The Friends of the Great Swamp
of southeastern New York State

The Great Swamp Watershed

Map Courtesy The Nature Conservancy (21.5 MB PDF)

FrOGS News

Paddle for The Great Swamp

On Saturday, May 17, Friends of The Great Swamp (FrOGS) will sponsor the first annual Paddle for The Great Swamp. The 7-mile half-day paddle down the East Branch of the Croton River will start at the Patterson Environmental Park and end at Green Chimneys in Brewster, where participants will be met with food, music and festivities. For more information:


Haviland Hollow Brook in NY FOREVER Protected!

This new acquisition which was the result of the work of the NYS Department of Environmental Conservation, the Trust for Public Land and Friends of the Great Swamp totaled 355 acres and is known as the South Hollow parcel. The parcel is located on the south side of Haviland Hollow road and surrounds and protects Haviland Hollow Brook, the only brook trout stream in the Great Swamp.

Recreation Requests

FrOGS receives many requests for information about using the Swamp for recreational activities. Please review our Recreation page for details.

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The Great Swamp --nestled in the Harlem Valley and covering over 6,000 acres in New York's eastern Putnam and Dutchess Counties--is one of the largest freshwater wetlands in the state. It has been designated by the USDA Forest Service as a Highlands Conservation Focal Area and was cited by the state Department of Environmental Conservation in a 2009 report for its unique habitat, diverse wildlife, scenic value, and its critical function as an aquifer recharge area which protects and purifies the water supply for millions of New York residents as well as provides outstanding educational and recreational opportunities.

Friends of the Great Swamp ( FrOGS ) is an all-volunteer not-for-profit group of friends and neighbors dedicated to preserving and protecting this unique and valuable resource through research, education, and community action.

Friends of the Great Swamp (FrOGS)
P.O. Box 373
Pawling, NY 12564
(845) 855-1917