West Twin Lake
Montmorency County, Michigan1,307 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.
- 28 ft max depth
- Public access
- Limited data
West Twin Lake in Montmorency County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 28 ft. Surface area: 1307.4 acres.
- Clarity
- 13 ft
- Max depth
- 28 ft
- Area
- 1,307 acres
- Trend
- → Stable
- Public access
- Yes
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Watch West Twin Lake’s letter
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Free interactive depth-contour map of West Twin Lake, reaching a maximum surveyed depth of 28 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Why West Twin Lake has no grade
West 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, West Twin Lake is Not Rated — not an F. Its 13-foot median from 45 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.
West Twin Lake is a 1,307-acre lake in Montmorency County, Michigan with a maximum depth of 28 feet. Water clarity is improving over recent sampling years. The lake supports 1 documented fish species including Largemouth bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2023-06-25. Grade methodology: LakeQuality methodology.
What West Twin Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13 ft of visibility
- Boat launch1 documented ramp
- Big water1,307 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for West Twin 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
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 28 ft |
| Surface Area | 1,307 acres |
| Public Access | Yes |
Recreation & Access
- West Twin LakePublic
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 West Twin Lake
Water Quality Trend: → Stable
Based on 8 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.51 m/yr | 6 |
| Phosphorus | → Stable | +0.08 µg/L/yr | 7 |
| Chlorophyll-a | ↓ Declining | +0.05 µg/L/yr | 7 |
Graded lakes near West Twin Lake
West Twin Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Montmorency County
Frequently asked questions about West Twin Lake
Where is West Twin Lake?
- West Twin Lake is a lake in Montmorency 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 West Twin Lake?
- West Twin Lake in Montmorency County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 28 ft. Surface area: 1307.4 acres.
Is West Twin Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is West Twin Lake?
- West Twin Lake has a maximum depth of 28 feet. The lake covers 1307.4 acres.
What fish are in West Twin Lake?
- Fish species found in West Twin Lake include Largemouth bass. West Twin Lake is located in Montmorency County, Michigan.
Are there boat ramps on West Twin Lake?
- West Twin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include West Twin Lake. Public access is listed as yes.
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Where this data comes from
45 measurements from 1 monitoring station, 2017–2023. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS45 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
Named boat-access points from the USGS National Boat Ramps inventory