Lake Lapeer
Lapeer County, Michigan297 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.
- Limited data
Lake Lapeer in Lapeer County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.5 ft visibility. Surface area: 297 acres.
- Clarity
- 3.5 ft
- Area
- 297 acres
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Watch Lake Lapeer’s letter
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Why Lake Lapeer has no grade
Lake Lapeer 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, Lake Lapeer is Not Rated — not an F. Its 3.5-foot median from 5 readings collected 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.
Lake Lapeer is a 297-acre lake in Lapeer County, Michigan.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-06-14. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Lake Lapeer
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 3.5 ft. TSI 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 297 acres |
No bathymetric survey has been published for Lake Lapeer, so its depth is not documented here.
Fishing Lake Lapeer
Reservoir Info (USACE NID)
Lake Lapeer is a man-made reservoir impounded by the Lake Lapeer Lake Level Control Structure (completed 1969), built primarily for recreation on the Farmers Creek; earth-type dam, 29 ft tall and 759 ft long.
- Surface area
- 297 ac
- Normal storage
- 3,450 ac-ft
- Max storage
- 5,365 ac-ft
- Drainage area
- 35.8 sq mi
- Hazard class
- Significant
- Owner
- Lake Lapeer Association
Source: USACE National Inventory of Dams, NID ID MI00425 · Operator website · Matched by proximity (0.88 km)
Graded lakes near Lake Lapeer
Lake Lapeer has no grade, but these lakes within a short drive do.
Nearby Lakes in Lapeer County
Frequently asked questions about Lake Lapeer
Where is Lake Lapeer?
- Lake Lapeer is a lake in Lapeer County, Michigan. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Lake Lapeer?
- Lake Lapeer in Lapeer County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.5 ft visibility. Surface area: 297 acres.
Is Lake Lapeer safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
5 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS5 samples · 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.