Sunday Pond
Franklin County, New YorkView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
↓ down from A at the last regrade
- Oligotrophic
- #2 of 7 in the county
- Public access
- Limited data
Sunday Pond in Franklin County, New York has a water quality grade of B (Good). Phosphorus: 10.5 µg/L. Chlorophyll-a (algae): 0.6 µg/L.
- Type
- Oligotrophic
- Phosphorus
- 10.5 µg/L
- Chlorophyll-a
- 0.6 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Watch Sunday Pond’s letter
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Sunday Pond is a cold, clear oligotrophic lake in Franklin County, New York. Water quality is graded B based on 1 sampling years through 2023. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 6 other monitored lakes in Franklin County, Sunday Pond ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2023-07-10. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
No clarity data. Phosphorus 10.5 µg/L. Chlorophyll-a 0.6 µg/L. TSI 32. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 10.5 µg/L | Good |
| Chlorophyll-a (Algae) | 0.6 µg/L | Not graded |
| Trophic State Index (TSI) | 32 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Fishing Sunday Pond
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | → Stable | -0.2 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -0.1 µg/L/yr | 2 |
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Sunday Pond under Clean Water Act (NPDES) discharge permits.
- Lands End CampSaranac Lake · 0.4 mi away · NPDES NY0201839
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #2 of 7 lakes in Franklin County
Nearby Lakes in Franklin County
Frequently asked questions about Sunday Pond
Where is Sunday Pond?
- Sunday Pond is a lake in Franklin County, New York. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Sunday Pond?
- Sunday Pond in Franklin County, New York has a water quality grade of B (Good). Phosphorus: 10.5 µg/L. Chlorophyll-a (algae): 0.6 µg/L.
Is Sunday Pond safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Explore Sunday Pond across LakeQuality
Species activity outlook by water temperature and season
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Low nutrients, clear water. The letter is not a swimming clearance.
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Where this data comes from
6 measurements from 1 monitoring station, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS New York Water Science Center
USGS-NY6 samples · 2020–2023
Analytical methods
- P, wu, WCA, persulfate CF color
- Chlorophyll a,fluorometric,uncor
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)