWind Lake28 miFox River35 miPewaukee Lake36 mi

Where this page's numbers come from

Weather and pressure
Open-Meteo forecast model
Queried at 42.6088, -88.6170 in this water's own timezone. A model, not an observation.
Moon and solunar windows
Calculated on this site
Astronomical calculation from these coordinates and the date, not a third-party feed. How much weight it deserves.
Pages checked
The facts in the written guide were checked against these pages, from the agencies and operators that manage the water, on October 8, 2026. Anything we could not verify was taken out.
The written guide on this page
Pablo Ruiz Quintero
How this page was made. The daily report is computed by our scoring engine from live readings; nobody types it. The written text was drafted with AI assistance from the official pages listed above, and its facts were checked against those pages by automated verification on October 8, 2026; anything that could not be verified was taken out. Pablo Ruiz Quintero sets every guideline, the data-verification system and the minimum standards a page must meet to be published, reviews page structure and approves what goes live; the responsibility is his, and the AI carries out the work. We work this way because it is how one person can keep every page current with named sources. Errors are published in the verification log; the full policy is in the editorial policy.

Readings refresh on a 30-minute window. The full method, with every figure and its source, is on how our reports are made. Something wrong here? Tell us and it goes in the log with the date.