Collins Pond
Collins Pond in Cumberland County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 14.9 ft visibility.
- Clarity
- 14.9 ft
- Trend
- ↑ Improving
Why Collins Pond has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Collins Pond, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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 your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Collins Pond is a lake in Cumberland County, Maine. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-09-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Collins Pond
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 14.9 ft down. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.9 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Collins Pond
Compare lakeside cabins, hotels, and vacation rentals near Collins Pond in Cumberland County, Maine — 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 Collins Pond
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Fishing Collins Pond
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.162 m/yr | 3 |
Graded lakes near Collins Pond
Collins Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Cumberland County
Frequently asked questions about Collins Pond
What is the water quality grade for Collins Pond?
- Collins Pond in Cumberland County, Maine is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 14.9 ft visibility.
Is Collins Pond safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Collins Pond is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Collins Pond across LakeGrade
More Maine Lake Rankings
Other Lakes in Maine
Oligotrophic Lakes in Maine
Where this data comes from
5 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS5 samples · 2020–2024
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 and data sources.
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: 2024-09-13
Monitoring stations: 1