Lake Winnipesaukee Association

The Lake Winnipesaukee Association (LWA) is a non-profit organization dedicated to protecting the Big Lake’s water quality and natural resources through monitoring, education, stewardship, and science guided approaches for lake management.

State of Milfoil – 50 Years Later!

State of MilfoilLake Winnipesaukee has the dubious distinction of being the lake in NH where milfoil was first discovered in 1965.  50 years later, the plant can be found in most areas of the lake. Communities have invested tremendous time and money in the battle to control this invasive plant.

Are we making progress? On August 6th, join the Lake Winnipesaukee Association in a public forum on the ‘State of Milfoil in Winnipesaukee – 50 Years Later!’  What is being done, lessons learned, the economic impact of invasive plants, and what new threats we should be on the watch for, will be topics covered during the forum.

Milfoil Committees from around the lake will present information on their ongoing efforts to control the spread of milfoil as well as watching out for new invasives.  John Halstead, UNH Professor of Environmental and Resource Economics, will provide information regarding the economic impacts due to invasive species, and Amy Smagula, NHDES Exotic Species Program Coordinator, and John Magee, NH Fish & Game, will discuss current invasive aquatic plants and animals in our rivers, lakes and ponds, and new threats to be on the watch for.

The forum is free and open to the public.  Light refreshments will be served.  A $5 donation will gladly be accepted at the door to help cover costs associated with the program.  Please register here.

For more information contact Pat Tarpey, Lake Winnipesaukee Association at 581-6632.

Book your cruise on the Floating Classroom today!

The Floating Classroom is a fun and informative hands-on program designed to teach both young and old about lake ecology and the issues threatening Lake Winnipesaukee. Join us on an adventure into the past as we learn fun and interesting facts about the history, geology, and ecology of the lake. The tour features a 2 hr. boat excursion on a pontoon boat, where participants get an opportunity to be the scientist’, measuring water clarity, temperature, and viewing zooplankton collected with a plankton tow.LWA_FC_front

Tours depart from the Weirs public docks on Thursdays at 10am and 1pm. The cost is $20 per adult and $15 per child under 16.  Members of the Lake Winnipesaukee Association receive a 10% discount.  Cruises should be booked two days in advance and registrations can be made on line at:  Floating Classroom Registration.


Winnipesaukee Ice Out ‘P check’ Results

Winni_IceOut_ResultsThank you  to all of the volunteers, NHDES staff, UNH, communities and businesses that made the second Ice Out ‘P check’ a success!

A flotilla of boats went out on Lake Winnipesaukee on Monday, May 4, 2015 in a massive coordination effort conducted by the Lake Winnipesaukee Association to obtain lake samples after ice out.  Ice out on Winnipesaukee was declared on April 24th, leaving a small window of opportunity to collect samples before the lake begins to stratify.  Read the article in the Citizen to learn more.

Steve Landry, NHDES, and Heidi Baker, volunteer, collect water samples in Moultonborough Bay for lab analysis of phosphorus concentrations.

“We could not make this event happen without the tremendous cooperation and support from numerous individuals, state agencies, local marinas, UNH, and the town Conservation Commissions!”  stated Pat Tarpey, Executive Director, LWA.


Looking for a special gift for someone? 

Check out the custom maps and charts being offered through the Map Guy.  This is a great  opportunity to have an unique map or chart created to celebrate your home or business, reflect your lifestyle, interests, favorite place, or special event while also benefiting the lake you love!   The artist is generously contributing 30-50% of the proceeds to LWA in support of our work to protect Lake Winnipesaukee!

Water Quality Data Available on line!

You can now access water quality data for Lake Winnipesaukee online! Check it out on the Winnipesaukee Gateway website: Winnipesaukee Gateway Monitoring Sites Map

It’s Winni Cool!

LWA’s Strategic Plan

The LWA Board of Directors has recently completed the development of the most ambitious Strategic Plan in its history.

Highlights of the plan include:

  • Improve our technical and organizational capacities to provide access to information on water quality issues
  • Inform and engage the public through social media, the ‘Floating Classroom’, and community presentations
  • Improve our ability to provide high quality programs, services, and activities to our members and the public through expansion and enhancement of our partnerships

Click Here to download a PDF version of the plan.


The Lake Winnipesaukee Association is a 501(c)(3) nonprofit organization working to protect the water quality and natural resources of Lake Winnipesaukee
and its watershed now and for future generations.