Muskellunge Stocked · 11 plants · last 2025 Best: dawn, dusk Twin Valley Lake fishing
Twin Valley Lake fishing is stocked with Largemouth Bass, Walleye, and Muskellunge on a reservoir. Also recorded: Bluegill, Yellow Perch, Black Crappie, Pumpkinseed, Green Sunfish, Black Bullhead, and 1 more. It is stocked about 1.6 times a year since 2010. Species guides list dawn and dusk for Largemouth Bass and Muskellunge, dawn, dusk, and night for Walleye and Black Crappie, and dawn, day, and dusk for Bluegill and Yellow Perch.
- Last stocked
- 2025
- Walleye
- Plants on record
- 26
- Since 2010
- Species stocked
- 3 (+7 also recorded)
- Average size
- 7.6 in
- Surface acres
- 139.6
Fish at Twin Valley Lake
Muskellunge Stocked · 11 plants · last 2025 Best: dawn, dusk 
Walleye Stocked · 10 plants · last 2025 Best: dawn, dusk, night 
Largemouth Bass Stocked · 5 plants · last 2014 Best: dawn, dusk 
Bluegill Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Bluegill species guide
Yellow Perch Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Yellow Perch species guide
Black Crappie Confirmed present Best: dawn, dusk, night Best: dawn, dusk, night
Black Crappie species guide
Pumpkinseed Confirmed present Best: dusk Best: dusk
Pumpkinseed species guide Green Sunfish Confirmed present
Black Bullhead Confirmed present Best: dusk, night Best: dusk, night
Black Bullhead species guide
Brown Bullhead Confirmed present Best: dusk, night Best: dusk, night
Brown Bullhead species guideHow Twin Valley Lake is stocked
About 982 reported fish per acre, 3rd most of 5 lakes in Iowa County with both a fish count and a surface area.
Fish stocked in 2010
2,500
Fish stocked in 2011
99,870
Fish stocked in 2012
14,950
Fish stocked in 2013
7,625
Fish stocked in 2014
3,943
Fish stocked in 2015
1,507
Fish stocked in 2016
151
Fish stocked in 2017
1,359
Fish stocked in 2018
97
Fish stocked in 2019
1,359
Fish stocked in 2020
400
Fish stocked in 2021
1,631
Fish stocked in 2023
135
Fish stocked in 2025
1,494
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| 2025 | Walleye | 1,359 | 6.5 in | report |
| 2025 | Muskellunge | 135 | 10.75 in | report |
| 2023 | Muskellunge | 135 | 11 in | report |
| 2021 | Walleye | 1,483 | 7 in | report |
| 2021 | Muskellunge | 148 | 12 in | report |
| 2020 | Walleye | 400 | 7 in | report |
| 2019 | Walleye | 1,359 | 6.2 in | report |
| 2018 | Muskellunge | 97 | 12.2 in | report |
| 2017 | Walleye | 1,359 | 3.4 in | report |
| 2016 | Muskellunge | 151 | 10.8 in | report |
| 2015 | Muskellunge | 148 | 11.8 in | report |
| 2015 | Walleye | 1,359 | 7 in | report |
| 2014 | Largemouth Bass | 3,795 | 3.2 in | report |
| 2014 | Muskellunge | 148 | 9.5 in | report |
| 2013 | Walleye | 1,520 | 6.6 in | report |
| 2013 | Muskellunge | 158 | 11.35 in | report |
| 2013 | Largemouth Bass | 5,947 | 3 in | report |
| 2012 | Muskellunge | 150 | 9.6 in | report |
| 2012 | Largemouth Bass | 14,800 | 2.45 in | report |
| 2011 | Walleye | 94,400 | 0.4 in | report |
| 2011 | Largemouth Bass | 3,800 | 3.3 in | report |
| 2011 | Walleye | 1,520 | 7.46 in | report |
| 2011 | Muskellunge | 150 | 10 in | report |
| 2010 | Muskellunge | 150 | 12.9 in | report |
| 2010 | Walleye | 1,530 | 8 in | report |
| 2010 | Largemouth Bass | 820 | 3.9 in | report |
Access and facts
- Water type
- reservoir
- Nearest town
- Dodgeville, WI
- Facilities
- restrooms, dock
In Gov. Dodge State Park: a three-lane concrete-plank ramp with an ADA-accessible boarding dock, vault toilets, picnic tables and a grill; a state park vehicle sticker is required. Parkland surrounds the lake, giving many shore-fishing spots, and there is a public beach.
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 Twin Valley Lake
Anglers should be aware of aquatic invasive species in Twin Valley Lake, which include the Chinese Mystery Snail, Curly-Leaf Pondweed, and Eurasian Water-Milfoil. (apps.dnr.wi.gov, accessed September 22, 2026)
Drafted by AI from the cited sources and checked before publishing.
Nearest lakes
Public land at Twin Valley Lake
Twin Valley Lake is inside Governor Dodge State Park.
Boundaries from Public Lands DB, part of the same network.
Common questions
What fish are at Twin Valley Lake?
Fishing Twin Valley Lake usually means Muskellunge: Muskellunge accounts for 11 of 26 plants on record, ahead of Walleye and one more. Muskellunge was last stocked 2025, averaging 11.1 in. Walleye was last stocked 2025, averaging 6 in. Largemouth Bass was last stocked 2014, averaging 3.2 in. Bluegill, Yellow Perch, Black Crappie, and Pumpkinseed, plus 3 more are recorded here outside the stocking reports.
When is Twin Valley Lake stocked?
Last stocked 2025. It is stocked about 1.6 times a year since 2010. About 982 reported fish per acre, 3rd most of 5 lakes in Iowa County with both a fish count and a surface area. No plants recorded in 2022 and 2024.
How big are the fish stocked at Twin Valley Lake?
Stocked fish average 7.6 in. Muskellunge average 11.1 in. Walleye average 6 in. Largemouth Bass average 3.2 in.
How do you get on Twin Valley Lake?
The nearest town is Dodgeville, WI. Facilities include restrooms and dock. In Gov. Dodge State Park: a three-lane concrete-plank ramp with an ADA-accessible boarding dock, vault toilets, picnic tables and a grill; a state park vehicle sticker is required. Parkland surrounds the lake, giving many shore-fishing spots, and there is a public beach.