Lake Mitchell
Sherburne County, MinnesotaLimited DataMesotrophic
Lake Mitchell carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
A TSI near 43 places Lake Mitchell in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. A maximum depth of 33 ft puts Lake Mitchell in the middle of Minnesota's depth distribution. Lake Mitchell covers 170 acres alongside 2.2 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Lake Mitchell ranks 12 of 24 in Sherburne County — solidly in the upper half of the local distribution.
Zebra mussels have been documented at Lake Mitchell, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. The fishery includes walleye alongside the lake's other 13 documented species — a notable draw for Minnesota anglers. The lake lacks a documented public access point, so visitor use is limited. The lake has a partial ice record — 23 observed ice-outs, centered near Apr 6. 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 2023-07-27. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 10.5 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 33 ft |
| Average Depth | 13.8 ft |
| Surface Area | 169.5 acres |
| Shoreline Length | 2.2 mi |
| Littoral Zone | 63% |
| Public Access | No |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Lake Mitchell (14-day solunar calendar)
→ Is it safe to eat fish from Lake Mitchell? (mercury & PFAS guide)
→ Lake Mitchell fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.046 m/yr | 5 |
| Phosphorus | ↓ Declining | +3.5 µg/L/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (25 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-03 (2024) | 2018-05-01 (2018) |
| Ice-In | 2006-12-06 (2006) | 2006-12-09 (2006) |
Most recent ice-out: 2024-03-03
Location
County Ranking
Ranked #12 of 24 lakes in Sherburne County
Cleaner Lakes Within 30 Miles
Lake Mitchell holds Grade B. 4 nearby lakes hold higher grades.
- ABirch LakeWright County · 7 mi · Higher grade (B → A)
- AMitchell LakeSherburne County · 0.1 mi · Higher grade (B → A)
- ABig LakeSherburne County · 0.4 mi · Higher grade (B → A)
- AAnn LakeSherburne County · 6.6 mi · Higher grade (B → A)
Nearby Lakes in Sherburne County
More Minnesota Lake Rankings
State Parks Near Lake Mitchell
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
8 surveys on file from MN DNR Fisheries. Most recent: 2019-06-19 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluntnose Minnow | 26.90 | — |
| Bluegill | 23.92 | 0.11 lb |
| SFS | 21.45 | — |
| Largemouth Bass | 17.09 | 0.98 lb |
| Green Sunfish | 12.77 | 0.1 lb |
| Hybrid Sunfish | 9.40 | 0.23 lb |
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.
Bluegill
Largemouth Bass
Green Sunfish
Hybrid Sunfish
From the 2019-06-19 survey
A targeted survey of the nearshore fish community was conducted on June 19, 2019 by Fisheries Lake IBI program staff. Sampling stations were evenly spaced around the lake and each was sampled by backpack electrofishing and seining with a 50-foot or 15-foot seine, where possible. Backpack electrofishing was completed…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lake Mitchell. 2 reports on file.
- —Fisheries Lake Survey — MitchellFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — MitchellFish Stocking History · 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: 2023-07-27
Monitoring stations: 1