Seneca Lake Platform
Seneca County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Seneca Lake Platform. Here is what has been measured.
- Mesotrophic
- Public access
- Limited data
Seneca Lake Platform in Seneca County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 11.5 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 2.8 µg/L.
Seneca Lake Platform is a mesotrophic lake in Seneca County, New York. Limited fish-species data available. Public access is available with 3 public boat landings.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-10-20. Methodology: how these readings are compared.
What Seneca Lake Platform is good for
From access and monitoring records, not editorial picks.
- Clear water11.5 ft of visibility
- Boat launch3 documented ramps
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Seneca Lake Platform is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Seneca Lake Platform
These are the measurements NY DEC publishes for Seneca Lake Platform, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 11.5 ft. Phosphorus 8 µg/L. Chlorophyll-a 2.8 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 8µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.8µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 39 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Seneca Lake Platform
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Oak Island, Mile 12.36Public
- Seneca Lake State Park, Mile 17.1Public
- Geneva, Mile 17.51Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Seneca Lake Platform
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Fishing Seneca Lake Platform
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Seneca Lake Platform under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Marsh Creek WwtpGeneva · 3 mi away · NPDES NY0027049MajorRecent violation
- Hillside Water Resource Recovery FacilityRomulus, Town Of · 4.7 mi away · NPDES NY0272116Recent violation
- Atlantic Service StationOntario · 2.8 mi away · NPDES NY0229059
- Long Meadow Mobile Home CourtWaterloo · 4.6 mi away · NPDES NY0099198
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.
Nearby Lakes in Seneca County
Frequently asked questions about Seneca Lake Platform
Where is Seneca Lake Platform?
- Seneca Lake Platform is a lake in Seneca County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Seneca Lake Platform?
- Seneca Lake Platform in Seneca County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 11.5 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 2.8 µg/L.
Is Seneca Lake Platform safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Seneca Lake Platform?
- Seneca Lake Platform has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Oak Island, Mile 12.36, Seneca Lake State Park, Mile 17.1, Geneva, Mile 17.51. Public access is listed as yes.
Can I fish at Seneca Lake Platform?
- Seneca Lake Platform has 3 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by New York's fish and wildlife agency, so check its current regulations before you go.
Explore Seneca Lake Platform across LakeQuality
16 mi away · cable-pulled, no boat wake
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Where this data comes from
108 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS New York Water Science Center
USGS-NY108 samples · 2020
Analytical methods
- P, wu, WCA, persulfate CF color
- Plant pigments, sonication & 445
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory