Minnesota DNR fisheries surveys · latest June 9, 2025
Species recorded at Duck Lake
17 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 Duck 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
1 public boat landing is recorded on Duck Lake. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR's Standard Survey on June 9, 2025 caught 0.60 walleye per gill net at Duck Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Duck Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
13 surveys on file from MN DNR Fisheries. Most recent: 2025-06-09 (Standard Survey).
13 surveys on file · most recent 2025-06-09 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluntnose Minnow | 58.41 | ||
| Bluegill | 35.75 | 4–8 in 2025-06-09 | 0.2 lb |
| Black Bullhead | 29.75 | 7–12 in 2025-06-09 | 0.63 lb |
| Largemouth Bass | 18.07 | 6–20 in 2025-06-09 | 1.39 lb |
| White Crappie | 15.08 | 5–13 in 2025-06-09 | 0.3 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
Largemouth Bass
White Crappie
From the 2025-06-09 survey
Duck Lake is a 290-acre lake located on the north side of the city of Madison Lake in Blue Earth County. Duck Lake has a maximum depth of 25 feet. A county-maintained public access is located on the south end of the lake near the county park. Most of the shoreline has been altered by residential development and…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Duck Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — DuckFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — DuckFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — DuckPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Duck Lake?
Minnesota DNR's Standard Survey on June 9, 2025 caught 0.60 walleye per gill net at Duck Lake. Minnesota DNR lists 17 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 Duck Lake last surveyed?
The most recent fisheries survey on file for Duck Lake is dated June 9, 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 Duck Lake stocked?
Minnesota DNR publishes a stocking history for Duck 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 Duck Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Duck Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is stable. 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 Duck Lake
Top-rated places to stay near Duck Lake
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