Minnesota DNR fisheries surveys · latest September 9, 2025
Sauk Lake FishingDWater-quality grade D
Minnesota DNR surveys at Sauk Lake average 44.05 walleye per unit of sampling effort (CPUE) across 29 surveys. The most recent is a Targeted Survey dated September 9, 2025. Length samples in the latest survey that recorded them ran 5–10 inches. In Stearns County, Minnesota, Sauk Lake carries an overall water-quality grade of D. Water clarity averages 3.9 feet of visibility, and there are 3 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 Sauk Lake
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 Sauk 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
3 public boat landings are recorded on Sauk 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 Sauk Lake average 44.05 walleye per unit of sampling effort (CPUE) across 29 surveys. The most recent is a Targeted Survey dated September 9, 2025. Length samples in the latest survey that recorded them ran 5–10 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Sauk Lake D 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
29 surveys on file from MN DNR Fisheries. Most recent: 2025-09-09 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Yellow Perch | 47.09 | 0.1 lb |
| Walleye | 44.05 | 1.33 lb |
| Bluntnose Minnow | 40.43 | — |
| Bluegill | 16.70 | 0.23 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
Bluegill
From the 2025-09-09 survey
Sauk (Big Sauk) Lake (DOW# 77-0150-00; Lake Class 25) is a 2,126-acre lake that extends north of the Sauk Centre Dam. The lake has a maximum depth of 61 feet, an average depth of 17 feet, and water visibility around 6 feet. Sauk Lake has a variety of submerged, emergent, and floating-leaf vegetation around its…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Sauk Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SaukFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — SaukFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SaukPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Sauk Lake?
Minnesota DNR surveys at Sauk Lake average 44.05 walleye per unit of sampling effort (CPUE) across 29 surveys. The most recent is a Targeted Survey dated September 9, 2025. Length samples in the latest survey that recorded them ran 5–10 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 Sauk Lake last surveyed?
The most recent fisheries survey on file for Sauk Lake is dated September 9, 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 Sauk Lake stocked?
Minnesota DNR publishes a stocking history for Sauk 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 Sauk Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Sauk Lake D 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 Sauk Lake
Top-rated places to stay near Sauk Lake
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