Manor Woods Pond
Olmsted County, MinnesotaLimited DataEutrophic
Manor Woods Pond earns an F: phosphorus readings still being added and clarity at 2.5 ft signal heavy nutrient loading from the surrounding watershed. 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.
At a TSI of 64, Manor Woods Pond reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within the 5 graded lakes of Olmsted County, Manor Woods Pond sits at rank 5, near the bottom of the county list.
No invasive species are currently listed at Manor Woods Pond — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Manor Woods Pond, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Manor Woods Pond — most use is by shoreline residents and their guests. 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 2024-09-27. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2.5 ft of visibility. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | 0 m/yr | 3 |
Ice Season
Historical ice data from Minnesota DNR (6 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-02-27 (2024) | 2023-04-08 (2023) |
| Ice-In | 2022-11-20 (2022) | 2024-12-01 (2024) |
Most recent ice-out: 2026-03-22
Location
County Ranking
Ranked #5 of 5 lakes in Olmsted County
Nearby Lakes in Olmsted County
More Minnesota Lake Rankings
State Parks Near Manor Woods Pond
Other Grade F Lakes in Minnesota
Eutrophic Lakes in Minnesota
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Ice data from Minnesota DNR Climate
Most recent sample: 2024-09-27
Monitoring stations: 1