Minnesota DNR fisheries surveys · latest August 8, 2018
Species recorded at North Union Lake
13 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 North Union Lake
No stocking record for North Union 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 8, 2018 caught 1.00 walleye per gill net at North Union Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows North Union Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
7 surveys on file from MN DNR Fisheries. Most recent: 2018-08-08 (Standard Survey).
7 surveys on file · most recent 2018-08-08 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 21.40 | 4–8 in 2018-08-08 | 0.2 lb |
| Golden Shiner | 15.12 | ||
| Black Bullhead | 8.12 | 11–13 in 2002-08-05 | 1 lb |
| Yellow Bullhead | 7.77 | 8–13 in 2018-08-08 | 0.67 lb |
| Pumpkinseed | 5.98 | 4–8 in 2018-08-08 | 0.29 lb |
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.
Bluegill
Black Bullhead
Yellow Bullhead
Pumpkinseed
From the 2018-08-08 survey
North Union, Stony, and Lottie (Taylor) lakes form a chain of lakes between Brophy and Cowdry Lakes in Douglas County. North Union Lake is the upper or first lake in this chain of interconnected lakes. Brophy Lake discharges into North Union. North Union outlets to Stony Lake. None of these three small basins have…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for North Union Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — North UnionFisheries Lake Survey · MN DNR LakeFinder
Common questions
What fish are in North Union Lake?
Minnesota DNR's Standard Survey on August 8, 2018 caught 1.00 walleye per gill net at North Union Lake. Minnesota DNR lists 13 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 North Union Lake last surveyed?
The most recent fisheries survey on file for North Union Lake is dated August 8, 2018. 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 North Union Lake stocked?
No stocking record for North Union 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 North Union Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows North Union Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is declining. 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 North Union Lake
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