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  • Terry Gronwall

June 30, 2020 Honeoye Lake Update (Click Here)

Surface Water Temperature: 76.5 F

Water Clarity: 14.75 Feet

Lake Level: 803.1 Feet above sea level

Lake Level Relative to Weir: -0.4 Feet

Observations: Monday & Tuesday (6/29/20 & 6/30/20), There was a light Gloeotrichia (blue-green algae) bloom visible in the water column. We did not see any surface algae scum in near shore areas. Gloeotrichia is an early summer species of blue-green algae that gets its nutrients directly from the bottom sediments during the winter and spring.

Water clarity has declined to 14.75 feet since last week. However, this is still almost 2X higher than we usually see in late-June (Water Clarity ~8 Feet).

We collected aquatic vegetation data earlier this week for use by our weed harvester team when they start this summer’s weed harvesting program next week (7/6). We found a significant increase in the amount of aquatic vegetation growing to the surface due to the increase in water clarity this summer. To see our aquatic vegetation maps for late-June 2020 versus late-June 2020 go to:

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:

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