Spruce Pond
Addison County, VermontView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Nuisance exotic species
- Limited data
Spruce Pond in Addison County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar.
- Trend
- ↑ Improving
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Watch Spruce Pond’s letter
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Why Spruce Pond has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Spruce Pond, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by VT DEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Spruce Pond is a lake in Addison County, Vermont. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2024-04-25. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Spruce Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.
Water quality measurements for Spruce Pond
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Fishing Spruce Pond
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.071 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.78 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -0.24 µg/L/yr | 4 |
EPA Impairment Status
Spruce Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Source: EPA ATTAINS assessment unit VT02-02L02_02 · Official waterbody report · Matched by proximity (1.41 km)
Graded lakes near Spruce Pond
Spruce Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Addison County
Frequently asked questions about Spruce Pond
Where is Spruce Pond?
- Spruce Pond is a lake in Addison County, Vermont. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Spruce Pond?
- Spruce Pond in Addison County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Spruce Pond safe to swim in?
- The letter is not a swimming clearance. Spruce Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.
Explore Spruce Pond across LakeQuality
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Where this data comes from
35 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
1VTDECWQ35 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
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
Impairment status from EPA ATTAINS 303(d) database