Ashford Lake
Windham County, Connecticut51 acresView mapDirections
CT DEEP publishes the water-quality measurements for Ashford Lake. Here is what has been measured.
- Limited data
Ashford Lake in Windham County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Water clarity: 5 ft visibility. Surface area: 51 acres.
Ashford Lake is a 51-acre lake in Windham County, Connecticut.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-08-11. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ashford Lake is safe to swim in today is a call for the Connecticut Department of Energy and Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ashford Lake
These are the measurements CT DEEP publishes for Ashford Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5 ft. TSI 54.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5ft | Measured, not scored 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) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 54 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Lake Details
Surface area
51 acres
No bathymetric survey has been published for Ashford Lake, so its depth is not documented here.
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Fishing Ashford Lake
Reservoir Info (USACE NID)
Ashford Lake is a man-made reservoir impounded by the Ashford Lake Dam (completed 1949), built primarily for recreation on the Goss Brook; earth-type dam, 23 ft tall and 450 ft long.
- Surface area
- 51 ac
- Normal storage
- 370 ac-ft
- Max storage
- 715 ac-ft
- Drainage area
- 0.36 sq mi
- Hazard class
- Significant
- Owner
- Ashford Lake Property Owners Association, Inc.
Source: USACE National Inventory of Dams, NID ID CT00462 · Operator website
Nearby Lakes in Windham County
Frequently asked questions about Ashford Lake
Where is Ashford Lake?
- Ashford Lake is a lake in Windham County, Connecticut. Its water-quality measurements are published by CT DEEP and shown on this page as reported.
What is the water quality of Ashford Lake?
- Ashford Lake in Windham County, Connecticut has water-quality measurements published by CT DEEP, shown here as reported. Water clarity: 5 ft visibility. Surface area: 51 acres.
Is Ashford Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
15 measurements from 3 monitoring stations, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- North American Lake Management Society
NALMS12 samples · 2021–2023 - CT DEEP Volunteer Water Monitoring Program (Volunteer)
CTVOLMON3 samples · 2024
Monitoring station identifiers (3)
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.