Walleye Stocked · 8 plants · last 2023 Best: dawn, dusk, night Rock Lake fishing
Rock Lake fishing: not stocked since 2023. It was stocked with Walleye. Also recorded: Northern Pike, Largemouth Bass, Smallmouth Bass, Bluegill, Black Crappie, Yellow Perch, and 5 more. Species guides list dawn, dusk, and night for Walleye, Black Crappie, and Rock Bass, dawn, day, and dusk for Northern Pike, Bluegill, and Yellow Perch, and dawn and dusk for Largemouth Bass and Smallmouth Bass.
- Last stocked
- 2023
- Walleye
- Plants on record
- 8
- Since 2011
- Species stocked
- 1 (+11 also recorded)
- Average size
- 5.4 in
- Surface acres
- 1,361.1
Fish at Rock Lake
Walleye Stocked · 8 plants · last 2023 Best: dawn, dusk, night 
Northern Pike Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Northern Pike species guide
Largemouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Largemouth Bass species guide
Smallmouth Bass Confirmed present Best: dawn, dusk Best: dawn, dusk
Smallmouth Bass species guide
Bluegill Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Bluegill species guide
Black Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Black Crappie species guide
Yellow Perch Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Yellow Perch species guide
Pumpkinseed Confirmed present Best: dusk Best: dusk
Pumpkinseed species guide
Rock Bass Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Rock Bass species guide
Bowfin Confirmed present Best: day, night Best: day, night
Bowfin species guide
Longnose Gar Confirmed present Best: day Best: day
Longnose Gar species guide Slender Madtom Confirmed present
Rock Lake is a 1,365-acre lake in Southeast Wisconsin with a maximum depth of 60 feet. It is known to contain Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, and Walleye. The lake's water is moderately clear. (en.wikipedia.org, accessed September 22, 2026)(apps.dnr.wi.gov, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
How Rock Lake is stocked
About 168 reported fish per acre, the fewest of 4 lakes in Jefferson County with both a fish count and a surface area.
Fish stocked in 2011
68,550
Fish stocked in 2013
57,706
Fish stocked in 2015
19,564
Fish stocked in 2017
20,563
Fish stocked in 2019
20,587
Fish stocked in 2021
20,563
Fish stocked in 2023
20,946
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| 2023 | Walleye | 20,946 | 6.24 in | report |
| 2021 | Walleye | 20,563 | 6.8 in | report |
| 2019 | Walleye | 20,587 | 7.08 in | report |
| 2017 | Walleye | 20,563 | 6.36 in | report |
| 2015 | Walleye | 5,879 | 7.01 in | report |
| 2015 | Walleye | 13,685 | 7 in | report |
| 2013 | Walleye | 57,706 | 1.48 in | report |
| 2011 | Walleye | 68,550 | 1.39 in | report |
Access and facts
- Nearest town
- Town of Lake Mills, WI
- Facilities
- restrooms, dock
Launches: Rock Lake Park on County B (north; trailer lot across the road via a tunnel), Ferry Park (northwest), Elm Point (southwest), Sandy Beach (southeast; flush toilets, accessible docks) and Mill Pond (east). DNR's accessible fishing pier is on the Glacial Drumlin Trail at the south end.
Drafted by AI from the cited sources and checked before publishing.
Advisories, closures, regulations and water conditions change. Check the Wisconsin Department of Natural Resources before you go.
About Rock Lake
Part of the south western part of the figure eight is usually covered in tall aquatic vegetation that reach out of the water. (en.wikipedia.org, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
Nearest lakes
Common questions
What fish are at Rock Lake?
Fishing Rock Lake usually means Walleye. All 8 plants on record are Walleye. Walleye was last stocked 2023, averaging 5.4 in. Northern Pike, Largemouth Bass, Smallmouth Bass, and Bluegill, plus 7 more are recorded here outside the stocking reports.
When is Rock Lake stocked?
Not stocked since 2023. About 168 reported fish per acre, the fewest of 4 lakes in Jefferson County with both a fish count and a surface area. No plants recorded in 2012, 2014, 2016, 2018, 2020, and 2022.
How big are the fish stocked at Rock Lake?
Walleye stocked at Rock Lake average 5.4 in.
How do you get on Rock Lake?
The nearest town is Town of Lake Mills, WI. Facilities include restrooms and dock. Launches: Rock Lake Park on County B (north; trailer lot across the road via a tunnel), Ferry Park (northwest), Elm Point (southwest), Sandy Beach (southeast; flush toilets, accessible docks) and Mill Pond (east). DNR's accessible fishing pier is on the Glacial Drumlin Trail at the south end.
Which lakes near Rock Lake were stocked more recently?
Lake Kegonsa (18.1 mi) and Lake Waubesa (20.4 mi) were stocked more recently. Lake Kegonsa is also stocked with Walleye and Lake Waubesa is also stocked with Walleye.