Onion
A 35-acre lake near Maple Hill in Cook County — best known for panfish. Last surveyed 1986.
Fish Species (3)
Typical numbers · large fish
Gill-net survey · surveyed Aug 1986
Last surveyed 1986 — treat with caution
Catch rate: 12.0 per gill net · typical 2–15 for a lake like this
Survey History
| Date | Catch Rate | Avg Length | Avg Weight |
|---|---|---|---|
| Aug 7, 1986 | 12.00 | - | 0.19 lbs |
Gill-net survey · surveyed Aug 1986
Last surveyed 1986 — treat with caution
Catch rate: 1.0 per gill net · typical 1–5 for a lake like this
Survey History
| Date | Catch Rate | Avg Length | Avg Weight |
|---|---|---|---|
| Aug 7, 1986 | 1.00 | - | 0.20 lbs |
Other species in this lake (1)
Rough fish, bullheads, and baitfish recorded in DNR surveys — present in the lake, but not typical angling targets.
Above-normal numbers · average-size fish
Gill-net survey · surveyed Aug 1986
Last surveyed 1986 — treat with caution
Catch rate: 61.0 per gill net · typical 3–23 for a lake like this
Survey History
| Date | Catch Rate | Avg Length | Avg Weight |
|---|---|---|---|
| Aug 7, 1986 | 61.00 | - | 1.07 lbs |
Fishing Regulations
Statewide limits
Standard statewide Minnesota limits for the species in this lake.
Sunfish
20 combined total
Perch
20 daily and 40 in possession
More statewide rules (spearing, rough fish)
Bowfin, buffalo, carp, carpsuckers, freshwater drum, goldeneye, redhorse, and suckers
no limit
Biologist Notes
August 7, 1986WHITE SUCKERS AND YELLOW PERCH DOMINATE THIS LAKE. SEVERAL YEAR-CLASSES OF EACH ARE PRESENT, INDICA- TING REPRODUCTION AND NO WINTERKILL RECENTLY.
WHITE SUCKERS AND YELLOW PERCH DOMINATE THIS LAKE. SEVERAL YEAR-CLASSES OF EACH ARE PRESENT, INDICA- TING REPRODUCTION AND NO WINTERKILL RECENTLY.
Frequently Asked Questions
What fish can you catch in Onion?
Based on Minnesota DNR survey data, anglers target Yellow Perch in Onion. See the full species list above for catch rates, size structure, and quality scores.
Is there public access at Onion?
We don't have a confirmed public access point on record for Onion. Check the DNR LakeFinder page for current access details before you go.
How deep is Onion?
Onion has a maximum depth of 4 feet, per Minnesota DNR data.
When were the main sport fish in Onion last surveyed?
The most recent Minnesota DNR survey data for the main sport fish in Onion is from 1986. Surveys this old should be treated with some caution — fish populations change over time.
Does Onion have any invasive species?
No invasive species are on record for Onion in Minnesota DNR data. Always clean, drain, and dry your equipment to help keep it that way.
Are there special fishing regulations on Onion?
No — Onion has no lake-specific regulations in the 2026 Minnesota DNR regulations, so statewide Minnesota limits apply. The statewide perch limit is: 20 daily and 40 in possession. Verify current rules with the Minnesota DNR before keeping fish.
More lakes in Cook County
View allLake Details
- Surface Area
- 35.12 acres
- Max Depth
- 4 ft
- Shoreline
- 1.22 mi
- Public Access
- Not confirmed