Lake Kenosia
Lake Kenosia in Fairfield County, Connecticut has a water quality grade of D (Nutrient-rich). Phosphorus: 50 µg/L. Chlorophyll-a (algae): 17.4 µg/L.
- Type
- Eutrophic
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Kenosia →
Lake Kenosia is a productive, nutrient-rich eutrophic lake in Fairfield County, Connecticut. Water quality is graded D based on 2 sampling years through 2023. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 3 other monitored lakes in Fairfield County, Lake Kenosia ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-07-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 50 µg/L. Chlorophyll-a: 17.4 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 50 µg/L | Poor |
| Chlorophyll-a (Algae) | 17.4 µg/L | Not graded |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Kenosia
Compare lakeside cabins, hotels, and vacation rentals near Lake Kenosia in Fairfield County, Connecticut — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lake Kenosia are listed below.
Top-rated places to stay near Lake Kenosia
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Recreation & Access
- Lake KenosiaPublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Kenosia
EPA Impairment Status
Lake Kenosia is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit CT6600-01-1-L3_01 · Official waterbody report · Matched by proximity (0.38 km)
County Ranking
Ranked #3 of 4 lakes in Fairfield County
Nearby Lakes in Fairfield County
Frequently asked questions about Lake Kenosia
Where is Lake Kenosia?
- Lake Kenosia is a lake in Fairfield County, Connecticut. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Kenosia?
- Lake Kenosia in Fairfield County, Connecticut has a water quality grade of D (Nutrient-rich). Phosphorus: 50 µg/L. Chlorophyll-a (algae): 17.4 µg/L.
Is Lake Kenosia safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Lake Kenosia has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 17.4 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Lake Kenosia?
- Lake Kenosia has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Kenosia. Public access is listed as yes.
Explore Lake Kenosia across LakeGrade
More Connecticut Lake Rankings
Other Grade D Lakes in Connecticut
Eutrophic Lakes in Connecticut
Where this data comes from
10 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Connecticut Department Of Energy And Environmental Protection
CT_DEP01_WQX10 samples · 2023
Analytical methods
- Total Phosphorus After Block Digestion
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Nitrate-Nitrite Nitrogen by Colorimetry
- Turbidity by Nephelometry
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
Named boat-access points from the USGS National Boat Ramps inventory