Twin Lakes
Oakland County, Michigan13 acresView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
↑ up from C at the last regrade
- Mesotrophic
- #15 of 29 in the county
Twin Lakes in Oakland County, Michigan has a water quality grade of A (Excellent). Water clarity: 5 ft visibility. Phosphorus: 28 µg/L. Chlorophyll-a (algae): 6 µg/L. Surface area: 12.6 acres.
- Clarity
- 5 ft
- Typical in September
- 55°F
- Area
- 13 acres
- Type
- Mesotrophic
- Phosphorus
- 28 µg/L
- Chlorophyll-a
- 6 µg/L
- Trend
- ↓ Declining
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Watch Twin Lakes’s letter
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Twin Lakes is a 13-acre mesotrophic lake in Oakland County, Michigan. Water quality is graded A based on 1 sampling years through 2023. Overall water quality is declining over recent sampling years. The lake supports 7 documented fish species including Bluegill, Fathead minnow, and Golden shiner. Compared to the 28 other monitored lakes in Oakland County, Twin Lakes ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-22. Grade methodology: LakeQuality methodology.
What Twin Lakes is good for
From access and monitoring records, not editorial picks.
- Fishing7 species recorded
Swimming Safety
Grade onlyLow algae
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 A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
Murky, only visible to about 5 ft. Phosphorus 28 µg/L. Chlorophyll-a 6 µg/L. TSI 51. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | 28 µg/L | Not graded |
| Chlorophyll-a (Algae) | 6 µg/L | Good |
| Trophic State Index (TSI) | 51 | Mesotrophic |
Moderate nutrients, good water quality
Water Temperature
Twin Lakes typically sits around 55°F at the surface in September. Summer average is about 56°F. Usually warmest in Aug (about 57°F) and coldest in May (about 50°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 185 field readings (2021–2023) via the EPA Water Quality Portal. See the full Twin Lakes water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 13 acres |
No bathymetric survey has been published for Twin Lakes, so its depth is not documented here.
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Twin Lakes
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.356 m/yr | 5 |
| Phosphorus | ↓ Declining | +1.98 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -1.3 µg/L/yr | 3 |
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Twin Lakes under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Trw Vehicle Safety Systems IncWashington · 4.8 mi away · NPDES MIG250059Recent violation
- Natural Aggregates-WashingtonWashington · 3.1 mi away · NPDES MIG490256
- Mdeq-Rrd-House Of ImportsRochester Hills · 4.8 mi away · NPDES MI0058709
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 #15 of 29 lakes in Oakland County
Nearby Lakes in Oakland County
Frequently asked questions about Twin Lakes
Where is Twin Lakes?
- Twin Lakes is a lake in Oakland County, Michigan. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Twin Lakes?
- Twin Lakes in Oakland County, Michigan has a water quality grade of A (Excellent). Water clarity: 5 ft visibility. Phosphorus: 28 µg/L. Chlorophyll-a (algae): 6 µg/L. Surface area: 12.6 acres.
Is Twin Lakes safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Twin Lakes?
- Twin Lakes typically sits around 55°F at the surface in September, from 185 EPA Water Quality Portal field readings (2021–2023). That is a typical value for the month, not a live reading.
What fish are in Twin Lakes?
- Fish species found in Twin Lakes include Bluegill, Fathead minnow, Golden shiner, Lake herring, Largemouth bass, Pumpkinseed, Yellow perch. Twin Lakes is located in Oakland County, Michigan.
Explore Twin Lakes across LakeQuality
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Moderate nutrients, good water quality
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Where this data comes from
39 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS39 samples · 2021–2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)