Card Pond
Berkshire County, Massachusetts30 acresView mapDirections
MassDEP publishes the water-quality measurements for Card Pond. Here is what has been measured.
- Mesotrophic
- Public access
- Limited data
Card Pond in Berkshire County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 3.4 µg/L. Surface area: 30.1 acres.
Card Pond is a 30-acre mesotrophic lake in Berkshire County, Massachusetts. Limited fish-species data available. Public access is available. Compared to the 7 other monitored lakes in Berkshire County, Card Pond ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2016-09-20. Methodology: how these readings are compared.
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. Check local advisories before you swim.
Whether Card Pond 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 Card Pond
These are the measurements MassDEP publishes for Card Pond, 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 3.4 µg/L. TSI 43.
| 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) | 3.4µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Card Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
30 acres
Public access
Yes
Listed by MassDEP
No bathymetric survey has been published for Card Pond, so its depth is not documented here.
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Fishing Card Pond
Reservoir Info (USACE NID)
Card Pond is a man-made reservoir impounded by the Shaker Mill Pond Dam (completed 1910), built primarily for recreation on the Williams River; earth-type dam, 18 ft tall and 100 ft long.
- Surface area
- 30.1 ac
- Normal storage
- 119 ac-ft
- Max storage
- 466 ac-ft
- Drainage area
- 32.6 sq mi
- Hazard class
- High
- Owner
- Town of West Stockbridge
Source: USACE National Inventory of Dams, NID ID MA00732 · Operator website · Matched by proximity (0.77 km)
Nearby Lakes in Berkshire County
Frequently asked questions about Card Pond
Where is Card Pond?
- Card Pond 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 Card Pond?
- Card Pond in Berkshire County, Massachusetts has water-quality measurements published by MassDEP, shown here as reported. Chlorophyll-a (algae): 3.4 µg/L. Surface area: 30.1 acres.
Is Card Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Card Pond?
- Public access to Card Pond is listed as yes on the lake record. 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 Card Pond across LakeQuality
10.5 mi away · recorded at 72°F
Species activity outlook by water temperature and season
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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.