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11. July 2021 · Comments Off on Water Chestnut Harvesting · Categories: AIS · Tags: , , , , ,

Due to this year’s ProcellaCor treatment that appears to have eradicated most of the Eurasian milfoil in the lake, the EcoHarvester was only used to harvest water chestnuts. Since most of the water chestnuts reside in shallower water at the north end of the lake, the harvester was easily able to pull them out with their roots well before the nutlets had a chance to grow. About 1 acre of water chestnuts was harvested on July 7th in accordance with our DEC permit.

06. July 2021 · Comments Off on July 4th Events · Categories: Events, General Information · Tags: , , ,

After a cloudy and chilly morning, the weather cooperated and July 4th turned out to be a beautiful sunny day. 

The Kayak Rally was attended by 21 paddlers in the morning chill collecting raffle tickets from 32 orange-flagged locations around the lake. Congrats to the raffle winners: 1st prize to Macy Zeilman2nd prize to Holly Kaiser3rd prize to George Longworth. Each raffle winner received KLC merchandise. Also, thanks to all the volunteers who flew orange flags and handed out tickets.

The Boat Parade was another huge success with about 15 beautifully decorated boats touring the perimeter of the lake, cheered on by hundreds of lake community fans. Congratulations to the winners: Most Patriotic boat, the big eagle, by Paul, Kathleen, and Robert Haen; Most Original boat, the pirate boat, by Rick and Cheryl Fitzpatrick; Funniest boat, the jungle boat, by Shelley and Scott Langer. Each winner received cash prizes. Thanks to Mike and Dawn Francoeur for leading the parade. 

And, as always, the annual Ring of Fire was fun to see. Nightime on the lake was a head-spinning adventure and it was a joy to watch all the evening holiday festivities.



































29. June 2021 · Comments Off on Copper Sulfate Treatment – July 1, 2021 · Categories: Water quality, Water treatment · Tags:

******* WARNING *******
Copper Sulfate will be applied to Kinderhook Lake
Thursday morning, July 1, 2021

See the FAQ page for information and warnings
about Copper Sulfate treatment for algae control

25. June 2021 · Comments Off on July 4th Events · Categories: Area news, Events, General Information · Tags:

We are closing in on one of the favorite days to be on Kinderhook Lake – July 4th, Independence Day. The KLC will be hosting the usual array of events including bringing back the popular kayak rally.

Kayak Rally
This event is open to all non-motorized vessels – kayaks, rowboats, canoes, paddleboards, rafts, etc. Between 8:30 and 11:30 AM collect tickets from nearly 30 orange-flagged locations spread around the lake. Write your name and phone number on each ticket. Don’t forget a plastic bag and pen to collect your tickets and keep them dry.
Important, due to the limited space at the launch and anticipated crowds for this event, please bring your tickets to the tan and green metal building at 9 OLD West Shore Dr in Valatie by 12-noon to be entered into the prize drawing. 

Boat Parade
Decorate your boats and meet at One Tree Island at 1:30. Follow the lead boat as you parade around the lake, hootin’ and hollerin’ all the way. Prizes will be awarded to the Most Patriotic, Most Unique, and Funniest boats.

Ring of Fire
Light your flares and torches along the shoreline at 9:00 pm for a lovely bright ring around the lake. The more flares, the better. 

Note: Flares and KLC merchandise will be available at the tan and green metal building at 9 OLD West Shore Dr in Valatie from 10:00 am to 1:00 pm on July 4th. If you need them sooner or cannot make it on the 4th, please call Pete Walkes at 914-217-6770.

20. June 2021 · Comments Off on ProcellaCor Herbicide Treatment – June 22, 2021 · Categories: AIS, General Information, Water treatment · Tags: , ,


Kinderhook Lake will be treated with ProcellaCor,
an aquatic herbicide used for the control of Eurasian milfoil

Tuesday, June 22, 2021

is permitted on the day of the treatment

is permitted until herbicide concentrations 
are tested below 1ppb,
expected approximately 7 days after the treatment

Treatment notifications will be posted 24 hours prior to the treatment date
and removed when concentration levels are acceptable for irrigation,
expected approximately 7 days following the treatment date

Note: ProcellaCor will be applied by an airboat with weighted sub-surface drag-lines

02. June 2021 · Comments Off on ProcellaCor Update 1 · Categories: AIS, Update · Tags: , ,

As we move into June, we can see that the Eurasian milfoil is flourishing all around the lake. This is actually a good thing because ProcellaCor is most effective when milfoil is in full growth mode; it will allow the plants to better absorb the herbicide all the way down to the roots. Our DEC permit application has already been approved and, weather permitting, we hope to be treating the milfoil with ProcellaCor during the third week of June. For those of you not aware of what we are up to, please see our 14 January 2021 post below.

During a pre-treatment weed survey of the lake in early May, an additional 46 acres of milfoil were identified by Burden Aquatics, expanding the milfoil beds from 160 acres to over 200 acres. DEC has already amended our permit to include the additional acreage as it is critical that we address this issue now before it gets even worse.

