Providence County Lake Quality
Rhode Island, 2 lakes — no lake here has enough monitoring data for a grade
Only 2 lakes in Providence County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Killingly Pond (—); the most-stressed is Killingly Pond (—).
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Quick Answers for Providence County
Planning a trip? Check special fishing regulations for Killingly Pond — or check the official Rhode Island fishing regulations.
All Lakes in Providence County
2 lakes · 0 graded, 2 not rated0 graded lakes · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NRKillingly PondProvidence | NR | No recent samples | 6 µg/L | 0.9 µg/L | No recent samples | Not recorded | |
| NRSpring Grove PondProvidence | NR | 5.9 ft | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: the monitoring record does not meet the evidence bar for a grade. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Rhode Island
See how Providence County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 49 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.