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  • Terry Gronwall

Monday May 29th, 2023 Honeoye Lake Water Quality

Surface Water Temperature: ~68.0 F

Water Clarity: ~13.1 Feet

Lake Level: 803.7 Feet above sea level

Lake level relative to long term average lake level: +0.2 Feet

Observations: Monday (5/29/23), Over the last week the water clarity decreased by ~4.9 feet to ~13.1 feet and the surface water temperature increased by ~6.1 F to ~68.0 F. We did not visually see any signs of a blue-green algae bloom today. Good dissolved oxygen levels at all water depths. It was a beautiful spring day to be out on Honeoye Lake!

We are still seeing a lot of Spirogyra, a green filamentous algae, in shallow water over the last several of weeks. Picture on left.

Also, we are seeing a lot of Curly Leaf Pond Weed, an early season aquatic plant, growing to the lake surface in our unusually clear water this spring. It typically dies off naturally in late June. It’s leaf’s look like Lasagna. Pictures below:

The HVA lake level device is now working again. The HVA and HLWTF web site lake level links are now being updated several times a day. honeoye_lake_level_30.jpg (800×400) (

Please report any Honeoye Lake HABs you observe to us and DEC by submitting a HABs report at:

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:


Since the lake level is currently only a few inches above normal. The Sheriff's Office has lifted it's "No Wake Order". We thank you for complying with the Sheriff's No Wake order.


Please click on this link for the Winter 2023 HLWTF Newsletter:


May FLCC Muller Field Station Events

Click on the link below to see the May Muller Field Station Newsletter:


New York Safe Boating Class Certificate will be required of all boaters on this schedule:

If born on or after: You will need boating safety certificate to operate motorized vessel in:

January 1, 1988 2022

January 1, 1983 2023

January 1, 1978 2024

All operators of motorized vessels, regardless of age, will need a boating safety certificate by January 1, 2025.

Click on the link below for more information and the schedule of local NYS Safe Boating classes:


Honeoye lake is included in the DEC's Big Panfish Study. Please click on the link below to read their Interim report:


Please visit the Honeoye DEC Project website for more information on the Honeoye Lake Nutrient Inactivation (Alum Treatment) Project: Honeoye Lake Nutrient Inactivant Pilot Study (


- Click on this link to see the new HLWTF Honeoye Lake Watershed Storm Water Took Kit if you are planning any storm water projects on your property:


Click on the blue outlined box that says "Log in / Sign up" in the upper right-hand corner of this page to sign-up to be notified when we update our weekly Honeoye Lake water quality blog.


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