Minnesota DNR fisheries surveys · latest July 29, 2024
Lake Jefferson FishingNRNot rated for water quality
Minnesota DNR surveys at Lake Jefferson average 18.16 black crappie per unit of sampling effort (CPUE) across 12 surveys. The most recent is a Standard Survey dated July 29, 2024. Length samples in the latest survey that recorded them ran 4–12 inches. In Le Sueur County, Minnesota, Lake Jefferson has no letter grade — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Water clarity averages 4.0 feet of visibility, and there is one public boat landing. 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 Lake Jefferson
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 Lake Jefferson
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 Lake Jefferson. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR surveys at Lake Jefferson average 18.16 black crappie per unit of sampling effort (CPUE) across 12 surveys. The most recent is a Standard Survey dated July 29, 2024. Length samples in the latest survey that recorded them ran 4–12 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Lake Jefferson — official chemistry is on file, not a letter, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
12 surveys on file from MN DNR Fisheries. Most recent: 2024-07-29 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Black Bullhead | 60.68 | 0.64 lb |
| Black Crappie | 18.16 | 0.22 lb |
| Yellow Perch | 18.12 | 0.15 lb |
| Bluegill | 17.50 | 0.17 lb |
| Common Carp | 6.49 | 3.47 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
Black Crappie
Yellow Perch
Bluegill
From the 2024-07-29 survey
East Jefferson Lake is a 700-acre lake located approximately 4.5 miles southeast of the town of Cleveland in Le Sueur County. A DNR-maintained public access is located on the east side of the lake off Beaver Dam Road. The maximum depth is 37 feet with 48% of the lake less than 15 feet deep. East Jefferson Lake has…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lake Jefferson. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — East JeffersonFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — East JeffersonFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — East JeffersonPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Lake Jefferson?
Minnesota DNR surveys at Lake Jefferson average 18.16 black crappie per unit of sampling effort (CPUE) across 12 surveys. The most recent is a Standard Survey dated July 29, 2024. Length samples in the latest survey that recorded them ran 4–12 inches. 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 Lake Jefferson last surveyed?
The most recent fisheries survey on file for Lake Jefferson is dated July 29, 2024. 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 Lake Jefferson stocked?
Minnesota DNR publishes a stocking history for Lake Jefferson. 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 Lake Jefferson fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Lake Jefferson — official chemistry is on file, not a letter, and the water-quality trend over 6 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
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 Lake Jefferson
Top-rated places to stay near Lake Jefferson
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