Although ProcellaCor is absorbed by the milfoil within the first 3-6 hours after treatment, it will take weeks to see evidence of the results. Here is what you can expect to see.

  • One week after treatment, the plants should still be standing but may look sad and begin to wilt.
  • At the end of week 2, half the plants may still be standing but will have turned brown and brittle.
  • By the end of week 3, most of the plants (but not all) will have fallen to the bottom of the lake.
  • By the end of week 4, it will be difficult to detect any evidence of the plants. 

A couple of things to be aware of, (1) milfoil that has not germinated at the time of the ProcellaCor treatment will not be affected and growth may begin later in the summer, and (2) milfoil fragments, whether floating or within the water column, will likely not be affected by the ProcellaCor treatment and may start new growth later in the season or next year. If you see weeds floating around your dock or shoreline, please try to remove them from the lake to reduce the potential of them starting new plant growth.

The treatment date will be posted on the KLC Facebook page as well as on our website as soon as it is confirmed. As required by DEC, signage will be posted around the lake 24-hours before the treatment date. As a reminder, there will be an irrigation restriction for up to 5-days after the treatment and a swimming restriction on the day of the treatment.

Although there are no other legal restrictions, we ask that all boats stay off the lake the day of the treatment. Boating activity will cause additional water movement that may disperse and dilute the herbicide and potentially make it less effective.

We are proud to say that our members have been very generous this year and we have almost reached our goal to raise the $70,000 needed to treat the original 160 acres. However, treating the extra 46 acres identified this spring will cost an additional $20,000, so we are raising our fundraising goal to $90,000. We ask those of you who have not yet donated to the ProcellaCor Fund to please consider doing so now. We also ask those of you who have already donated to please consider an additional donation to help offset the cost of treating the additional acreage. For donation information, please click the link at the top of this page or in the right-hand column.

Remember, based on the reported experience at other lakes, this ProcellaCor treatment should be effective for up to three years. While the lake will never be 100% weed-free, we can look forward to many years of boating and recreational activities not hampered by enormously thick beds of milfoil.

07. March 2021 · Comments Off on Commence Raising the Lake to Summer Level – April 3 · Categories: Drawdown, General Information, Update

Every spring, shortly after the ice is off the lake, we crank down the sluice gate, add the flashboards back on top of the dam, and begin to raise the lake to summer level in accordance with our DEC permit. This year, that activity will start on April 3rd. Depending on the weather and water flow through the Valatiekill from our 41 square mile watershed, raising the lake fully will take anywhere from a week to over a month. 

If you are a shoreline owner, please take some time before April 3rd to rake and clean out the lake bed in front of your property. Rotting leaves provide nutrients that spur the growth of aquatic invasive species and twigs and branches can float down to the dam and clog the outlet as well as create a hazard for boaters.


21. February 2021 · Comments Off on Winter 2021 KLC News · Categories: General Information, Newsletter

The Winter 2021 KLC News is now available HERE and on our NEWSLETTERS page.

Articles include: Expanding Our Weed Management Program, 2020 Summary of Harvesting Operations, Annual Notice of Copper Sulfate Treatment, A Quick Look Back, Membership and Merchandise Days, Parking at the Launch, Dates to Remember

30. January 2021 · Comments Off on Northern Pike Ice Fishing Contest – February 20th · Categories: Events, Fishing

Ice conditions permitting, the KLC will hold a Northern Pike Ice Fishing Contest on Saturday, February 20, 2021. The contest will be free to the public between 7:00am and 2:00pm. From 2:00pm to 4:00pm, Northern Pike will be accepted for disposal at the large metal building at 9 Old West Shore Drive in Valatie. Only fish caught within the legal size and bag limit per person will be accepted. See Statewide Angling Regulations at KLC merchandise prizes will be awarded to those individuals with the longest fish and most fish. Membership applications, member window placards, boat launch keys, trailer stickers, and merchandise will be available for sale.

Although this Contest will be open to the public and no entry fee is required, anglers who are not lake-front property owners will require permission from a Kinderhook Lake property owner to access the lake. Please respect private property.

Contact or if you have any questions about this event.

Check back here and on our Facebook page to see any updates related to the Contest. 

14. January 2021 · Comments Off on It’s Time to Expand Our Weed Management Program · Categories: AIS, Donation Appeal

As most lake users are aware, 2020 was a rough year for management of aquatic invasive species (weeds) on Kinderhook Lake. Dense beds of Eurasian Watermilfoil prevented boating and other recreational activities from taking place in large areas of the lake. We were not alone, as similar instances of expansive weed growth in 2020 were reported in many other lakes throughout the region.

