Worcester County, Massachusetts · Water Quality Report Card
Patch Reservoir
Patch Reservoir in Worcester County, Massachusetts is not rated for water quality — its monitoring record does not meet the evidence bar.
Patch Reservoir is a lake in Worcester County, Massachusetts.
Source: EPA Water Quality Portal sampling records, MassDEP, last sampled 2020-10-30. Grade methodology: LakeGrade methodology.
Watch Patch Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data |
Where to stay near Patch Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Patch Reservoir in Worcester County, Massachusetts — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Patch Reservoir
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Patch Reservoir?
Get lake water-quality report cards plus the best cabin & lodging deals near Patch Reservoir — straight to your inbox. No spam, unsubscribe anytime.
Planning a whole trip? See where to stay at Massachusetts’s top lakes →
Fishing Patch Reservoir
Location
Nearby Lakes in Worcester County
Explore Patch Reservoir across LakeGrade
More Massachusetts Lake Rankings
Top 25 by overall water quality score
Top 25 by Secchi water clarity
Grade A/B + low algae filter
Panfish-rich, public access
Full state directory
Other Lakes in Massachusetts
More records, surveys & data sources
Where this data comes from
19 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS19 samples · 2020
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
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2020-10-30
Monitoring stations: 1