Calendar of Walks and Other Programs

Big turnout for March walk in 2009

Spring 2017

Spring Monthly Walks at Great Meadows NWR/Concord

This spring marks ten years of my monthly, evening, and full moon walk offerings at Great Meadows.  Following my March walk, I hope to offer three last monthly walks, April-June, before my family relocates to Vermont.  Due to my full and unpredictable spring schedule these walks will be announced via my e-list, this webpage, and the refuge chalkboard, as time and weather permit.  Please stay tuned!  If you wish to be added to my e-list, please send a request to

Impromptu Evening Walk
Monday, April 17, 6:30 pm
Some shallow water still on parts of the trail...wear boots or wading shoes, if you have them.

Led by local naturalist and photographer, Cherrie Corey
Donations will be gratefully accepted.

Open to all ages.  No pre-registration required.
Co-sponsored with Friends of the Assabet River NWR

Meet at the information kiosk at Great Meadows NWR in Concord.  Take Rte. 62 to Monsen Rd.  Follow Monsen Rd. and turn left into refuge driveway when road turns sharply right.  Follow refuge road to the parking lot at the end.  GPS: 177 Monsen Rd., Concord, MA abutter to refuge driveway.

For questions or to be added to the emailing list for notice of these and impromptu evening walaks, contact or 978-760-1933.

UPDATE - Monday, April 17:  Still a bit of water on parts of the cross-dike and river edge trails.  Boots are recommended. 

Gowing's Swamp/Thoreau's Bog Walks -
Commemorating Thoreau's Bi-Centennial

In honor of the Thoreau's Bicentennial, I'll be leading three walks around Thoreau's favorite Concord wetland - Gowing's Swamp.  No doubt Thoreau had Gowing's and nearby Beck Stow's swamps in mind when he wrote in his essay, Walking, "Hope and the future for me are not in lawns and cultivated fields, not in towns and cities, but in the impervious and quaking swamps." Wading through Gowing's Swamp, below the eastern flank of Revolutionary Ridge, was both a sacred and scientific pilgrimage for Thoreau and standing on its shoreline inspired visions of Labrador and Greenland.

The Gowing's Swamp basin has changed dramatically since Thoreau's time, with the reforestation of its shoreline, the filling in of its sphagnum mat, suburban encroachment around its perimeter, the battering of its southern shoreline by last summer's tornado, and the ambitious removal of thickets of invasive plants reopening its vistas along the eastern shoreline. Gowing's Swamp survives as the longest studied, intact bog not only in Concord, but throughout the northeast, thanks to the inspiration of Thoreau's detailed observations and documentation.

Cherrie Corey, Concord naturalist and photographer, has been a watchful neighbor and steward to Gowing's Swamp for some forty years, researching and compiling a comprehensive history of the bog, its flora, and relevant studies and resources under contract with Sudbury Valley Trustees.  SVT, Concord Land Conservation Trust, and the Meriam Close Conservation Trust own and collectively steward the twenty-six acres that include the bog and its surrounding forested shorelines.

Three sponsored walks:

Saturday, June 3, 2-4 pm
Sponsored by Sudbury Valley Trustees.  Registration required,

Friday, July 14, 6:45 -8:15 am
Sponsored by the Thoreau Bicentennial Gathering/Thoreau Society, 
full conference or event registration required,

Thoreau Society/Thoreau Bicentennial Gathering
July 11-16, 2017
A five day celebration of the life, writings, and legacy of Henry David Thoreau on this 200th anniversary of his birth.   In lieu of a formal presentation this year, I will be leading early morning walks to Great Meadows and Gowing's Swamp, two of Concord's landscapes I know by heart.  For conference and event information and registration, go to:

Monthly Concord Conservation Coffees
First Tuesday @ month, 7:30 am from September - May
141 Keyes Rd., Concord, 1st Fl Meeting Rm.

Flora and fauna at Sleepy Hollow
Informal gathering and information exchange between town natural resources and other interested staff and board members and local environmental leaders, organizations, naturalists, and interested citizens.  Meeting usually lasts about an hour.  Bring your coffee mug, coffee and coffee cake available with donation.


Check back for additional programs as they are added...

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