Winchendon Springs Lake Association: Lake Monomonac

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Winchendon Springs Lake Association: Lake Monomonac

The Winchendon Springs Lake Association was founded to insure the quality of our lake community. Construction was completed in 1923.

Lake Monomonac is formed by Lake Monomonac Dam on the Lake Monomonac River in Worcester County, Massachusetts and is used for recreation purposes. It is property of Town of Winchendon. Lake Monomonac is a man-made lake between New Hampshire Massachusetts. It was created from a small pond in New Hampshire by the construction of dams on the North Branch of the Millers River, a tributary of the Conne

cticut River. Lake Monomonac is 711 acres in size with 425 acres in New Hampshire and the remaining 286 acres in Massachusetts. A unique feature of the lake is the imposing bow of the ship, the "Santa Maria" facing northward up the main body of the lake. Built in 1942 of rock and concrete, it is a bit of whimsy by a priest, Father Wilfred A. Tisdale, as a vacation retreat and to display and enjoy his collection of rare works of art of genuine museum quality. There are 342 property owners and approximately 200 structures on the Massachusetts side of the lake. Approximately 1/3 of those structures are year round homes. 2 dams at the southeast end of the lake - one large earthen dam, and a smaller poured cement dam down stream about 200 feet. The large earthen dam has a siphon for level control. In addition, there is a large spillway on the northwest end of the lake that constructed with removable splashboards. The town of Winchendon owns the dams and spillway. The control at the siphon lowers the lake level 6-8 feet every fall so that spring run-off cannot endanger breaching the dams. Fishing, boating, swimming, sailing all are enjoyed on Lake Monomonac. Hurons, and various duck life abound. There are no 'public beaches' at present. There is a marina on the northeast end of the lake in New Hampshire that has a public ramp for boat access by non residents. Boat sales, gas and service are available at present. There is also a small town-owned lot on the south west end of the lake nearer the town of Winchendon, undeveloped at present that could give access to the shallower end of the lake downstream from the dams. Water source is from nearly 90 various streams, springs. Since Lake Monomonac is in both New Hampshire and Massachusetts, The Winchendon Springs Lake Association works closely with The Rindge lake association, Monomonac Lake Property Owners' Association (MLPOA) on regular water testing.

04/03/2026

Reminder of these important dates. New Massachusetts Boating law, as of April 1st, anyone born after 1/1/89 must obtain a Boater Safety Certificate, and must have it onboard with them while operating any boat.

12/02/2025

Great tips on snow removal on the Lake!

Best Practices: Plan Snow Storage Wisely

TIP: Plan ahead for snow storage by identifying flat, permeable areas away from steep slopes and waterways where plowed snow can be piled.

WHY: Snow stored near lakes or on steep slopes can lead to runoff carrying pollutants like salt, sand, and debris into the water. Storing snow on flat, permeable ground allows it to slowly melt and seep into the soil, reducing harmful runoff into lakes.

https://monomonac.org

11/25/2025

MLPOA and WSLA mourn the sudden loss of Lourdes Gray, who recently passed away in an auto accident in Rindge. Lourdes was a kind and devoted steward of Lake Monomonac, who was deeply committed to its health and long-term well-being.

She created & produced the Lake History video featured on the MLPOA website and was a driving force behind our lake-monitoring efforts. For many years Lourdes also played a key role in the annual spring invasive-weed survey, helping identify areas of invasive milfoil growth and often offering her own boat so the biologist and committee members could get out on the water. This work was essential to ensuring accurate, effective treatment and maintaining the overall health of the lake.

She also generously mentored our current VLAP volunteers, Chris Peahl and Mike Romanow, sharing her knowledge and passion so that this important work would continue.

Lourdes’s love for nature, our community & people was truly inspiring. She will be deeply missed by our lake community.

10/31/2025

Best Practices: Inspect Erosion Control Measures

Best Practices: Inspect Erosion Control Measures
TIP: Before winter sets in, check and repair erosion control features like mulch, gravel, or silt fences on your property.

