Douglas Lake
Otsego County, Michigan86 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.
- 36 ft max depth
- Limited data
Douglas Lake in Otsego County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 16.5 ft visibility. Maximum depth: 36 ft. Surface area: 86 acres.
- Clarity
- 16.5 ft
- Max depth
- 36 ft
- Area
- 86 acres
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Watch Douglas Lake’s letter
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Free interactive depth-contour map of Douglas Lake, reaching a maximum surveyed depth of 36 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Douglas Lake has no grade
Douglas 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, Douglas Lake is Not Rated — not an F. Its 16.5-foot median from 7 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.
Douglas Lake is a 86-acre lake in Otsego County, Michigan with a maximum depth of 36 feet. The lake supports 22 documented fish species including Blacknose shiner, Bluegill, and Brown bullhead.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-18. Grade methodology: LakeQuality methodology.
What Douglas Lake is good for
From access and monitoring records, not editorial picks.
- Clear water16.5 ft of visibility
- Fishing22 species recorded
- Deep water36 ft surveyed max depth
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Douglas Lake
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 16.5 ft down. TSI 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 36 ft |
| Surface Area | 86 acres |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Douglas Lake
Graded lakes near Douglas Lake
Douglas Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Otsego County
Frequently asked questions about Douglas Lake
Where is Douglas Lake?
- Douglas Lake is a lake in Otsego 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 Douglas Lake?
- Douglas Lake in Otsego County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 16.5 ft visibility. Maximum depth: 36 ft. Surface area: 86 acres.
Is Douglas Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Douglas Lake?
- Douglas Lake has a maximum depth of 36 feet. The lake covers 86 acres.
What fish are in Douglas Lake?
- Fish species found in Douglas Lake include Blacknose shiner, Bluegill, Brown bullhead, Central mudminnow, Common shiner, Creek chub, Golden shiner, Iowa darter, Johnny darter, Lake herring, Largemouth bass, Mottled sculpin, Northern logperch, Northern pike, Pumpkinseed, Rock bass, Sand shiner, Smallmouth bass, Spottail shiner, Trout-perch, White sucker, Yellow perch. Douglas Lake is located in Otsego County, Michigan.
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Where this data comes from
7 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
NALMS7 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
Lake size & watershed from HydroLAKES (HydroSHEDS)