Minnesota DNR fisheries surveys · latest June 4, 2021
Upper Sucker Lake FishingAWater-quality grade A
Minnesota DNR surveys at Upper Sucker Lake average 4.49 northern pike per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated June 4, 2021. Length samples in the latest survey that recorded them ran 9–26 inches. In Cass County, Minnesota, Upper Sucker Lake carries an overall water-quality grade of A. Water clarity averages 10.8 feet of visibility. 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 Upper Sucker Lake
12 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 Upper Sucker Lake
No stocking record for Upper Sucker 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 surveys at Upper Sucker Lake average 4.49 northern pike per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated June 4, 2021. Length samples in the latest survey that recorded them ran 9–26 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Upper Sucker Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 2 years of monitoring is improving. 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: 2021-06-04 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Black Bullhead | 21.52 | 0.26 lb |
| Yellow Perch | 11.36 | 0.16 lb |
| Bluegill | 5.83 | 0.26 lb |
| Northern Pike | 4.49 | 1.4 lb |
| Largemouth Bass | 3.99 | 3.31 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.
Black Bullhead
Yellow Perch
Bluegill
Northern Pike
From the 2021-06-04 survey
Upper Sucker Lake is 113-acre lake is located approximately nine miles east of Cass Lake, Minnesota. The lake has 4.2 miles of shoreline and a maximum depth of 25 feet. There is a US Forest Service owned earthen boat access on the channel between Middle Sucker and Upper Sucker lakes. The access is suitable for small…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Upper Sucker Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Upper SuckerFisheries Lake Survey · MN DNR LakeFinder
Common questions
What fish are in Upper Sucker Lake?
Minnesota DNR surveys at Upper Sucker Lake average 4.49 northern pike per unit of sampling effort (CPUE) across 7 surveys. The most recent is a Standard Survey dated June 4, 2021. Length samples in the latest survey that recorded them ran 9–26 inches. Minnesota DNR lists 12 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 Upper Sucker Lake last surveyed?
The most recent fisheries survey on file for Upper Sucker Lake is dated June 4, 2021. 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 Upper Sucker Lake stocked?
No stocking record for Upper Sucker 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.
Does the water-quality grade tell me how Upper Sucker Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Upper Sucker Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 2 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.
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