Queneska Island Lake
Essex County, New YorkView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
- Mesotrophic
- #1 of 3 in the county
- Public access
Queneska Island Lake in Essex County, New York has a water quality grade of A (Excellent). Water clarity: 17.4 ft visibility. Phosphorus: 15 µg/L. Chlorophyll-a (algae): 3.4 µg/L.
- Clarity
- 17.4 ft
- Type
- Mesotrophic
- Phosphorus
- 15 µg/L
- Chlorophyll-a
- 3.4 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Queneska Island Lake is a mesotrophic lake in Essex County, New York. Water quality is graded A based on 2 sampling years through 2022. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 2 other monitored lakes in Essex County, Queneska Island Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2022-08-06. Grade methodology: LakeQuality methodology.
What Queneska Island Lake is good for
From access and monitoring records, not editorial picks.
- Clear water17.4 ft of visibility
- Boat launch2 documented ramps
Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
Crystal clear, you can see 17.4 ft down. Phosphorus 15 µg/L. Chlorophyll-a 3.4 µg/L. TSI 41. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 17.4 ft | Not graded |
| Phosphorus | 15 µg/L | Good |
| Chlorophyll-a (Algae) | 3.4 µg/L | Good |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Recreation & Access
- McCuen SlangPublic
- Chimney PointPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Queneska Island Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.1 m/yr | 4 |
| Phosphorus | ↓ Declining | +1.81 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.77 µg/L/yr | 4 |
County Ranking
Ranked #1 of 3 lakes in Essex County
Nearby Lakes in Essex County
Frequently asked questions about Queneska Island Lake
Where is Queneska Island Lake?
- Queneska Island Lake is a lake in Essex County, New York. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Queneska Island Lake?
- Queneska Island Lake in Essex County, New York has a water quality grade of A (Excellent). Water clarity: 17.4 ft visibility. Phosphorus: 15 µg/L. Chlorophyll-a (algae): 3.4 µg/L.
Is Queneska Island Lake safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Queneska Island Lake?
- Queneska Island Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include McCuen Slang, Chimney Point. Public access is listed as yes.
Explore Queneska Island Lake across LakeQuality
Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
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Where this data comes from
29 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ29 samples · 2020–2022
Analytical methods
- EPA approved Alternate Test Procedure for 4500 P H. Has a 28 day hold without acid preservation.
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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