Marys Pond is a cold, clear oligotrophic lake in Plymouth County, Massachusetts. Water quality is graded A based on 1 sampling years through 2018. Compared to the 16 other monitored lakes in Plymouth County, Marys Pond ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Massachusetts DNR, last sampled 2018-09-06. Grade methodology: LakeGrade methodology.
Watch Marys Pond water quality
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
No clarity data. Chlorophyll-a: 2.6 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 2.6 µg/L | A |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Marys Pond
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Fishing Marys Pond
Location
County Ranking
Ranked #3 of 17 lakes in Plymouth County
Nearby Lakes in Plymouth County
Explore Marys Pond across LakeGrade
Species activity outlook by water temperature and season
Where to stay at Massachusetts's top lakes, each with its grade
Low nutrients, clear water, excellent for swimming
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Top 25 by Secchi water clarity
Grade A/B + low algae filter
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More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2018-09-06
Monitoring stations: 1