Welcome!

Welcome to the website of the Northwood Lake Watershed Association. Through our website, we seek to keep members, non-members and all those who care about Northwood Lake and its watershed informed and involved in maintaining and enhancing the health and beauty of this precious waterbody.


NOTICE: Portions of Northwood Lake to be Chemically Treated on Monday June 13th, 2016

On Monday June 13th, several areas of Northwood Lake were treated with the herbicide Navigate (2,4-D) in order to control variable milfoil. See the map below for those areas affected.

Treatement Area

Yellow signs will be posted around the lake and abutting homeowners notified by mail. The following temporary restrictions will be in effect for the indicated areas only:

Do not use lake water for drinking, irrigation or for mixing sprays for agricultural or ornamental plants until further notice. Some irrigation restrictions may be relaxed, at the discretion of the applicator. These restrictions apply to all intakes within 1,200 feet of a treatment area.

Once post-treatment water testing is completed and found satisfactory, these restrictions will be lifted. If you have any questions concerning the treatment or restrictions, please click here to email us.


Save the Date: NLWA Annual Meeting is July 16, 2016

The Northwood Lake Watershed Association (NLWA) will be holding our annual meeting at the Northwood Town Hall on Saturday July 16th starting at 9am. Guest speaker to be announced. We will be electing board members and officers and discussing strategic planning, fundraising and budgeting. Please come join us and share your ideas and input.


Facts You Should Know About the NLWA:

The Northwood Lake Watershed Association (NLWA) is a 501(c)(3) non-profit New Hampshire corporation. Our elected officers, directors and members come from all three towns that have a shoreline on Northwood Lake: Northwood, Deerfield, and Epsom. The purpose of The Northwood Lake Watershed Association is to preserve and protect the quality of Northwood Lake and its surroundings. Variable milfoil first appeared in Northwood Lake in 1990. In 1992, the NLWA was formed to deal with the milfoil problem and we have had considerable success in containing and even reducing the presence of milfoil in affected areas. Our activities include the monitoring, treatment and control of milfoil. Our mission is entirely one of protection and conservation. We have been working closely with the Boards of Selectmen in Northwood, Deerfield and Epsom to secure much-needed, ongoing economic support... an effort that has been largely successful. For the 2016 season, we have secured funding from all three towns: Northwood, Deerfield and Epsom. Even with our DES grant, a significant gap remains. That remainder will have to be made up by private and corporate donations.

NLWA’s efforts are focused on three methods of treatment and containment:

Herbicide Treatment: 2,4-D – trade names Aqua Kleen and Navigate. 2,4-D is generally applied to the aquatic environment after being mixed with clay and formulated into pellets. Once on the waterbody bottom, the herbicide is slowly released over time and is absorbed by the roots and leaves of the plants causing abnormal growth responses. This usually kills the plants within two weeks.

DASH (Diver Assisted Suction Harvesting): is a very productive and effective method of removal. When suction harvesting, a diver physically removes (hand pulls) the targeted plant, being careful to remove the entire root system and minimize fragmentation. They then place the plant into a suction hose that takes the plant to the surface. We are not dredging the lake bottom, but simply hand pulling the target plants and using suction to get them to the surface.


Make Sure You Are In Touch With The NLWA
We are looking forward to making extensive use of our membership email list in order to stay in touch and keep everyone up to date as to what's going on with the NLWA. If you are not receiving email from the association, or have changed your email address, please click here to email us so that we can keep our list as complete and current as possible. We want to keep everyone in the loop!


The NLWA Would Like To Thank Our Corporate Sponsors For Their Support:
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