Lake Raponda
Windham County, VermontView mapDirections
Vermont DEC publishes the water-quality measurements for Lake Raponda. Here is what has been measured.
- Mesotrophic
Lake Raponda in Windham County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 11.3 ft visibility. Phosphorus: 10.1 µg/L. Chlorophyll-a (algae): 2.4 µg/L.
Lake Raponda is a mesotrophic lake in Windham County, Vermont. Overall water quality is improving over recent sampling years. Compared to the 8 other monitored lakes in Windham County, Lake Raponda ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-27. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Lake Raponda, and Booking.com and Expedia search hotels near the lake for your dates.
What Lake Raponda is good for
From access and monitoring records, not editorial picks.
- Clear water11.3 ft of visibility
Swimming conditions
Readings onlyLow 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 Raponda 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 Raponda
These are the measurements Vermont DEC publishes for Lake Raponda, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 11.3 ft. Phosphorus 10.1 µg/L. Chlorophyll-a 2.4 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10.1µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.4µg/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. | 40 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake Raponda
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Lake Raponda
Compare lakeside cabins, hotels, and vacation rentals near Lake Raponda in Windham 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 Raponda
Prices for Oct 23–25, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Vermont’s top lakes →
Follow Lake Raponda’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lake Raponda
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening4 years
Phosphorus
Improving-0.43 µg/L/yr6 years
Chlorophyll-a
Improving-0.42 µg/L/yr6 years
Nearby Lakes in Windham County
Frequently asked questions about Lake Raponda
Where is Lake Raponda?
- Lake Raponda is a lake in Windham 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 Raponda?
- Lake Raponda in Windham County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 11.3 ft visibility. Phosphorus: 10.1 µg/L. Chlorophyll-a (algae): 2.4 µg/L.
Is Lake Raponda safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Raponda across LakeQuality
More lakes in Vermont
Other Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
140 measurements from 2 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ140 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
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (2)
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.