Hamlet Lake
Crow Wing County, MinnesotaLimited DataOligotrophic
On the LakeGrade rubric, Hamlet Lake pulls an A: clarity at 18.5 ft and phosphorus readings still being added put it in the top bracket for Minnesota.
A TSI value of 35 puts Hamlet Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Hamlet Lake is unusually deep for Minnesota at 88 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. At 307 acres, Hamlet Lake fits the Minnesota median for monitored lakes, with 4.5 miles of shoreline. Among the 120 graded lakes in Crow Wing County, Hamlet Lake ranks 12 — in the top quartile locally.
Hamlet Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Hamlet Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. Ice-out has been logged at Hamlet Lake more than two dozen times, putting the median around Apr 17 — a useful baseline for tracking climate trends. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 18.5 ft down. Trophic State Index: 35.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 18.5 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 35 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 88 ft |
| Surface Area | 307.2 acres |
| Shoreline Length | 4.5 mi |
| Littoral Zone | 32% |
| Public Access | No |
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.017 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (51 observations).
Estimated open water season: 232 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-16 (2024) | 2013-05-13 (2013) |
| Ice-In | 2018-11-20 (2018) | 2024-01-08 (2024) |
Most recent ice-out: 2025-04-14
Location
County Ranking
Ranked #12 of 120 lakes in Crow Wing County
Nearby Lakes in Crow Wing County
More Minnesota Lake Rankings
State Parks Near Hamlet Lake
Other Grade A Lakes in Minnesota
Oligotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1989-07-19 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 12.19 | 0.17 lb |
| Yellow Bass | 8.84 | 0.39 lb |
| Hybrid Sunfish | 7.00 | 0.29 lb |
| Northern Pike | 6.10 | 1.09 lb |
| Pumpkinseed | 3.44 | 0.15 lb |
| Rock Bass | 1.70 | 0.31 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
From the 1989-07-19 survey
Northern pike and yellow bullhead numbers are high. Bowfin, brown bullhead, rock bass, pumpkinseed, bluegill, largemouth bass and black crappie are present in average numbers when compared with catch rates from lake class 23. Growth rates for northern pike were below average, and the individual sizes were small. Ages…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Hamlet Lake. 2 reports on file.
- —Fisheries Lake Survey — HamletFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Hamlet (0169)Aquatic Plant Report · 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: 2024-10-20
Monitoring stations: 1