Reservoir Pond
Windsor County, Vermont32 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
↓ down from A at the last regrade
- Oligotrophic
- #5 of 8 in the county
Reservoir Pond in Windsor County, Vermont has a water quality grade of B (Good). Water clarity: 14.7 ft visibility. Phosphorus: 6.2 µg/L. Chlorophyll-a (algae): 0.8 µg/L. Surface area: 32 acres.
- Clarity
- 14.7 ft
- Area
- 32 acres
- Type
- Oligotrophic
- Phosphorus
- 6.2 µg/L
- Chlorophyll-a
- 0.8 µg/L
- Trend
- ↑ Improving
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Watch Reservoir Pond’s letter
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Reservoir Pond is a 32-acre cold, clear oligotrophic lake in Windsor County, Vermont. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 7 other monitored lakes in Windsor County, Reservoir Pond ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-12. Grade methodology: LakeQuality methodology.
What Reservoir Pond is good for
From access and monitoring records, not editorial picks.
- Clear water14.7 ft of visibility
Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
Good clarity, visible to about 14.7 ft. Phosphorus 6.2 µg/L. Chlorophyll-a 0.8 µg/L. TSI 32. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.7 ft | Not graded |
| Phosphorus | 6.2 µg/L | Good |
| Chlorophyll-a (Algae) | 0.8 µg/L | Not graded |
| Trophic State Index (TSI) | 32 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 32 acres |
No bathymetric survey has been published for Reservoir Pond, so its depth is not documented here.
Fishing Reservoir Pond
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.019 m/yr | 6 |
| Phosphorus | ↑ Improving | -1.95 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.46 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Reservoir Pond is a man-made reservoir impounded by the Reservoir Pond (completed 1920), built primarily for recreation on the Black River; concrete-type dam, 9 ft tall and 200 ft long.
- Surface area
- 32 ac
- Normal storage
- 0 ac-ft
- Max storage
- 140 ac-ft
- Drainage area
- 36.67 sq mi
- Hazard class
- Low
- Owner
- TOWN OF LUDLOW
Source: USACE National Inventory of Dams, NID ID VT00173 · Operator website · Matched by proximity (0.86 km)
County Ranking
Ranked #5 of 8 lakes in Windsor County
Nearby Lakes With Higher Grades
Reservoir Pond holds Grade B. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Windsor County
Frequently asked questions about Reservoir Pond
Where is Reservoir Pond?
- Reservoir Pond is a lake in Windsor County, Vermont. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Reservoir Pond?
- Reservoir Pond in Windsor County, Vermont has a water quality grade of B (Good). Water clarity: 14.7 ft visibility. Phosphorus: 6.2 µg/L. Chlorophyll-a (algae): 0.8 µg/L. Surface area: 32 acres.
Is Reservoir Pond safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Explore Reservoir Pond across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Vermont's top lakes, each with its grade
Low nutrients, clear water. The letter is not a swimming clearance.
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Other Grade B Lakes in Vermont
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Where this data comes from
28 measurements from 2 monitoring stations, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ28 samples · 2024–2025
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.