Middlesex County, Massachusetts · Water Quality Report Card
Farm Pond
Farm Pond in Middlesex County, Massachusetts is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 19.5 ft visibility.
- Clarity
- 19.5 ft
- Type
- Oligotrophic
- Trend
- ↓ Declining
Farm Pond is a cold, clear oligotrophic lake in Middlesex County, Massachusetts. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2021-07-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
Crystal clear, you can see 19.5 ft down. Trophic State Index: 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 19.5 ft | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Farm Pond
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Fishing Farm Pond
Water Quality Trend: ↓ Declining
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -1.3 m/yr | 2 |
Location
Nearby Lakes in Middlesex County
Explore Farm Pond across LakeGrade
Species activity outlook by water temperature and season
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Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Where this data comes from
2 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS2 samples · 2020–2021
Monitoring station identifiers (1)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2021-07-11
Monitoring stations: 1