Minnesota DNR fisheries surveys · latest July 25, 2022
Wellner-Hageman Reservoir FishingFWater-quality grade F
Minnesota DNR surveys at Wellner-Hageman Reservoir average 1.22 walleye per unit of sampling effort (CPUE) across 6 surveys. The most recent is a Standard Survey dated July 25, 2022. Length samples in the latest survey that recorded them ran 17–26 inches. In Brown County, Minnesota, Wellner-Hageman Reservoir carries an overall water-quality grade of F. Water clarity averages 3.7 feet of visibility, and the lake has public access. 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 Wellner-Hageman Reservoir
9 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 Wellner-Hageman Reservoir
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
Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR surveys at Wellner-Hageman Reservoir average 1.22 walleye per unit of sampling effort (CPUE) across 6 surveys. The most recent is a Standard Survey dated July 25, 2022. Length samples in the latest survey that recorded them ran 17–26 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Wellner-Hageman Reservoir 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
6 surveys on file from MN DNR Fisheries. Most recent: 2022-07-25 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Yellow Perch | 52.57 | 0.14 lb |
| Black Bullhead | 47.37 | 0.37 lb |
| Black Crappie | 14.80 | 0.26 lb |
| Bluegill | 14.02 | 0.25 lb |
| White Sucker | 2.85 | 1.81 lb |
| Walleye | 1.22 | 3.21 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
Black Bullhead
Black Crappie
Bluegill
From the 2022-07-25 survey
Wellner-Hageman Reservoir (aka Mound Creek Reservoir), near Sanborn, is a man-made 70-acre lake located in Brown County. The class 33 reservoir was created in the spring of 1993 for flood and erosion control for Mound Creek and lower portions of the Cottonwood River. Wellner-Hageman Reservoir is within a large…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Wellner-Hageman Reservoir. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Wellner-Hageman ReservoirFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — Wellner-Hageman ReservoirFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Wellner-Hageman ReservoirPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Wellner-Hageman Reservoir?
Minnesota DNR surveys at Wellner-Hageman Reservoir average 1.22 walleye per unit of sampling effort (CPUE) across 6 surveys. The most recent is a Standard Survey dated July 25, 2022. Length samples in the latest survey that recorded them ran 17–26 inches. Minnesota DNR lists 9 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 Wellner-Hageman Reservoir last surveyed?
The most recent fisheries survey on file for Wellner-Hageman Reservoir is dated July 25, 2022. 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 Wellner-Hageman Reservoir stocked?
Minnesota DNR publishes a stocking history for Wellner-Hageman Reservoir. 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 Wellner-Hageman Reservoir fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Wellner-Hageman Reservoir 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.
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