Middle Lake
Lapeer County, Michigan31 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 · Oxygen depletion (low DO)
- Limited data
Middle Lake in Lapeer County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Surface area: 31 acres.
- Clarity
- 9 ft
- Area
- 31 acres
- Trend
- ↑ Improving
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Stays near Middle Lake
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Watch Middle Lake’s letter
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Why Middle Lake has no grade
Middle 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, Middle Lake is Not Rated — not an F. Its 9-foot median from 50 readings collected 2018–2023 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.
Middle Lake is a 31-acre lake in Lapeer County, Michigan. Overall water quality is improving over recent sampling years. The lake supports 20 documented fish species including Black bullhead, Black crappie, and Blackchin shiner.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-06-17. Grade methodology: LakeQuality methodology.
What Middle Lake is good for
From access and monitoring records, not editorial picks.
- Fishing20 species recorded
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Middle Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Water quality measurements for Middle Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9 ft. TSI 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 31 acres |
No bathymetric survey has been published for Middle Lake, so its depth is not documented here.
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Middle Lake
Water Quality Trend: ↑ Improving
Based on 8 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.416 m/yr | 8 |
| Phosphorus | ↑ Improving | -1.03 µg/L/yr | 7 |
| Chlorophyll-a | ↓ Declining | +0.34 µg/L/yr | 7 |
EPA Impairment Status
Middle Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MI040802040104-08 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Middle Lake under Clean Water Act (NPDES) discharge permits.
- Wynnwood Llc MhcLapeer · 2 mi away · NPDES MI0056693
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.
Graded lakes near Middle Lake
Middle Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Lapeer County
Frequently asked questions about Middle Lake
Where is Middle Lake?
- Middle Lake is a lake in Lapeer 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 Middle Lake?
- Middle Lake in Lapeer County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Surface area: 31 acres.
Is Middle Lake safe to swim in?
- The letter is not a swimming clearance. Middle Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
What fish are in Middle Lake?
- Fish species found in Middle Lake include Black bullhead, Black crappie, Blackchin shiner, Blackstripe topminnow, Bluegill, Bluntnose minnow, Brook silverside, Brown bullhead, Golden shiner, Green sunfish, Largemouth bass, Longnose gar, Northern longear sunfish, Northern pike, Pumpkinseed, Warmouth, Western banded killifish, White sucker, Yellow bullhead, Yellow perch. Middle Lake is located in Lapeer County, Michigan.
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Where this data comes from
50 measurements from 1 monitoring station, 2018–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS50 samples · 2018–2023
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)