Minnesota DNR fisheries surveys · latest August 25, 2025
Species recorded at Osakis Lake
18 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 Osakis Lake
Minnesota DNR publishes a stocking history for this lake — which species went in, how many, and in which years. Read the years: a lake stocked in one year is not necessarily stocked in the next.
Getting on the water
3 public boat landings are recorded on Osakis Lake. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR's Targeted Survey on August 25, 2025 caught 6.83 walleye per gill net at Osakis Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Osakis Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
18 surveys on file from MN DNR Fisheries. Most recent: 2025-08-25 (Targeted Survey).
18 surveys on file · most recent 2025-08-25 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Yellow Perch | 22.89 | 5–8 in 2025-08-25 | 0.14 lb |
| Green Sunfish | 22.70 | 5 in 2018-08-13 | 0.14 lb |
| Bluegill | 18.50 | 3–9 in 2025-08-25 | 0.19 lb |
| Yellow Bullhead | 12.55 | 8–15 in 2025-08-25 | 0.91 lb |
| Largemouth Bass | 11.25 | 5–18 in 2025-08-25 | 0.99 lb |
| Spottail Shiner | 10.43 |
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.
Yellow Perch
Green Sunfish
Bluegill
Yellow Bullhead
From the 2025-08-25 survey
Lake Osakis (6,389 acres) is a nutrient-rich, highly productive basin located in both Douglas and Todd counties. Due to high nutrient levels, water quality can be seasonally impaired with periodic algal blooms and low water clarity ( In August 2025 a targeted fish survey was completed to gain current information on…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Osakis Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — OsakisFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Osakis (1077)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — OsakisFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — OsakisPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Osakis Lake?
Minnesota DNR's Targeted Survey on August 25, 2025 caught 6.83 walleye per gill net at Osakis Lake. Minnesota DNR lists 18 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 Osakis Lake last surveyed?
The most recent fisheries survey on file for Osakis Lake is dated August 25, 2025. 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 Osakis Lake stocked?
Minnesota DNR publishes a stocking history for Osakis Lake. It records which species were released, in what numbers and in which years — the source documents are linked further down this page. A lake can be stocked in some years and not others, so read the years rather than assuming an annual release.
Do the water-quality readings tell me how Osakis Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Osakis Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. 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.
Where to stay near Osakis Lake
Top-rated places to stay near Osakis Lake
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