Minnesota DNR fisheries surveys · latest August 21, 1978
Linn Lake FishingFWater-quality grade F
Minnesota DNR surveys at Linn Lake average 8.41 northern pike per unit of sampling effort (CPUE) across 1 survey. The most recent is a Standard Survey dated August 21, 1978. In Chisago County, Minnesota, Linn Lake carries an overall water-quality grade of F. Water clarity averages 2.0 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.
Stocking at Linn Lake
No stocking record for Linn 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 Linn Lake average 8.41 northern pike per unit of sampling effort (CPUE) across 1 survey. The most recent is a Standard Survey dated August 21, 1978.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Linn Lake F from EPA Water Quality Portal chemistry, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1978-08-21 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Black Bullhead | 245.34 | 0.12 lb |
| Brown Bullhead | 46.59 | 0.26 lb |
| Bluegill | 20.33 | 0.38 lb |
| Hybrid Sunfish | 13.75 | 0.31 lb |
| Northern Pike | 8.41 | 0.74 lb |
| Pumpkinseed | 1.67 | 0.38 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.
From the 1978-08-21 survey
When compared to respective state medians, the present fish population status of Linn Lake is as follows. The Blk Bullhead was extremely high at 164 times the state median and the Brn Blhd was very high at 52 times the median. The N Pike was very high at 13.50 per set or 5 times the median and ranged from 11 to 16…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Linn Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — LinnFisheries Lake Survey · MN DNR LakeFinder
Common questions
What fish are in Linn Lake?
Minnesota DNR surveys at Linn Lake average 8.41 northern pike per unit of sampling effort (CPUE) across 1 survey. The most recent is a Standard Survey dated August 21, 1978. Those are survey results, not a catch report: a net set on one date measures what was in that net.
When was Linn Lake last surveyed?
The most recent fisheries survey on file for Linn Lake is dated August 21, 1978. 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 Linn Lake stocked?
No stocking record for Linn 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 Linn Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Linn Lake F from EPA Water Quality Portal chemistry, and the water-quality trend over 6 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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