Hardwood Pond
Lamoille County, VermontView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- #6 of 6 in the county
- 34 ft max depth
- Limited data
Hardwood Pond in Lamoille County, Vermont has a water quality grade of C (Fair). Water clarity: 6.9 ft visibility. Phosphorus: 16.8 µg/L.
- Clarity
- 6.9 ft
- Max depth
- ~34 ft est.
- Type
- Mesotrophic
- Phosphorus
- 16.8 µg/L
- Trend
- ↓ Declining
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Watch Hardwood Pond’s letter
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Hardwood Pond is a mesotrophic lake in Lamoille County, Vermont with an estimated average depth of about 34 feet. Water quality is graded C based on 1 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 5 other monitored lakes in Lamoille County, Hardwood Pond ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2024-04-23. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
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 C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Moderate clarity, visible to about 6.9 ft. Phosphorus 16.8 µg/L. TSI 47. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.9 ft | Not graded |
| Phosphorus | 16.8 µg/L | Fair |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~34 ft est. |
| Average Depth | ~13 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Hardwood Pond.
Lake Size & Watershed
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.
Fishing Hardwood Pond
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.043 m/yr | 3 |
| Phosphorus | ↓ Declining | +1.36 µg/L/yr | 3 |
County Ranking
Ranked #6 of 6 lakes in Lamoille County
Nearby Lakes With Higher Grades
Hardwood Pond holds Grade C. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Lamoille County
Frequently asked questions about Hardwood Pond
Where is Hardwood Pond?
- Hardwood Pond is a lake in Lamoille County, Vermont. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Hardwood Pond?
- Hardwood Pond in Lamoille County, Vermont has a water quality grade of C (Fair). Water clarity: 6.9 ft visibility. Phosphorus: 16.8 µg/L.
Is Hardwood Pond safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Hardwood Pond?
- No published bathymetric survey covers Hardwood Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 34 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Hardwood Pond across LakeQuality
2 documented falls within 13.6 mi, nearest Moss Glen Falls
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Moderate nutrients, good water quality
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Where this data comes from
52 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ52 samples · 2020–2024
Analytical methods
- 4500 P H ~ Manual Digestion and Flow Injection Analysis for Total Phosphorus
- 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
- 2120 B ~ Color in Water by Visual Comparison
Monitoring station identifiers (1)
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)