Watershed Protection


Although adding land parcels to the Preserve is still our highest priority, we cannot insure the viability of the Gorge without also protecting the watershed.  The Mianus Watershed is located in the towns of Bedford, North Castle, Pound Ridge in NY and Stamford and Greenwich, CT.  Mianus River Gorge (MRG) staff work with Town Boards, Planning Boards and Wetland Commissions in these towns to monitor development and insure it is conducted in such a way as to minimize storm water runoff, wetland damage and other negative impacts on the Mianus River and its water quality and quantity.


MRG worked with town governments to have this Vortec unit installed at Miller’s Mill and Mianus River Rd to control silt runoff.

In the last 40 years, MRG has submitted expert testimony on over 250 development projects totaling hundreds of acres in the Mianus Watershed, working with town governments to limit the impact of developments on the health of the Mianus River and its watershed. MRG has worked with town and County governments to strengthen aquifer protection ordinances and keep the water quality of the Mianus River as AA Special (a drinking water supply).

Water quality monitoring

MRG scientist monitoring water quality of the Mianus River

To assess the impact of development, Gorge scientists and staff regularly monitor the water quality of the Mianus River at the Preserve. Presently, graduate student Sheila Saia is conducting scientific research throughout the watershed to gain a better understanding of the linkages between soil microbes, hydrology and the transport of phosphorous over land and into lakes and streams which could lead to improved water quality in watershed areas.

Healthy Wetlands

A healthy wetland allows water to spread out and be slowly absorbed into the ground, recharging the aquifer.

The Mianus River Gorge assisted in putting together a management plan for the Mianus Watershed. The Southwest Regional Planning Agency (SWRPA) coordinated the development of the watershed plan with input from stakeholders. The final draft of the plan was compiled by AKRF, a local consulting firm, in 2012. For copies of the watershed management plan and more information, visit SWRPA’s webpage.

The mission of Mianus River Gorge, an independent, not-for-profit organization, is to preserve, protect and promote appreciation of the natural heritage of the Mianus River watershed through land acquisition and conservation, scientific research and public education throughout the region.
Mianus River Gorge, 167 Mianus River Road, Bedford, New York 10506     914-234-3455     info@mianus.org

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