Sudbury-Assabet-Concord River Watershed
Working together to restore the native habitats of the Sudbury-Assabet-Concord River Watershed


The SuAsCo CISMA (Cooperative Invasive Species Management Area) is a partnership of organizations that intend to manage and control invasive species defined by the geography of the Sudbury, Assabet, and Concord (SuAsCo) watershed. Thirty-six towns are part of the SuAsCo Watershed, and we are all connected by the Sudbury, Assabet, and Concord river system. The watershed covers approximately 377 square miles and includes a variety of upland habitats, wetland habitats, historic sites, scenic sites and recreational areas. The towns, state and federal government agencies, and environmental organizations that hold land in the watershed all share an interest in the work of the CISMA.

Cisma Map

What are Invasive Species?

  • Any plant or animal that is not native to an area.
  • Able to reproduce without any natural checks on population growth and can out-compete native organisms.
  • Invasive species begin to fill the ecological roles of native species and in short order can entirely replace native species.

Wild and Scenic

In April 1999 Congress designated 29 miles of the Sudbury, Assabet, and Concord Rivers as Wild and Scenic for their outstanding ecology, history, scenery, recreation values, and place in American literature. The designated reach includes: the 14.9-mile segment of the Sudbury River beginning at the Danforth Street Bridge in Framingham, downstream to the Route 2 bridge in Concord, and the 1.7-mile segment of the Sudbury River from the Route 2 bridge downstream to its confluence with the Assabet River at Egg Rock; the 4.4-mile segment of the Assabet River beginning 1,000 feet downstream from the Damonmill Dam in West Concord, to its confluence with the Sudbury River at Egg Rock in Concord; and the 8-mile segment of the Concord River from Egg Rock at the confluence of the Sudbury and Assabet Rivers downstream to the Route 3 bridge in Billerica.  

Designating a river as “wild and scenic” does not halt use of a river; instead, the goal is to preserve the character of a river. Uses compatible with the management goals of a particular river are allowed; change is expected to happen. However, development must ensure the river’s free flow and protect its “outstandingly remarkable resources.” The intent of Congress was to create a national system of protected rivers that co-existed with use and appropriate development. Each river designation is different, and each management plan is unique. Over 156 rivers in the U.S. have been given the Wild and Scenic designation.

To learn more about Wild and Scenic Rivers Act and the SuAsCo Watershed, please visit The Sudbury, Assabet, and Concord Wild & Scenic River Stewardship Council.



Upcoming Events

Administrative Subcommittee

Tuesday, August 13, 2019
1:00 pm to 2:30 pm

All SuAsCo CISMA members are welcome to attend meetings of the Administrative Subcommittee, which is attended by the officers of the SuAsCo CISMA.  Meeting topics focus on implementing policies, procedures,… Read more

Mile-A-Minute Pull Grey Fox Lane, Westford

Saturday, August 17, 2019
9:00 am to 11:00 am

Grey Fox Lane, Westford, Westford
Come help pull the invasive vine Mile-A-Minute at Grey Fox Lane with the Westford Conservation Trust. The pulls at Grey Fox Lane are every other Saturday from July 6 to… Read more

Water Chestnut Pull- Sudbury River Framingham

Saturday, August 17, 2019
10:00 am to 1:00 pm

151 Central St. Framingham, Framingham
Come help pull water chestnut from the Sudbury River on August 17th 10:00 am- 1:00 pm at 151 Central St. Framingham. Don’t want to get into a canoe? A few land… Read more

Wayland Volunteer Work Day: Invasive Plant Removal

Saturday, August 17, 2019
10:00 am to 11:30 am

The Wayland Conservation Department is looking for volunteers to help remove invasive plants on conservation property. Volunteer work days will take place on the third Saturday of every month May… Read more

Mile-A-Minute Pull- Laughton Farms and Randolph Circle, Westford

Saturday, August 24, 2019
9:00 am to 11:00 am

Come help pull the invasive vine Mile-A-Minute at Laughton Farms and Randolph Circle with the Westford Conservation Trust. The pulls at Laughton Farms and Randolph are every other Saturday from… Read more

Recent News

Training for the raising of Galerucella beetles

January 3, 2013

Sessions on June 28th & 29th, 9 AM – 1 PM Location: 680 Hudson Road Sudbury, MA Description: The SuAsCo CISMA would like 10 organizations within the SuAsCo watershed to… Read more

SuAsCo CISMA and Walden Woods Project present second seminar

January 2, 2013

May 16th at 7 PM. View Jess Toro’s presentation: Taking On Invasives, Battles Won and Lost Read more

2012 SuAsCo CISMA Annual Fall Meeting

November 13, 2012

Fall meeting of the SuAsCo CISMA On November 13th, 2012 at the Garden in the Woods, conservation colleagues from a variety of non-profit, municipal, state, and federal organizations and agencies… Read more

Mass. Fish & Wildlife Recommends Avoiding Invasive Plants in Holiday Decorations

November 3, 2012

During holiday seasons, many people use plant material they have gathered from their yard or neighborhood to decorate their houses or businesses. The Division of Fisheries and Wildlife (DFW) and… Read more

Invasive Plant Management Workshop

September 3, 2012

CISMA partners with the DOT Baystate Roads Program on an Invasive Plant Management Workshop Come to this workshop to learn how to improve your management results and cut costs. You… Read more