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  • Terry Gronwall

Monday May 24th, 2021 Honeoye Lake Water Quality

Updated: May 26, 2021

Surface Water Temperature: 69.4 F

Water Clarity: 21 Feet

Lake Level: 803.2 Feet above sea level

Lake Level Relative to Weir: -0.3 Feet

Observations: Monday (5/24/21), The water clarity has increased 7 feet over the last week and the surface water temperature has increased 6.6 degrees Fahrenheit. There was no visible algae in the water column this morning. The lake is stratified between 16-17 feet. This is very early in the season for the lake to be stratified. We will be collecting and posting water quality data weekly now.

There were isolated areas on the lake that appeared to have floating tree pollen, watermeal, and/or a diatom bloom which is common this time of year. We collected a sample to look at under a microscope. We did not see any signs of blue-green algae. However, out of an abundance of caution, we would advise avoiding contact with water that looks like our picture taken today.

Always use your own visual assessment before making contact with the lake water at this time of year as the blue-green algae situation can change daily if not hourly. Please regularly check the DEC HABs alert map for more detailed updates on Honeoye Lake HABs alerts:


- Click on this link for "2021 Honeoye Lake Aeration Engineering Planning Project"

- The NYSDEC has recently released a new report “Feasibility Assessment of Harmful Algal Bloom Management Options for Honeoye Lake and Conesus Lake” as a follow-up to their 2018 Honeoye and Conesus Lake HABs Action Plans. Click on the link below to see report: e6fc30_d6b38d67f78a4162a1351bb06d6f6406.pdf ( This report evaluates various techniques for mitigating Harmful Algae Blooms in Honeoye Lake by preventing the release of legacy phosphorus from the lake bottom sediments.

- Click on this link for the HLWTF Winter newsletter: e6fc30_ef8d01223f42408ba11b3a7a5f83bebe.pdf - Click on this link for "2020 Water Quality: What, Why, What's Next"

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