Crockery Lake
Ottawa County, Michigan104 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
- 54 ft max depth
- Limited data
Crockery Lake in Ottawa County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4 ft visibility. Maximum depth: 54 ft. Surface area: 104.2 acres.
- Clarity
- 4 ft
- Max depth
- 54 ft
- Area
- 104 acres
- Trend
- ↑ Improving
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Watch Crockery Lake’s letter
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Free interactive depth-contour map of Crockery Lake, reaching a maximum surveyed depth of 54 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Crockery Lake has no grade
Crockery 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, Crockery Lake is Not Rated — not an F. Its 4-foot median from 96 readings collected 2016–2023 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.
Crockery Lake is a 104-acre lake in Ottawa County, Michigan with a maximum depth of 54 feet. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-06-19. Grade methodology: LakeQuality methodology.
What Crockery Lake is good for
From access and monitoring records, not editorial picks.
- Deep water54 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Crockery Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
Water quality measurements for Crockery Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 4 ft. TSI 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 54 ft |
| Surface Area | 104 acres |
Fishing Crockery Lake
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.114 m/yr | 7 |
| Phosphorus | → Stable | +0.21 µg/L/yr | 6 |
| Chlorophyll-a | ↑ Improving | -0.5 µg/L/yr | 6 |
EPA Impairment Status
Crockery Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MI040500060601-01 · Official waterbody report
Graded lakes near Crockery Lake
Crockery Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Ottawa County
Frequently asked questions about Crockery Lake
Where is Crockery Lake?
- Crockery Lake is a lake in Ottawa 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 Crockery Lake?
- Crockery Lake in Ottawa County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 4 ft visibility. Maximum depth: 54 ft. Surface area: 104.2 acres.
Is Crockery Lake safe to swim in?
- The letter is not a swimming clearance. Crockery Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
How deep is Crockery Lake?
- Crockery Lake has a maximum depth of 54 feet. The lake covers 104.2 acres.
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Where this data comes from
96 measurements from 1 monitoring station, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS96 samples · 2016–2023
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