top of page
  • Terry Gronwall

Monday June 24, 2024 Honeoye Lake Water Quality. June Muller Field Station Newsletter.

Muller Field Station Honeoye Inlet European Frogbit Pulls.                            

Town of Richmond update on plans for Mill Creek & Outlet Creek.


Monday June 24, 2024 Honeoye Lake Water Quality


Surface Water Temperature: ~75.9 F

Water Clarity: ~11.2 Feet

Lake Level: 803.2 Feet above sea level 


Observations: Monday (6/24/24), Water clarity was ~11.2 about 1.2 feet higher than last Sunday.  The surface water temperature increased ~4.7 F to ~75.9 F from last Sunday due to the warmer weather we have had over the last week.  A very windy today on Honeoye Lake!


We found increasing amounts of Gloeotrichia (lots of small spikes) today both in near shore areas and open water in the water column.  We also found sparce amounts of Anabaena (Dolchospermum) (looks like a spring) and Aphanizomenon (looks like a leaf) for the first time this summer.  You should be watchful for Gloeotrichia, Anabaena, and Aphanizomenon blooms lake wide.  These are all blue-green algae species.  Due to the high wind, we were not able to check our 10 near shore locations for blue-green algae blooms today.  The Sandy Bottom Park Swimming Beach has been closed due to a blue-green algae bloom over the last week.  Expect to see Gloeotrichia, Anabaena, Aphanizomenon blooms over the next few weeks particularly when we have 80-90 F days with calm winds.  See pictures on left and below:  More information on Gloeotrichia and Anabaena can be found at: 


Several research studies have found that most of the phosphorus that fuels Honeoye Lake’s blue-green algae blooms is released from the lake bottom sediments when the lake’s dissolved oxygen level goes below 0.50 mg/L in the deeper parts of the lake.  The dissolved oxygen (DO) level near the lake bottom at ~8.5 m (~28 feet) was only 0.35 mg/L today.  This means that phosphorus may be released into the deepest part of the lake water near the lake bottom at this time.  When we have a lake mixing event this phosphorus will be mixed into the whole water column potentially, depending on how long the lake stays stratified, fuel a more intense blue-green algae bloom. Lake was stratified at ~7 m (~23 feet) deep.  See temperature and DO graphs to the above.


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:


Muller Field Station Honeoye Inlet European Frogbit Pulls Summer 2024

An emergent population of European frogbit (Hydrocharis morsus-ranae), an undesirable invasive species, was first detected in the Honeoye Inlet last summer.  In hopes of curtailing this population from further spread, Muller Field Station is hosting three community pulls/monitoring surveys this summer in partnership with Finger Lakes Partnership for Regional Invasive Species Management (PRISM) and New York State Department of Environmental Conservation (DEC). Canoes, paddles, and life jackets provided. Plan to arrive 15 minutes prior to start time to account for parking, getting prepped for paddle, etc.  Come prepared with water, lunch, and proper attire to paddle- rain or shine. Events will be cancelled in event of thunderstorms.  Limited number of participants will be accepted for each event. A separate registration form is required for every participant.  Please RVSP no later than two days before scheduled event using the link below: 

Wednesday June 5th, 10-1pm

Friday Jun 21st, 10-1pm

Wednesday July 3rd, 10-1pm




The Town of Richmond has posted an update on their plans to address the Mill Creek and Outlet Creek issues on their town web site. You can read their update by clicking on the link below:


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


Click on the link below to see the Honeoye Lake Watershed Task Force 2024 Winter Newsletter:


DEC Big Panfish Initiative (BPI)

The Big Panfish Initiative (BPI) was developed to create destination fisheries for larger size panfish in select waters including Honeoye Lake. The BPI is an experimental program that is being conducted to determine the impacts of lower harvest and minimum size limits on sunfish population age and size structure in select lakes throughout New York and to evaluate the level of angler satisfaction with this management strategy. It also includes an assessment of crappie population age and growth characteristics in select waters to determine if those waters have the potential to yield larger fish under more conservative harvest regulations.

Review complete details in the Big Panfish Initiative Study Plan, 2021-2026 (PDF)

DEC BPI Study Updates can be found on the links below:


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:


- 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. 


168 views0 comments


bottom of page