Back in 2016, close to 75-acres of aquatic invasive species, primarily Eurasian Watermilfoil, were mapped in the lake. That process led to the purchase of the Eco-Harvester in 2017, which has been efficiently removing milfoil each summer in the main boating channels as allowed by our DEC permit. Since then, the invasive weed beds have expanded, almost doubling in size and density by 2020. Contributing factors to the unprecedented increase in weed growth include (1) recent warmer winters not allowing sediment to freeze deep enough to kill or stun weeds in areas exposed by the annual drawdown; (2) unusually good water clarity consistently 6- to 7-feet deep for the last few years, allowing the sun to reach deeper and help spur weed growth; (3) the natural cycle of aquatic plant decay contributing to rich nutrients helping to fuel weed growth; (4) constant fragmentation of weeds from boat propellers traveling through the milfoil beds (milfoil easily propagates by fragmentation); and (5) natural reseeding and root expansion from large milfoil beds left unharvested due to limitations of our DEC harvesting permit.

While the Eco-Harvester removed a record 118 harvester-loads of invasive weeds this past summer (volume equivalent to ~413 cubic yards or ~34 dump truck loads), it could not keep up with the thick and speedy regrowth of milfoil. Evaluation throughout the summer and fall led the KLC Weed Committee to determine that it was time to expand our weed management program to include new options to combat aquatic invasive species in addition to using our Eco-Harvester.

After extensive research, the Weed Committee identified a relatively new aquatic herbicide called ProcellaCor. It has been used in many states for several years with remarkable results but was only approved for use in New York State waterbodies in 2019. Weed Committee members visited two local lakes in Fall 2020 to observe the results of their ProcellaCor treatments. Areas of milfoil treated with ProcellaCor at Crooked Lake in Fall 2019 and Burden Lake in Spring 2020 were completely free of milfoil. Committee members talked with several other lake associations that used ProcellaCor in recent years and the results were equally as impressive—no regrowth of milfoil. Committee members also consulted with the Department of Environmental Conservation (DEC) and several lake management firms licensed to apply ProcellaCor to evaluate the most optimal methods of treatment for Kinderhook Lake.

According to research, ProcellaCor has many important advantages over other widely used herbicides: (1) it is highly effective at extremely low dosages and dissipates quickly after use; (2) it specifically targets Eurasian Watermilfoil and a few other invasive species; (3) it does not harm native vegetation or wildlife; (4) it has minimal water use restrictions (primarily irrigation related); and (5) it reportedly lasts for three years before retreatment may be necessary (other herbicides require annual treatments). ProcellaCor treatments appear to be our best option to provide extended control of milfoil for several years.

Based on recommendations by the Weed Committee, the KLC Board of Directors approved the treatment of all milfoil in the lake with ProcellaCor in 2021 based on available funding. The KLC has since accepted proposals from three lake management firms and selected Burden Aquatics, Inc., a local firm from Averill Park, to prepare and submit DEC permit applications and treat the lake’s milfoil beds with ProcellaCor in June of 2021. The estimated cost to treat up to 160 acres is $70,000. The final cost will be determined by a survey in the spring to verify the exact size of all the milfoil beds.

Once the milfoil is treated with ProcellaCor, other weed species may eventually grow in its place. New growth could be native or invasive. For instance, curly-leaf pondweed already grows within many of the milfoil beds and will not be affected by the ProcellaCor treatments. It is possible that curly-leaf pondweed will thrive once the milfoil is treated. Fortunately, curly-leaf pondweed prefers cooler water and dies back on its own once the lake warms up by early-July and, until then, the Eco-Harvester will keep main boating channels clear as allowed by our DEC harvesting permit.

Recent capital improvements at the dam ($68,000 in 2019-2020) and annual copper sulfate purchases to help control blue-green algae (~$15,000/year) have put a considerable strain on the KLC’s financial reserves. However, this could not have been accomplished without your membership gifts and generous donations.

Your help is now needed to expand our weed management program. The goal is to raise $70,000 to treat up to 160 acres of Eurasian Watermilfoil with ProcellaCor during the summer of 2021. This goal can only be achieved through donations by everyone who loves and uses Kinderhook Lake and wants to see it thrive in the future.

To reach this goal, help save our lake from being overtaken by weeds, and expand our weed management program this coming spring, your support and donations in one of the following seven categories is requested:

Silver $50 – $199 Eagle $750 – $999
Patron $200 – $499 Golden Eagle $1,000 – $1,499
Golden Patron $500 – $749 Diamond $1,500 – $2,499
  Platinum Leader Over $2,500  

Donations can easily be made securely online here on our website or by sending a check to the KLC at PO Box 53, Niverville, NY 12130. Please see this pledge form for other donation options. 

Think about it this way, ProcellaCor treatments are reported to last at least three years. If you donate $750, your one-time Eagle donation would be equivalent to $250/year. Certainly, you would agree that it is worth $250/year to save our lake from the destruction that will be caused by the continued expansion of Eurasian Watermilfoil. And, if you are lucky enough to own property on the lake, you would also agree that it’s worth $250/year to assure your property values continue to rise.

Thank you for your continued support and help to preserve Kinderhook Lake! Together, we can address this issue. 

DONATE to Help Expand the KLC Weed Management Program