Mullett Lake
Cheboygan County, Michigan16,702 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
- 120 ft max depth
- Public access
- Limited data
Mullett Lake in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 120 ft. Surface area: 16701.7 acres.
- Clarity
- 13 ft
- Max depth
- 120 ft
- Area
- 16,702 acres
- Public access
- Yes
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Watch Mullett Lake’s letter
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Free interactive depth-contour map of Mullett Lake, reaching a maximum surveyed depth of 120 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Mullett Lake has no grade
Mullett 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, Mullett Lake is Not Rated — not an F. Its 13-foot median from 13 readings collected 2022 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.
Mullett Lake is a 16,702-acre lake in Cheboygan County, Michigan with a maximum depth of 120 feet. The lake supports 23 documented fish species including Alewife, Blackchin shiner, and Blacknose shiner. Public access is available with 3 public boat landings.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-08-24. Grade methodology: LakeQuality methodology.
What Mullett Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13 ft of visibility
- Boat launch3 documented ramps
- Fishing23 species recorded
- Deep water120 ft surveyed max depth
- Big water16,702 acres
Mullett Lake Water Quality Report Card (2026)
A printable one-page report card for Mullett Lake: grade, clarity, phosphorus, algae, multi-year trend, depth, and fish — with sources.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Mullett Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Water quality measurements for Mullett Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 13 ft. TSI 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Current Conditions
USGS snapshot Sep 7, 2026, 3:15 PM from gauge 04129950 (MULLETT LAKE AT OUTLET NEAR CHEBOYGAN, MI). Station page ↗ — a live reading replaces this snapshot when the gauge responds. Missing live data is not an all-clear.
→ Mullett Lake water level: the live USGS gauge reading
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 120 ft |
| Surface Area | 16,702 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Jewell RoadPublic
- Aloha State ParkPublic
- Mullett Lake VillagePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Mullett Lake
EPA Impairment Status
Mullett 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 MI040700040403-06 · Official waterbody report
Graded lakes near Mullett Lake
Mullett Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Cheboygan County
Frequently asked questions about Mullett Lake
Where is Mullett Lake?
- Mullett Lake is a lake in Cheboygan 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 Mullett Lake?
- Mullett Lake in Cheboygan County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 120 ft. Surface area: 16701.7 acres.
Is Mullett Lake safe to swim in?
- The letter is not a swimming clearance. Mullett Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Mullett Lake?
- Mullett Lake has a maximum depth of 120 feet. The lake covers 16701.7 acres.
What fish are in Mullett Lake?
- Fish species found in Mullett Lake include Alewife, Blackchin shiner, Blacknose shiner, Bluntnose minnow, Common shiner, Creek chub, Iowa darter, Johnny darter, Lake herring, Lake sturgeon, Largemouth bass, Mimic shiner, Mottled sculpin, Northern logperch, Northern longear sunfish, Northern pike, Pumpkinseed, Rock bass, Sand shiner, Smallmouth bass, Western banded killifish, White sucker, Yellow perch. Mullett Lake is located in Cheboygan County, Michigan.
What is the water level at Mullett Lake?
- The USGS snapshot on this page for Mullett Lake is 593.15 ft of water-surface elevation, recorded Sep 7, 2026, 3:15 PM at gauge 04129950. Current Conditions hydrates a live NWIS reading from that same station when the gauge responds. A missed live fetch is not an all-clear.
Are there boat ramps on Mullett Lake?
- Mullett Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Jewell Road, Aloha State Park, Mullett Lake Village. Public access is listed as yes.
Explore Mullett Lake across LakeQuality
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Where this data comes from
13 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS13 samples · 2022
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)
Named boat-access points from the USGS National Boat Ramps inventory