Today on Koshkonong
· Tomorrow & the week: Lake Report or Premium →Best fishing times
All fishTimes by species available in Premium
Wind & weather
National Weather ServiceWhat Koshkonong is best for
DNR data
PerchPanfish, common · stocked7.9
BluegillPanfish, common6.9
CrappiePanfish, common6.9
WalleyePresent · stocked6.0
Northern pikePresent · stocked5.4
MuskyPresent4.4
LargemouthPresent4.4
SmallmouthPresent4.4How we rate
Start from how common the DNR says the fish is (abundant 7.5, common 6, present 3.5). Add 1 if the DNR stocked it in the last 5 years, 0.6 for walleye in two-story or complex lakes, and up to 0.9 for lake size. The DNR counts bluegill, perch and crappie together as panfish, so they share a score.
Depth map
Wisconsin DNRTap a map to zoom. Pinch or scroll to zoom in, drag to move.
Not for navigation. Old survey; depths and weed lines change.
Rules on this lake
DNR · checked 2026-10-07| Walleye | 18" min · 3 a dayOpen All Year | Open |
| Musky | 40" min · 1 a dayMay 2, 2026 to December 31, 2026 on open water | Open |
| Northern pike | 26" min · 2 a dayOpen All Year | Open |
| Bass | 14" min · 5 a dayOpen All Year | Open |
| Panfish | No size limit · 25 a dayOpen All Year | Open |
| Sturgeon | No fishing | Closed |
| Catfish | No size limit · 10 a dayOpen All Year | Open |
Tournaments here: Oct 10. Launches get busy. All tournaments
Launches & access
4 public- Access at End Of Bingham RdDirections
- Access at Wildlife Area - Vinnie Haha RdDirections
- Access Nr N Charley Bluff RdDirections
- AccessDirections
Stocking
DNR records| 2023 | 9,000 yellow perch large fingerling, 5" 434,037 walleye small fingerling, 1.32" 62,814 northern pike small fingerling, 2.17" |
| 2022 | 4,042 northern pike small fingerling, 5.8" 6,573 northern pike small fingerling, 3" |
| 2021 | 14,000 yellow perch yearling, 6" 359,871 walleye small fingerling, 1.64" 23,304 northern pike large fingerling, 8.02" 37,056 northern pike small fingerling, 3.63" |
| 2020 | 12,000 yellow perch large fingerling, 4" 55,182 northern pike small fingerling, 3.41" |
| 2019 | 512,925 walleye small fingerling, 1.29" 4,020 northern pike large fingerling, 9.4" 38,979 northern pike small fingerling, 4.2" 33,431 northern pike small fingerling, 2.16" |
The DNR has 88 fish surveys on file for this lake.
Before you go
DNRThis is health advice about eating fish, from the DNR. It is not how many you can catch or keep. Catch limits are in Rules.
Eat any amount Bluegill and Sunfish, Bullheads, Crappies, Inland Trout, Yellow Perch
Up to 1 meal a week Bass, Catfish, Pike, Walleye, All Other Species and Sizes
Up to 1 meal a month Muskies
Statewide advice; no lake-specific advisory. Stricter for women who may get pregnant and children under 15. DNR detailsCurly-Leaf Pondweed · Zebra Mussel
Drain all water, remove plants and animals, and never move live fish or bait to another lake.Ice on Koshkonong
Reports & estimateReviews
No reviews yetNear Koshkonong
Local dealsLocal bait shops, resorts and supper clubs can put a coupon here and on the printed sheet, free for a year. Add your business
Koshkonong board
Catches & reportsLakes near Koshkonong
Within 25 miles| Lake | Miles | Acres | Max depth |
|---|---|---|---|
| Rice LakeDane | 4 | 170 | 8 ft |
| Clear LakeRock | 5.1 | 82 | 20 ft |
| Red Cedar LakeJefferson | 7.3 | 359 | 6 ft |
| Lake RipleyJefferson | 9 | 418 | 44 ft |
| Hope LakeJefferson | 10.6 | 142 | 24 ft |
| Cravath LakeWalworth | 12 | 68 | 10 ft |
| Mud LakeJefferson | 12.1 | 93 | 22 ft |
| Tripp Lake (Trapp)Walworth | 12.8 | 113 | 8 ft |
Koshkonong questions
How deep is Lake Koshkonong?
Lake Koshkonong is 7 feet at its deepest, and 5 feet deep on average. It covers 10,595 acres.
What fish are in Lake Koshkonong?
The Wisconsin DNR lists panfish (common), musky (present), largemouth bass (present), smallmouth bass (present), northern pike (present), walleye (present) and catfish (present).
Where is the boat launch on Lake Koshkonong?
There are 4 public launches: Access at End Of Bingham Rd, Access at Wildlife Area - Vinnie Haha Rd, Access Nr N Charley Bluff Rd and Access.
Do I need a trout stamp to fish Lake Koshkonong?
A Wisconsin fishing license covers this lake. No trout or Great Lakes stamp needed here.
What is the walleye limit on Lake Koshkonong?
18" min · 3 a day. Season: Open All Year.
Is Lake Koshkonong stocked?
Yes. In 2023 the DNR and partners stocked 9,000 yellow perch (large fingerling), 434,037 walleye (small fingerling) and 62,814 northern pike (small fingerling).
Fish it longer
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Sources: Wisconsin DNR (lake facts, species, rules, stocking, consumption advice, survey map), National Weather Service (forecast). Sun and moon computed for the lake's location. Best times are a model of light and moon, not a promise. Checked 2026-10-07.