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Castle Rock Lake Fishing Report

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

Castle Rock Lake: a 13,955-acre Wisconsin River flowage below Petenwell, with walleye, panfish and Buckhorn State Park's peninsula on its shore.

3/5
Fair. Fish the windows.A steady pattern: dawn and dusk carry the day.
Water temp
~55 F est.
Air / High
74 / 74 F
Wind
S 10 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.

Castle Rock Lake feels the season turning: shorter days, grouping fish. Today brings clear skies, wind S around 10 mph, steady pressure near 1022 hPa and a high of 74. Water sits around 55 F for the season (estimated). With the waxing gibbous, the solunar majors run 9:35 AM-11:35 AM and 10:05 PM-12:05 AM: 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.

Catfish (blue, channel)Good

In spring after ice-out, Iowa finds channel cats feeding on winter-killed shad on the shallow, warmer mudflats at the upper ends of reservoirs; cut bait on the bottom works there.

Tomorrow: Similar at 73 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 temp74 F
High / Low74 / 50 F
WindS 10-14 mph
Pressure1022.2 hPa, steady
Sky / Rain1% cloud, 2%
Sunrise / Sunset07:24 / 18:03
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 Castle Rock Lake this week

The best day on Castle Rock Lake this week looks like Saturday Oct 24, at 4 out of 5, against 3 today.

Best day this week: Saturday, Oct 24 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
9:35 AM-11:35 AM and 10:05 PM-12:05 AM
Minor period
3:58 AM-4:58 AM
Sun
07:24 to 18:03
Moon
Waxing Gibbous, 91% lit
Sky and wind
Overcast, 10 mph
Rain chance
2%

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

Species guide

The species that matter on Castle Rock 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.

Catfish (blue, channel) illustration

Catfish (blue, channel)

Year-round, best at dusk and after dark

Three big catfish share most of the country's rivers and reservoirs: the channel catfish, the most widespread; the blue catfish, the largest; and the flathead, which hunts live fish. All feed mostly on or near the bottom. In spring after ice-out, Iowa finds channel cats feeding on winter-killed shad on the shallow, warmer mudflats at the upper ends of reservoirs; cut bait on the bottom works there.

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 Castle Rock 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
Catfish (blue, channel)
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 Castle Rock 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 75 F, wind to 5 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 74 F, wind to 8 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 70 F, wind to 7 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. The DNR's Castle Rock Lake rules (read 2026-10-06): walleye, sauger and hybrids 15-inch minimum, none from 20 to 28 inches, 1 over 28, 3 a day; largemouth and smallmouth 14 inches, 5 a day; northern pike 32 inches, 1; muskellunge 50 inches, 1, open water May 2–Dec 31, 2026; catfish 10; panfish 25; lake sturgeon closed. Hook-and-line fishing is open all year except for muskellunge, sturgeon and trout.

Access

11 public boat landings and three public beaches (DNR lake page); Buckhorn State Park boat launch with accessible boarding pier and fishing piers.

About this water

A 13,955-acre Wisconsin River flowage, maximum depth 35 ft, in Adams and Juneau counties, Wisconsin, downstream of Petenwell Lake.

Fishing Castle Rock Lake: the full guide

The flowage

The Wisconsin DNR's lake page gives Castle Rock Lake 13,955 acres in Adams and Juneau counties and a maximum depth of 35 feet. It counts 11 public boat landings and three public beaches, and lists panfish and walleye as common, with muskellunge, largemouth and smallmouth bass, northern pike, lake sturgeon and catfish present.

Walleye outlook

In the DNR's fall 2025 recruitment survey of the Wisconsin River flowages, Castle Rock's catch of young-of-the-year walleye had been below average for three years, but survival of older juveniles was better than average in 2024. The DNR expects the 2022 year class, sampled at 103 young walleye per mile, to recruit into the harvestable population in 2026.

Buckhorn State Park

Buckhorn State Park and two adjacent state wildlife areas cover more than 8,000 acres on a peninsula in the Castle Rock Flowage. The park has a boat launch with an accessible boarding pier, fishing piers, a canoe trail and campsites, including cart-in sites.

Common questions

Is Castle Rock good for walleye?

The DNR lists walleye as common. Its 2025 survey found three years of below-average young-of-the-year catches, but a 2022 year class that should reach harvestable size in 2026.

What are the walleye rules?

A 15-inch minimum, no walleye from 20 to 28 inches, only one over 28, and 3 a day in total, under the DNR's rules for Castle Rock Lake.

Where can I fish from shore?

Buckhorn State Park, on a peninsula in the flowage, has fishing piers and an accessible boarding pier at its boat launch.

Is fishing good at Castle Rock 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

Petenwell Lake14 miLake Wisconsin35 miLake Puckaway39 miKickapoo River39 miBig Green Lake50 miLake Mendota59 mi

Where this page's numbers come from

Weather and pressure
Open-Meteo forecast model
Queried at 43.8680, -89.9655 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 6, 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 6, 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.