Conesus Lake
Livingston County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Conesus Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 65 ft max depth
- Limited data
Conesus Lake in Livingston County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 10.7 ft visibility.
Conesus Lake is a lake in Livingston County, New York with an estimated average depth of about 65 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-28. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Conesus Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Conesus Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.7 ft of visibility
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Conesus Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
Whether Conesus Lake 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 Conesus Lake
These are the measurements NY DEC publishes for Conesus Lake, 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 10.7 ft. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Conesus Lake
Answers come straight from the public measurements and survey records on this page.
Current Conditions
USGS snapshot Jul 6, 2026, 4:45 AM from gauge 04227980 (Conesus Lake Near Lakeville NY). Station page ↗ — a live reading replaces this snapshot when the gauge responds. Missing live data is not an all-clear.
→ Conesus Lake water level: the live USGS gauge reading
Lake Details
Max depth
~65 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. New York has not published bathymetry for Conesus Lake.
Lake Size & Watershed
Watershed (drainage) area
73 sq mi
HydroLAKES / HydroSHEDS
Surface area
3,106 acres
HydroLAKES / HydroSHEDS
Shoreline
17.5 mi
HydroLAKES / HydroSHEDS
Elevation
810 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Stays near Conesus Lake
Compare lakeside cabins, hotels, and vacation rentals near Conesus Lake in Livingston County, New York — 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 Conesus Lake
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Fishing Conesus Lake
EPA Impairment Status
Conesus Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY0402-0004 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Conesus Lake under Clean Water Act (NPDES) discharge permits.
- Cambier PropertyConesus · 1.7 mi away · NPDES NY0245747
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 Livingston County
Frequently asked questions about Conesus Lake
Where is Conesus Lake?
- Conesus Lake is a lake in Livingston 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 Conesus Lake?
- Conesus Lake in Livingston County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 10.7 ft visibility.
Is Conesus Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Conesus Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), oxygen depletion (low DO). Check local advisories before you swim.
How deep is Conesus Lake?
- No published bathymetric survey covers Conesus Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 65 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
What is the water level at Conesus Lake?
- The USGS snapshot on this page for Conesus Lake is 818.05 ft of water-surface elevation, recorded Jul 6, 2026, 4:45 AM at gauge 04227980. Current Conditions hydrates a live NWIS reading from that same station when the gauge responds. A missed live fetch is not an all-clear.
Explore Conesus Lake across LakeQuality
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Where this data comes from
16 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
NALMS16 samples · 2020
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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)