Minnesota DNR fisheries surveys · latest August 22, 2016
Species recorded at O'Leary Lake
9 species on the Minnesota DNR list for this lake. A species on the list has been recorded here; it does not mean it is catchable today or in every part of the lake.
Stocking at O'Leary Lake
No stocking record for O'Leary Lake appears in the Minnesota DNR material on file. That is an absence in the published record, not a confirmation that the lake is unstocked — some waters are managed as naturally reproducing and never appear in a stocking list at all.
Survey results in full
Minnesota DNR's Standard Survey on August 22, 2016 caught 3.33 walleye per gill net at O'Leary Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows O'Leary Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 2016-08-22 (Standard Survey).
2 surveys on file · most recent 2016-08-22 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Pumpkinseed | 7.28 | 3 in 2016-08-22 | 0.04 lb |
| Northern Pike | 3.71 | 20–26 in 2016-08-22 | 2.62 lb |
| Yellow Perch | 3.65 | 3–6 in 2016-08-22 | 0.08 lb |
| Smallmouth Bass | 2.21 | 5–19 in 2016-08-22 | 1.85 lb |
| Golden Shiner | 1.67 |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Pumpkinseed
Northern Pike
Yellow Perch
Smallmouth Bass
From the 2016-08-22 survey
O'Leary Lake is a 202 acre class 5 lake located in Voyageurs National Park. This interior park lake is located approximately 10 miles north-northwest of the community of Crane Lake, Minnesota. O'Leary is accessed via a portage trail from Hammer Bay in the east end of Namakan Lake, and no boats are allowed to be…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for O'Leary Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — O'LearyFisheries Lake Survey · MN DNR LakeFinder
Common questions
What fish are in O'Leary Lake?
Minnesota DNR's Standard Survey on August 22, 2016 caught 3.33 walleye per gill net at O'Leary Lake. Minnesota DNR lists 9 species for the lake in total. Those are survey results, not a catch report: a net set on one date measures what was in that net.
When was O'Leary Lake last surveyed?
The most recent fisheries survey on file for O'Leary Lake is dated August 22, 2016. Survey intervals vary by lake and by species; a gap of several years between surveys is normal and does not mean the record is missing.
Is O'Leary Lake stocked?
No stocking record for O'Leary Lake appears in the Minnesota DNR material on file. That is not the same as a confirmed unstocked lake: it means no stocking document was published for it in the records this page draws on.
Do the water-quality readings tell me how O'Leary Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows O'Leary Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Before you eat what you catch
Water-quality readings are not a consumption advisory. Mercury and PCB advice for Minnesota waters comes from MDH, and it is issued per species and per size class: a lake with clear, low-nutrient water can still carry a meal limit on larger predator fish.
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