Pleasant Lake
Oakland County, Michigan45 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
- Mesotrophic
- Impaired · Mercury
- #23 of 29 in the county
- Limited data
Pleasant Lake in Oakland County, Michigan has a water quality grade of B (Good). Water clarity: 10 ft visibility. Phosphorus: 22.5 µg/L. Surface area: 44.8 acres.
- Clarity
- 10 ft
- Area
- 45 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Free interactive depth-contour map of Pleasant Lake, reaching a maximum surveyed depth of 52 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Pleasant Lake is a 45-acre mesotrophic lake in Oakland County, Michigan. Water quality is graded B based on 1 sampling years through 2023. Overall water quality is improving over recent sampling years. The lake supports 11 documented fish species including Blacknose shiner, Bluegill, and Bluntnose minnow. Compared to the 28 other monitored lakes in Oakland County, Pleasant Lake ranks #23 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-22. Grade methodology: LakeQuality methodology.
What Pleasant Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10 ft of visibility
- Fishing11 species recorded
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The B is nutrients and algae, not a swimming clearance. Pleasant Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water Quality Grade: B (Good)
Good clarity, visible to about 10 ft. Phosphorus 22.5 µg/L. TSI 46. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10 ft | Not graded |
| Phosphorus | 22.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 45 acres |
No bathymetric survey has been published for Pleasant Lake, so its depth is not documented here.
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Pleasant Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.55 m/yr | 4 |
| Phosphorus | ↑ Improving | -1.82 µg/L/yr | 4 |
EPA Impairment Status
Pleasant Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040900050102-07 · Official waterbody report · Matched by proximity (2.94 km)
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Pleasant Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Commerce Twp WwtpCommerce Township · 2.5 mi away · NPDES MI0025071MajorRecent violation
- Walled Lake MS4-OaklandWalled Lake · 3.2 mi away · NPDES MI0060058Recent violation
- Amoco Oil Co-Walled LakeWalled Lake · 3.5 mi away · NPDES MIG080151
- Textron Inc Walled LakeWalled Lake · 4 mi away · NPDES MI0054950
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #23 of 29 lakes in Oakland County
Nearby Lakes in Oakland County
Frequently asked questions about Pleasant Lake
Where is Pleasant Lake?
- Pleasant Lake is a lake in Oakland County, Michigan. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Pleasant Lake?
- Pleasant Lake in Oakland County, Michigan has a water quality grade of B (Good). Water clarity: 10 ft visibility. Phosphorus: 22.5 µg/L. Surface area: 44.8 acres.
Is Pleasant Lake safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Pleasant Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What fish are in Pleasant Lake?
- Fish species found in Pleasant Lake include Blacknose shiner, Bluegill, Bluntnose minnow, Fathead minnow, Lake herring, Largemouth bass, Longnose gar, Northern pike, Rock bass, Sand shiner, Western banded killifish. Pleasant Lake is located in Oakland County, Michigan.
Explore Pleasant Lake across LakeQuality
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Moderate nutrients, good water quality
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Where this data comes from
54 measurements from 1 monitoring station, 2018–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS54 samples · 2018–2023
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)