Get to Know the Waltham Land Trust

June 28, 2025

On May 7, Waltham Land Trust Executive Director Sonja Wadman was the featured guest in the League of Women Voters’ Know Your City series. In this engaging conversation, Sonja dives into the heart of the Land Trust’s mission, ongoing projects, and its growing impact on the Waltham community.

🎥 Watch the full interview on YouTube

🌿 What Is the Waltham Land Trust?

Founded in 1999, the Waltham Land Trust (WLT) is an environmental nonprofit dedicated to conserving open spaces, restoring ecosystems, and connecting the community to nature. The idea was born out of frustration that the city was neglecting opportunities to preserve green space. Citizens joined forces to create a city-wide organization—and the WLT was born.

Since then, WLT has:

  • Trained over 300 trail stewards
  • Supported native habitat restoration
  • Advocated for land conservation protections
  • Launched community programs like Save Waltham Wildlife
  • Hosted signature events like the Green Space Blues Jam and 5K Trail Run/Walk

🧤 Powered by Volunteers

WLT thrives because of its passionate volunteers—especially the Trail Stewards who help maintain local trails, remove invasive species, and plant native vegetation. There’s also a core group helping with outreach, mailings, and events. WLT volunteers are truly the lifeblood of the organization.

💡 Education & Advocacy

From informative e-newsletters to hands-on events, WLT keeps the public engaged and informed. The team also advocates for conservation restrictions on city-owned land, ensuring green spaces are preserved for future generations.

WLT has also been instrumental in raising awareness about the dangers of second-generation anticoagulant rodenticides (SGARs), which pose serious threats to local wildlife and pets. Through the Save Waltham Wildlife campaign, they are working with the city and institutions like Brandeis to promote safer alternatives.

🗺 Trails and Access

Waltham is rich in trails, but many residents don’t know where to go or how to access them. WLT offers printable maps and guides on their website for dozens of open spaces. While many trails are wooded and not ADA-accessible, WLT is working to identify and highlight more accessible options.

Some trail hubs include:

  • Prospect Hill Park
  • Mass Central Rail Trail
  • Charles River Pathway
  • Beaver Brook Reservation

🛠 Big Projects Underway

Sonja shared updates on several exciting projects:

  • Connecting the Western Greenway to the Mass Central Rail Trail, including a proposed bridge over a waterway near the Lyman Estate.
  • Lakeview Preserve—WLT’s first owned land on the shores of Hardy Pond, where green infrastructure will reduce runoff and improve water quality.

🎶 A Night to Remember: Green Space Blues Jam

Held at the historic Stonehurst Estate, the Blues Jam is one of WLT’s biggest fundraisers. Attendees enjoy live music, local drinks, and a silent auction—all supporting land conservation. Discounts are available for members and attendees under 40.

💚 Become a Member or Supporter

WLT is funded through memberships, donations, grants, and event sponsorships. Annual membership starts at just $25, with a “living lightly” option at $15 for seniors, students, and others. Members receive newsletters, discounts to events, and the satisfaction of supporting Waltham’s green future.


Want to get involved?

Recent Posts

By N/A N/A February 24, 2026
Help raise money for saving land, building trails, and outfitting stewards while enjoying food and drinks from The Chateau!
By N/A N/A February 20, 2026
Sign up now for the 27th anniversary of this special event and help remove litter or invasive plants from along the banks of the Charles River!
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If you weren't able to attend this event you can check out this slideshow to learn more about Making Pollinator Gardens Easy !
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By N/A N/A February 4, 2026
EVENT POSTPONED TO 2/28/2026 (same time: 10am-12pm) Join us for walk along the Charles River trail in search of dazzling waterfowl visiting from northern climes, as well as our resident birds. Possible sightings include Bufflehead, Ring-necked, and Golden eye ducks, Hooded and Common mergansers, Great Blue herons, Red-tailed hawks, and Bald eagles! Bring cameras and binoculars. Registration is required and space is limited. Event is now FULL .
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On January 29th, about 45 people tuned into a WLT Zoom program entitled "Waltham's Wonderful Birds" with local naturalist, Michele Grzenda. Watch the YouTube video and look at Michele's PowerPoint presentation !
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A total of 54 hardy environmentalists and two dogs braved the cold winds and icy conditions to carefully hike in Prospect Hill Park to the vista at Little Prospect. 22 left from Craft Food Hall for a longer, more gradual walk through the woods while 32 departed from the South Gate for a shorter but steeper trek. At the top we enjoyed cookies and stunning views of Waltham below and the Boston skyline in the distance. Be sure to join us next year, hopefully in better conditions!
December 31, 2025
Support our work preserving and restoring land for the enjoyment of humans and wildlife. Your donation will also help us expand our trail network in 2026!
December 13, 2025
A solid group of eight folks and one dog trekked around Beaver Brook North Reservation with WLT Board Director Debbie von Rechenberg and her husband, Moritz. Stops were made at the Met Fern Cemetery and elsewhere. Several bird species were identified. It's a very pretty space to explore!
December 10, 2025
Thank Bistro 781 supporting local causes like the Waltham Land Trust by eating dinner there or ordering take out. Let your server or phone representative know that you are participating in the fundraiser and to “flag your check” so that WLT gets 10% of the food sale.