Minnesota DNR fisheries surveys · latest August 7, 2023
Dumbbell Lake FishingAWater-quality grade A
Minnesota DNR surveys at Dumbbell Lake average 8.02 walleye per unit of sampling effort (CPUE) across 22 surveys. The most recent is a Standard Survey dated August 7, 2023. Length samples in the latest survey that recorded them ran 6–27 inches. In Lake County, Minnesota, Dumbbell Lake carries an overall water-quality grade of A. Water clarity averages 14.8 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 Dumbbell Lake
6 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 Dumbbell 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 Dumbbell 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 Dumbbell Lake average 8.02 walleye per unit of sampling effort (CPUE) across 22 surveys. The most recent is a Standard Survey dated August 7, 2023. Length samples in the latest survey that recorded them ran 6–27 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Dumbbell Lake A from EPA Water Quality Portal chemistry, 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
22 surveys on file from MN DNR Fisheries. Most recent: 2023-08-07 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Yellow Perch | 12.56 | 0.12 lb |
| Walleye | 8.02 | 1.53 lb |
| White Sucker | 7.48 | 0.9 lb |
| Rock Bass | 4.49 | 0.23 lb |
| Smallmouth Bass | 2.91 | 0.31 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.
Yellow Perch
Walleye
White Sucker
Rock Bass
From the 2023-08-07 survey
Dumbbell Lake is in Lake County about six miles east of Isabella and within the Superior National Forest. There is a public access with concrete log boat ramp and dock with parking for several trailer rigs located on Forest Service Road 172. There is also a picnic area with airplane dock and fishing pier located…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Dumbbell Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — DumbbellFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Dumbbell (0982)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — DumbbellFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — DumbbellPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Dumbbell Lake?
Minnesota DNR surveys at Dumbbell Lake average 8.02 walleye per unit of sampling effort (CPUE) across 22 surveys. The most recent is a Standard Survey dated August 7, 2023. Length samples in the latest survey that recorded them ran 6–27 inches. Minnesota DNR lists 6 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 Dumbbell Lake last surveyed?
The most recent fisheries survey on file for Dumbbell Lake is dated August 7, 2023. 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 Dumbbell Lake stocked?
Minnesota DNR publishes a stocking history for Dumbbell 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 Dumbbell Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Dumbbell Lake A from EPA Water Quality Portal chemistry, 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 Dumbbell Lake
Top-rated places to stay near Dumbbell Lake
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