Windsor Lake
Berkshire County, Massachusetts25 acresView mapDirections
MassDEP publishes the water-quality measurements for Windsor Lake. Here is what has been measured.
- Eutrophic
- Impaired · Algal growth
- Public access
- Limited data
Windsor Lake in Berkshire County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 7.5 µg/L. Surface area: 25 acres.
Windsor Lake is a 25-acre productive, nutrient-rich eutrophic lake in Berkshire County, Massachusetts. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 7 other monitored lakes in Berkshire County, Windsor Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2016-09-07. Methodology: how these readings are compared.
What Windsor Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Windsor Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth. Check local advisories before you swim.
Whether Windsor Lake is safe to swim in today is a call for the Massachusetts Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Windsor Lake
These are the measurements MassDEP publishes for Windsor Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Chlorophyll-a 7.5 µg/L. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 7.5µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 50 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Windsor Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
25 acres
Public access
Yes
Listed by MassDEP
No bathymetric survey has been published for Windsor Lake, so its depth is not documented here.
Recreation & Access
- Windsor LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Windsor Lake
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Fishing Windsor Lake
Reservoir Info (USACE NID)
Windsor Lake is a man-made reservoir impounded by the Windsor Lake Dam (completed 1883), built primarily for recreation on the Tributary to Hoosic River; earth-type dam, 20 ft tall and 375 ft long.
- Surface area
- 25 ac
- Normal storage
- 105 ac-ft
- Max storage
- 185 ac-ft
- Drainage area
- 0.44 sq mi
- Hazard class
- High
- Owner
- City of North Adams
Source: USACE National Inventory of Dams, NID ID MA00281 · Operator website
EPA Impairment Status
Windsor Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit MA11016 · Official waterbody report
Nearby Lakes in Berkshire County
Frequently asked questions about Windsor Lake
Where is Windsor Lake?
- Windsor Lake is a lake in Berkshire County, Massachusetts. Its water-quality measurements are published by MassDEP and shown on this page as reported.
What is the water quality of Windsor Lake?
- Windsor Lake in Berkshire County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 7.5 µg/L. Surface area: 25 acres.
Is Windsor Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Windsor Lake is listed impaired under Clean Water Act §303(d) (IR 4C) for algal growth. Check local advisories before you swim.
Are there boat ramps on Windsor Lake?
- Windsor Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Windsor Lake. Public access is listed as yes.
Can I fish at Windsor Lake?
- Windsor Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Massachusetts's fish and wildlife agency, so check its current regulations before you go.
Explore Windsor Lake across LakeQuality
2 documented falls within 13.8 mi, nearest Tannery Falls
6.4 mi away · recorded at 75°F
Species activity outlook by water temperature and season
Where to stay at Massachusetts's top lakes, each with its readings
Massachusetts's cleanest lakes, ranked on agency measurements
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Other Lakes in Massachusetts
Eutrophic Lakes in Massachusetts
Where this data comes from
3 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Massachusetts Department of Environmental Protection (MassDEP)
MASSDEP3 samples · 2016
Analytical methods
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from 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