Minnesota DNR fisheries surveys · latest April 23, 2025
Long Lake FishingFWater-quality grade F
Minnesota DNR surveys at Long Lake average 34.73 walleye per unit of sampling effort (CPUE) across 18 surveys. The most recent is a Standard Survey dated April 23, 2025. Length samples in the latest survey that recorded them ran 7–27 inches. In Kandiyohi County, Minnesota, Long Lake carries an overall water-quality grade of F. Water clarity averages 5.0 feet of visibility, and there are 2 public boat landings. The survey figures on this page are Minnesota DNR's own; the water-quality grade comes from EPA Water Quality Portal samples. Neither is a forecast of today's bite.
Species recorded at Long Lake
16 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 Long 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
2 public boat landings are recorded on Long Lake. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR surveys at Long Lake average 34.73 walleye per unit of sampling effort (CPUE) across 18 surveys. The most recent is a Standard Survey dated April 23, 2025. Length samples in the latest survey that recorded them ran 7–27 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Long Lake F from EPA Water Quality Portal chemistry, and the water-quality trend over 4 years of monitoring is declining. 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: 2025-04-23 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Black Bullhead | 52.22 | 0.58 lb |
| Walleye | 34.73 | 1.7 lb |
| Largemouth Bass | 23.17 | 2.35 lb |
| Bluegill | 19.65 | 0.23 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE means more abundant in standardized sampling. This 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.
Black Bullhead
Walleye
Largemouth Bass
Bluegill
From the 2025-04-23 survey
A standard survey was conducted on Long Lake during late June of 2025. A targeted survey is generally used for sampling a specific kind of fish or time of year (i.e. spawning season, fall season, etc.) unlike a standard survey which samples a wider range of fish species during the summer months using standard…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Long Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — LongFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — LongFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — LongPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Long Lake?
Minnesota DNR surveys at Long Lake average 34.73 walleye per unit of sampling effort (CPUE) across 18 surveys. The most recent is a Standard Survey dated April 23, 2025. Length samples in the latest survey that recorded them ran 7–27 inches. Minnesota DNR lists 16 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 Long Lake last surveyed?
The most recent fisheries survey on file for Long Lake is dated April 23, 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 Long Lake stocked?
Minnesota DNR publishes a stocking history for Long 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.
Does the water-quality grade tell me how Long Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Long Lake F from EPA Water Quality Portal chemistry, and the water-quality trend over 4 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
A water-quality grade is 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 can grade well and still carry a meal limit on larger predator fish.
Where to stay near Long Lake
Top-rated places to stay near Long Lake
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