Lotus Lake
Oakland County, Michigan183 acresView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Mercury
- 117 ft max depth
- Limited data
Lotus Lake in Oakland County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 11 ft visibility. Maximum depth: 117 ft. Surface area: 183.2 acres.
- Clarity
- 11 ft
- Max depth
- 117 ft
- Area
- 183 acres
- Trend
- ↓ Declining
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Stays near Lotus Lake
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Watch Lotus Lake’s letter
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Why Lotus Lake has no grade
Lotus Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Lotus Lake is Not Rated — not an F. Its 11-foot median from 57 readings collected 2016–2022 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by EGLE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lotus Lake is a 183-acre lake in Oakland County, Michigan with a maximum depth of 117 feet. Overall water quality is declining over recent sampling years. The lake supports 1 documented fish species including Lake herring.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-13. Grade methodology: LakeQuality methodology.
What Lotus Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11 ft of visibility
- Deep water117 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lotus Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.
Water quality measurements for Lotus Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 11 ft. TSI 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 117 ft |
| Surface Area | 183 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Lotus Lake
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.076 m/yr | 7 |
| Phosphorus | ↓ Declining | +0.31 µg/L/yr | 7 |
| Chlorophyll-a | ↓ Declining | +0.21 µg/L/yr | 7 |
EPA Impairment Status
Lotus 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 MI040900030103-08 · Official waterbody report · Matched by proximity (0.6 km)
Nearby Lakes in Oakland County
Frequently asked questions about Lotus Lake
Where is Lotus Lake?
- Lotus Lake is a lake in Oakland County, Michigan. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lotus Lake?
- Lotus Lake in Oakland County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 11 ft visibility. Maximum depth: 117 ft. Surface area: 183.2 acres.
Is Lotus Lake safe to swim in?
- The letter is not a swimming clearance. Lotus Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, pCBs. Check local advisories before you swim.
How deep is Lotus Lake?
- Lotus Lake has a maximum depth of 117 feet. The lake covers 183.2 acres.
What fish are in Lotus Lake?
- Fish species found in Lotus Lake include Lake herring. Lotus Lake is located in Oakland County, Michigan.
Explore Lotus Lake across LakeQuality
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Where this data comes from
57 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
NALMS57 samples · 2016–2022
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