Lake Runnemede
Windsor County, Vermont63 acresView mapDirections
Vermont DEC publishes the water-quality measurements for Lake Runnemede. Here is what has been measured.
- Mesotrophic
- 21 ft max depth
Lake Runnemede in Windsor County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 8.2 ft visibility. Phosphorus: 22.9 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Surface area: 63 acres.
Lake Runnemede is a 63-acre mesotrophic lake in Windsor County, Vermont with an estimated average depth of about 21 feet. Phosphorus level is declining over recent sampling years. Compared to the 7 other monitored lakes in Windsor County, Lake Runnemede ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-13. Methodology: how these readings are compared.
Lake Runnemede covers about 63 acres in Windsor County. If you are planning to stay, you can search lake houses and cabins around Lake Runnemede on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
Readings onlyModerate algae
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 Lake Runnemede is safe to swim in today is a call for the Vermont Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Runnemede
These are the measurements Vermont DEC publishes for Lake Runnemede, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.2 ft. Phosphorus 22.9 µg/L. Chlorophyll-a 4.2 µg/L. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 22.9µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 4.2µg/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. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake Runnemede
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~21 ft est.
Surface area
63 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Lake Runnemede.
Lake Size & Watershed
Watershed (drainage) area
51 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.9 mi
HydroLAKES / HydroSHEDS
Elevation
325 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Stays via Stay22
Stays near Lake Runnemede
Compare lakeside cabins, hotels, and vacation rentals near Lake Runnemede in Windsor County, Vermont — 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 Runnemede
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Fishing Lake Runnemede
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Stable3 years
Phosphorus
Worsening+1 µg/L/yr5 years
Chlorophyll-a
Improving-0.28 µg/L/yr5 years
Reservoir Info (USACE NID)
Lake Runnemede is a man-made reservoir impounded by the Lake Runnemede (completed 1883), built primarily for recreation on the Connecticut River-Tr; earth-type dam, 15 ft tall and 1,080 ft long.
- Surface area
- 63 ac
- Normal storage
- 0 ac-ft
- Max storage
- 595 ac-ft
- Drainage area
- 0.23 sq mi
- Hazard class
- Significant
- Owner
- TOWN OF WINDSOR
Source: USACE National Inventory of Dams, NID ID VT00229 · Operator website
Nearby Lakes in Windsor County
Frequently asked questions about Lake Runnemede
Where is Lake Runnemede?
- Lake Runnemede is a lake in Windsor County, Vermont. Its water-quality measurements are published by Vermont DEC and shown on this page as reported.
What is the water quality of Lake Runnemede?
- Lake Runnemede in Windsor County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 8.2 ft visibility. Phosphorus: 22.9 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Surface area: 63 acres.
Is Lake Runnemede safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Runnemede?
- No published bathymetric survey covers Lake Runnemede, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 21 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 63 acres.
Explore Lake Runnemede across LakeQuality
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Mesotrophic Lakes in Vermont
Where this data comes from
95 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ95 samples · 2020–2025
Analytical methods
- EPA approved Alternate Test Procedure for 4500 P H. Has a 28 day hold without acid preservation.
- 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
Lake size & watershed from HydroLAKES (HydroSHEDS)