WHY: Fall rains and snowmelt can cause erosion, leading to sediment runoff into lakes. Proper erosion control protects water quality.

https://monomonac.org

10/29/2025

If you’re missing part of your floating dock, it is down near the main dam.

10/18/2025

For those who can not attend the forum Monday here is a zoom link!

Zoom is the leader in modern enterprise cloud communications.

10/17/2025

Come celebrate what we accomplished!

The overwhelming grassroots support from us - WSLA, MLPOA, the people of Winchendon and Ashburnham - all made this possible. We rallied together in 2023 to call for the land to be protected instead of turned into a massive solar development. Big thanks go to Mt Grace and MA Audubon for stepping up to preserve the land until it could be turned over to the Commonwealth.

🌲 Join Us for a Winchendon Forest Celebration! ✨

Mount Grace will join Winchendon and Ashburnham friends and neighbors this Tuesday (10/21) to celebrate the protection of more than 1,300 acres of forested hills and wildlife habitat across both towns! 💚

This incredible victory was made possible by overwhelming community support — residents rallied together in 2023 to protect this special landscape from a massive solar development.

📍 Location: North Ashburnham Road, Winchendon, MA
🚗 Parking: Limited on-site. Please park at 727 Spring St., Winchendon, MA 01475 — shuttles will run starting at 10:30 AM.

10/08/2025

Join us on Monday, October 20, for an important community forum about protecting the future of Lake Monomonac!

Protecting the Future of Lake Monomonac

Join us for an important Public Forum on Monday, October 20, from 6–8 PM at the Rindge Recreation Center. Together, we’ll discuss how to protect and improve the water quality of Lake Monomonac for generations to come.

Representatives from FB Environmental Associates (FBE) Associates will present our developing Watershed Management Plan (WMP), explain what’s impacting the lake, how the WMP will guide real, community-driven solutions.

Your input matters—come share your ideas, ask questions, and be part of shaping a cleaner, healthier future for Lake Monomonac!

Date: Monday, October 20
Time: 6:00–8:00 PM
Location: Rindge Recreation Center
Hosted by MLPOA in partnership with WSLA and FBE Environmental

09/10/2025

MLPOA/WSLA Shoreline Survey on Mon 9/15

This survey will document shoreline conditions and highlight properties that show signs of erosion. Each shoreline parcel will be scored based on vegetated buffer, bare soil, extent of erosion, distance of structures to the lake, and slope. These scores will be combined into an overall shoreline disturbance score, with higher scores indicating poorer conditions.

The shoreline survey is designed to provide a rapid assessment of overall shoreline health and to help prioritize properties for technical assistance or outreach. The results will be summarized in a Watershed Assessment technical memorandum titled Shoreline Survey Results. Individual property photos will not be published in the memorandum but can be made available upon request to MLPOA. No data regarding individual parcels will be shared with outside authorities.
The survey will take place on Monday, September 15, 2025. During this time, you may notice people in boats taking
photographs of the shoreline. This work is part of the survey process and is an important step toward protecting the longterm health of Monomonac Lake.
Your support is greatly appreciated as we work together to protect our beautiful lake.

Send a message to learn more

08/10/2025

Still time to register to play.
Support WSLA & Lake Monomonac at our 7th Annual Golf Tournament. Registration is open.
Not a golfer considering supporting by sponsoring a hole! https://www.wsla.us/golf-tournament

08/06/2025

W**D TREATMENT: The green area's on this map is where invasive milfoil was treated 7/16 on the MA side of the lake. The best way to prevent invasive's from entering and spreading in our lake is to make sure anyone who is bringing any type of boat, paddle board etc. into our lake adheres to the Clean, Drain Dry Law! https://www.fws.gov/story/clean-drain-dry

07/14/2025

Support WSLA & Lake Monomonac. Our Annual Golf Tournament Registration is now open. Not a golfer considering supporting by sponsoring a hole! https://www.wsla.us/golf-tournament

Send a message to learn more

Address

Winchendon, MA
01475

Website

http://www.wsla.us/

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