Pleasant Lake
Washtenaw County, Michigan196 acresView mapDirections
EGLE publishes the water-quality measurements for Pleasant Lake. Here is what has been measured.
- 36 ft max depth
- Limited data
Pleasant Lake in Washtenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 7.5 ft visibility. Maximum depth: 36 ft. Surface area: 195.7 acres.
Pleasant Lake is a 196-acre lake in Washtenaw County, Michigan with a maximum depth of 36 feet. Overall water quality is declining over recent sampling years. The lake supports 1 documented fish species including Largemouth bass.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-12. Methodology: how these readings are compared.
What Pleasant Lake is good for
From access and monitoring records, not editorial picks.
- Deep water36 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Pleasant Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Pleasant Lake
These are the measurements EGLE publishes for Pleasant Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 7.5 ft. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Pleasant Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
36 ft
Surface area
196 acres
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Stays near Pleasant Lake
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Fish Species
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Fishing Pleasant Lake
Water Quality Trend: Worsening
Based on 7 years of monitoring (2016–2023).
Water clarity
Stable7 years
Phosphorus
Worsening+0.95 µg/L/yr5 years
Chlorophyll-a
Worsening+0.78 µg/L/yr7 years
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Pleasant Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Bridgewater Twp WwtpSaline · 4.3 mi away · NPDES MI0057118Recent violation
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.
Nearby Lakes in Washtenaw County
Frequently asked questions about Pleasant Lake
Where is Pleasant Lake?
- Pleasant Lake is a lake in Washtenaw County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Pleasant Lake?
- Pleasant Lake in Washtenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 7.5 ft visibility. Maximum depth: 36 ft. Surface area: 195.7 acres.
Is Pleasant Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Pleasant Lake?
- Pleasant Lake has a maximum depth of 36 feet. The lake covers 195.7 acres.
What fish are in Pleasant Lake?
- Fish species found in Pleasant Lake include Largemouth bass. Pleasant Lake is located in Washtenaw County, Michigan.
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Where this data comes from
221 measurements from 1 monitoring station, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS221 samples · 2016–2022
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)