Devils Head Lake
Gogebic County, Michigan92 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
- 47 ft max depth
- Public access
- Limited data
Devils Head Lake in Gogebic County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 47 ft. Surface area: 91.8 acres.
- Clarity
- 9 ft
- Typical in September
- 73°F
- Max depth
- 47 ft
- Area
- 92 acres
- Trend
- ↓ Declining
- Public access
- Yes
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Stays near Devils Head Lake
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Watch Devils Head Lake’s letter
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Free interactive depth-contour map of Devils Head Lake, reaching a maximum surveyed depth of 47 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Devils Head Lake has no grade
Devils Head 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, Devils Head Lake is Not Rated — not an F. Its 9-foot median from 3 readings collected 2017–2023 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.
Devils Head Lake is a 92-acre lake in Gogebic County, Michigan with a maximum depth of 47 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-09-06. Grade methodology: LakeQuality methodology.
What Devils Head Lake is good for
From access and monitoring records, not editorial picks.
- Deep water47 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Devils Head Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water quality measurements for Devils Head 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
Water Temperature
Devils Head Lake typically sits around 73°F at the surface in September. Summer average is about 68°F. Usually warmest in Jul (about 75°F) and coldest in Jun (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 8 field readings (2010–2023) via the EPA Water Quality Portal. See the full Devils Head Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 47 ft |
| Surface Area | 92 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fishing Devils Head Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.404 m/yr | 3 |
EPA Impairment Status
Devils Head 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 MI040201020201-04 · Official waterbody report · Matched by proximity (2.01 km)
Graded lakes near Devils Head Lake
Devils Head Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Gogebic County
Frequently asked questions about Devils Head Lake
Where is Devils Head Lake?
- Devils Head Lake is a lake in Gogebic 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 Devils Head Lake?
- Devils Head Lake in Gogebic County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 47 ft. Surface area: 91.8 acres.
Is Devils Head Lake safe to swim in?
- The letter is not a swimming clearance. Devils Head Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Devils Head Lake?
- Devils Head Lake typically sits around 73°F at the surface in September, from 8 EPA Water Quality Portal field readings (2010–2023). That is a typical value for the month, not a live reading.
How deep is Devils Head Lake?
- Devils Head Lake has a maximum depth of 47 feet. The lake covers 91.8 acres.
Explore Devils Head Lake across LakeQuality
14.4 mi away · 50 ft
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Where this data comes from
3 measurements from 1 monitoring station, 2017–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Eastern Regional Office
USFSEASTERN3 samples · 2017–2023
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
Lake size & watershed from HydroLAKES (HydroSHEDS)