Copper Sulfate will be applied to Kinderhook Lake for algae control on
Monday morning, August 17, 2026
Please see https://kinderhooklakecorp.org/faq/ for information and warnings.
Saturday, August 1, noon to 2:00pm – Annual Community Lake Day at One Tree.
The KLC’s Annual Community Lake Day will take place on Saturday, August 1st, from 12 to 2 pm on One Tree Island. Enjoy some time with your family and neighbors and by all means, make a few new friends. KLC Directors will be available to discuss any lake-related issues. KLC merchandise will also be available.
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Burgers, dogs, and soft drinks are on the house. Lake Day Raffle tickets are almost sold out, $20 each – $5,000 in cash prizes. Check with any KLC Director to see if there are tickets available. The prize drawing will take place at 2 pm. Money raised from the raffle will be used to support the many KLC programs that help improve the lake and dam. |
This event brings out dozens of large and small boats and usually well over 100 party-goers. Please be considerate of the no-wake zones around One-Tree, and even though boat stewards will be available to help, be careful when docking or anchoring your boats.
Sunday August 2, 1:30 to 3:30pm – Free Concert on the lake by the Ghent Band.
Anchor your boats just south of One Tree in the middle bay and enjoy a free concert by The Ghent Band. Bring some snacks and drinks, tie up in flotillas if you like, and enjoy the afternoon as the Ghent Band plays along the eastern shore of the middle bay. Thanks to Michael Knabbe for hosting this event.
Copper Sulfate will be applied to Kinderhook Lake
for algae control on
Monday morning, July 27, 2026
See the FAQ page for information and warnings
Copper Sulfate will be applied to Kinderhook Lake
for algae control on
Thursday morning, July 9, 2026
See the FAQ page for information and warnings
July 4th is just around the corner. We hope you are preparing for a perfect holiday weekend.
Kayak Rally: 
Start anywhere on the lake at 8:30am using any non-motorized watercraft and race to collect tickets from various flagged locations around the lake. Bring your tickets to 9 Old West Shore Dr in Valatie between 11:30 & 12:00 to be entered into a drawing for KLC merchandise. Don’t forget a pen to write your name and phone on the tickets and a baggie to keep them dry.
We are still looking for shoreline volunteers to fly orange flags and distribute tickets to rally participants. If you are willing to help, please call Pete at (914) 217-6770.
Boat Parade: 
Decorate your boats and meet at One Tree Island at 1:30pm to follow the lead boat around the lake and show off your creation. $50 will be awarded to the Most Patriotic, Most Unique, and Funniest boats. Please note that although the boat parade is open to the entire community, only current KLC members are eligible for prizes.
Ring of Fire: 
Light your flares along the shoreline at 9:00pm and enjoy the evening. Flares will be available July 4th at 9 Old West Shore Dr in Valatie between 9:00am – noon.
Merchandise:
KLC logo merchandise, as well as flares for the Ring of Fire, will be available on July 4th at 9 Old West Shore Dr in Valatie between 9:00am and noon, or call Pete at (914) 217-6770.
Kinderhook Lake will be treated with ProcellaCor
to control Eurasian watermilfoil in accordance with our DEC permit on
Wednesday, June 24, 2026
To ensure the treatments’ success and comply with regulations, please note the following:
- NO IRRIGATION: Lake water should not be used for irrigation or livestock watering for about one week following the treatment (until concentrations of the active ingredient are below 1ppb).
- NO BOATING: No boating throughout the day of treatment. Wake and water movement can disturb or redistribute the herbicide away from the intended target—milfoil.
- NO SWIMMING: No swimming permitted on the day of treatment.
Signage will be posted around the lake prior to the treatment and removed once the irrigation restriction is lifted. Notifications will also be posted here on the KLC website and our Facebook Page.
Raise your glasses and toast a milfoil-free lake for another few years!
Invasive water chestnuts are emerging in many shallow areas of the lake. While our harvester can remove water chestnuts in water greater than 3-feet deep, hand-harvesting is the only successful way to remove water chestnuts in shallow water. Therefore, two (2) water chestnut hand-harvesting events are scheduled for this summer:
- Saturday, June 27, 10:00am to noon.
- Saturday, July 11, 10:00am to noon
Please meet at the north end of the lake with any vessel that can navigate shallow water (kayak, canoe, raft, paddle board, john boat, etc.). Please bring your work gloves and perhaps a small rake if you have one. We will be collecting water chestnuts by hand and transferring them to the Eco-Harvester for disposal. No experience needed. Some light refreshments will be available.If the weather forecast calls for heavy rain or thunderstorms, each event will take place on the Sunday following the scheduled event, June 28 or July 12. Please check back here or our Facebook page on the Friday before each event for any weather postponements.
Copper Sulfate will be applied to Kinderhook Lake
for algae control on
Monday morning, June 15, 2026
See the FAQ page for information and warnings
Membership and Merchandise Days
9:00 AM to Noon
Saturday – April 25 and May 9
9 OLD West Shore Drive, Valatie
(the tan metal building with green trim and roof)
Time again to support the many programs that help keep Kinderhook Lake a beautiful community resource by purchasing a KLC membership and making donations to our dedicated funds. At the same time, you pick up your membership poster, launch gate key, and car/trailer sticker; no waiting for them to arrive by snail mail. KLC Directors will be available to answer your questions, plus KLC logo merchandise will be available on both days.
Of primary importance this year is the ProcellaCor Fundraiser for the treatment of invasive Eurasian milfoil. We’ve been almost milfoil-free for five summers since treating the lake with ProcellaCor in 2021 – and it’s time for a new treatment. Thanks to the generosity of our supporters, we’ve already raised over $74,000 and reached ~59% of our $125,000 fundraising goal. But we need approximately $51,000 more for a full treatment – partial treatments are not an effective option. Donations to the Weed Management Fund will help us continue this essential work and ensure a cleaner, healthier lake for everyone to enjoy.
The seasonal lake refill is scheduled to begin on Saturday, April 4, 2026. The flashboards will be added on top of the main spillway and the sluice gate will be closed in accordance with our DEC permit.
With lake levels currently reduced, this is your final opportunity to complete any dock installation, waterfront repairs, or shoreline work before rising water makes access difficult or impossible. Lakefront property owners are encouraged to make full use of this weekend (March 29–30) and the week of March 31–April 3 to finish all necessary work.
Please ensure all equipment, materials, and personnel are off the lakebed before the refill begins on April 4. The rate at which the lake reaches summer level will depend, as always, on rainfall and remaining snowmelt in our watershed.
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