Little Twin Lake
Kalkaska County, Michigan85 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.
- 31 ft max depth
- Limited data
Little Twin Lake in Kalkaska County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 21 ft visibility. Maximum depth: 31 ft. Surface area: 85.2 acres.
- Clarity
- 21 ft
- Max depth
- 31 ft
- Area
- 85 acres
- Trend
- ↑ Improving
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Watch Little Twin Lake’s letter
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Free interactive depth-contour map of Little Twin Lake, reaching a maximum surveyed depth of 31 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why Little Twin Lake has no grade
Little Twin 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, Little Twin Lake is Not Rated — not an F. Its 21-foot median from 98 readings collected 2016–2022 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.
Little Twin Lake is a 85-acre lake in Kalkaska County, Michigan with a maximum depth of 31 feet. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-08. Grade methodology: LakeQuality methodology.
What Little Twin Lake is good for
From access and monitoring records, not editorial picks.
- Clear water21 ft of visibility
- Deep water31 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 Little Twin Lake
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 21 ft down. TSI 33.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 21 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 33 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 31 ft |
| Surface Area | 85 acres |
Fishing Little Twin Lake
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.236 m/yr | 7 |
| Phosphorus | ↑ Improving | -0.34 µg/L/yr | 7 |
| Chlorophyll-a | ↓ Declining | +0.17 µg/L/yr | 7 |
Graded lakes near Little Twin Lake
Little Twin Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Kalkaska County
Frequently asked questions about Little Twin Lake
Where is Little Twin Lake?
- Little Twin Lake is a lake in Kalkaska 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 Little Twin Lake?
- Little Twin Lake in Kalkaska County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 21 ft visibility. Maximum depth: 31 ft. Surface area: 85.2 acres.
Is Little Twin Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Little Twin Lake?
- Little Twin Lake has a maximum depth of 31 feet. The lake covers 85.2 acres.
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Where this data comes from
98 measurements from 1 monitoring station, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS98 samples · 2016–2022
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.