Lax Lake
Lake County, MinnesotaMesotrophic
On the LakeGrade scale Lax Lake grades a B, with clarity at 9.4 ft and 18 µg/L of phosphorus placing it above the Minnesota median. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.
Mesotrophic conditions dominate at Lax Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. A maximum depth of 35 ft puts Lax Lake in the middle of Minnesota's depth distribution. The lake's 295 acres and 3.9 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Among the 142 graded lakes in Lake County, Lax Lake sits at rank 52, above the county median.
No invasive species are currently listed at Lax Lake — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Lax Lake, one of 9 fish species on record for the lake. A documented public access point at Lax Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been logged at Lax Lake more than two dozen times, putting the median around Apr 29 — a useful baseline for tracking climate trends. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-09-15. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.4 ft. Phosphorus level: 18 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.4 ft | C |
| Phosphorus | 18 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 35 ft |
| Average Depth | 10 ft |
| Surface Area | 295.1 acres |
| Shoreline Length | 3.9 mi |
| Littoral Zone | 65% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Lax Lake (14-day solunar calendar)
→ Is it safe to eat fish from Lax Lake? (mercury & PFAS guide)
→ Lax Lake fishing regulations (limits, seasons, special rules)
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.735 m/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (104 observations).
Estimated open water season: 202 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2000-04-05 (2000) | 1996-05-13 (1996) |
| Ice-In | 1988-10-29 (1988) | 1998-12-07 (1998) |
Most recent ice-out: 2020-05-02
Location
County Ranking
Ranked #52 of 142 lakes in Lake County
Nearby Lakes in Lake County
More Minnesota Lake Rankings
State Parks Near Lax Lake
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
30 surveys on file from MN DNR Fisheries. Most recent: 2025-07-21 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Largemouth Bass | 15.75 | 1.26 lb |
| Bluegill | 14.57 | 0.23 lb |
| Yellow Perch | 10.80 | 0.18 lb |
| White Sucker | 7.40 | 2.32 lb |
| CNM | 6.86 | — |
| GOS | 5.82 | — |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
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.
Largemouth Bass
Bluegill
Yellow Perch
White Sucker
From the 2025-07-21 survey
A targeted survey of nearshore fish species in Lax Lake was conducted on July 21st-July 23rd, 2025, by Lake Biological Monitoring and Assessment (LBMA) program staff. Sampling sites were evenly spaced around the lake, and each was sampled by backpack electrofishing, mini-fyke nets, and seining with a 50-foot or…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lax Lake. 4 reports on file.
- —Fisheries Lake Survey — LaxFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Lax (0751)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — LaxFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — LaxPublic Water Access Sites · MN DNR LakeFinder
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2022-09-15
Monitoring stations: 1