Minnesota DNR fisheries surveys · latest September 18, 2025
Drewery Lake FishingCWater-quality grade C
Minnesota DNR surveys at Drewery Lake average 21.07 walleye per unit of sampling effort (CPUE) across 38 surveys. The most recent is a Standard Survey dated September 18, 2025. Length samples in the latest survey that recorded them ran 8–28 inches. In Beltrami County, Minnesota, Drewery Lake carries an overall water-quality grade of C. Water clarity averages 3.5 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 Drewery Lake
21 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 Drewery 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 Drewery 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 Drewery Lake average 21.07 walleye per unit of sampling effort (CPUE) across 38 surveys. The most recent is a Standard Survey dated September 18, 2025. Length samples in the latest survey that recorded them ran 8–28 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Drewery Lake C from EPA Water Quality Portal chemistry, and the water-quality trend over 2 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
38 surveys on file from MN DNR Fisheries. Most recent: 2025-09-18 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Yellow Perch | 234.53 | 0.18 lb |
| Walleye | 21.07 | 0.95 lb |
| Bluntnose Minnow | 13.08 | — |
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
From the 2025-09-18 survey
Cass Lake is a nearly 16,000 acre lake and is the largest lake in the Cass Lake chain, which altogether includes over 25,000 acres of connected waters. The lake has a mix of expansive, shallow flats and deeper water with lots of underwater structure. Walleye, Yellow Perch, and Muskellunge are the most sought-after…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Drewery Lake. 5 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — CassFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Cass (1632)Aquatic Plant Report · MN DNR LakeFinder
- —Aquatic Plant Report — Cass (1754)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — CassFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — CassPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Drewery Lake?
Minnesota DNR surveys at Drewery Lake average 21.07 walleye per unit of sampling effort (CPUE) across 38 surveys. The most recent is a Standard Survey dated September 18, 2025. Length samples in the latest survey that recorded them ran 8–28 inches. Minnesota DNR lists 21 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 Drewery Lake last surveyed?
The most recent fisheries survey on file for Drewery Lake is dated September 18, 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 Drewery Lake stocked?
Minnesota DNR publishes a stocking history for Drewery 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 Drewery Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Drewery Lake C from EPA Water Quality Portal chemistry, and the water-quality trend over 2 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 Drewery Lake
Top-rated places to stay near Drewery Lake
Planning a trip to Drewery Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Drewery Lake — straight to your inbox. No spam, unsubscribe anytime.