Lake Winchester
Lake Winchester in Litchfield County, Connecticut is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 250 acres.
- Area
- 250 acres
- Public access
- Yes
Why Lake Winchester has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Winchester, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Winchester is a 250-acre lake in Litchfield County, Connecticut. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-11-18. Grade methodology: LakeGrade methodology.
Watch Lake Winchester water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Winchester
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Lake Winchester
Compare lakeside cabins, hotels, and vacation rentals near Lake Winchester in Litchfield 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.
Top-rated places to stay near Lake Winchester
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 250 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Winchester, so its depth is not documented here.
Recreation & Access
- Winchester LakePublic
- Park PondPublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Winchester
Reservoir Info (USACE NID)
Lake Winchester is a man-made reservoir impounded by the Winchester Lake Dam, built primarily for recreation on the E Br Naugatuck River; earth-type dam, 23 ft tall and 675 ft long.
- Surface area
- 250 ac
- Normal storage
- 2,280 ac-ft
- Drainage area
- 2.19 sq mi
- Hazard class
- Significant
- Owner
- Connecticut DEEP
Source: USACE National Inventory of Dams, NID ID CT00105 · Operator website
Graded lakes near Lake Winchester
Lake Winchester has no grade, but these lakes within a short drive do.
Nearby Lakes in Litchfield County
Frequently asked questions about Lake Winchester
Where is Lake Winchester?
- Lake Winchester is a lake in Litchfield County, Connecticut. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Lake Winchester?
- Lake Winchester in Litchfield County, Connecticut is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 250 acres.
Is Lake Winchester safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Winchester is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Lake Winchester?
- Lake Winchester has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Winchester Lake, Park Pond. Public access is listed as yes.
Explore Lake Winchester across LakeGrade
More Connecticut Lake Rankings
Other Lakes in Connecticut
Where this data comes from
3 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Connecticut Department Of Energy And Environmental Protection
CT_DEP01_WQX3 samples · 2024
Analytical methods
- Total Phosphorus After Block Digestion
- 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
Named boat-access points from the USGS National Boat Ramps inventory