Great East Lake Dam 241.14 in Wakefield

  • This dam is constructed across the dredged outlet channel of Great East Lake in the Salmon Falls River WatelShed 5.3 miles upstream of Milton Mills
  • Great East Lake is the source of the Salmon Falls River which forms the lower boundary between New Hampshire and Maine
  • The dam is 68 ft long, 15 feet high oonaele structure
  • There are two 20.50 ft wide spillways with 2 feet of freeboard to the top of the dam
  • There is one 6’w x 7’h sluice gate with sloplogs upstream of the gate
  • The drainage area is 16 square miles
  • The lakes surface areas is 1,800 acres
  • The length of the inpoundment is approximately 3.8 miles
  • The downstream channel is a stone lined channel 1,800 feet long with a 13 foot bottom width and 10 feel high banks which was purportedly built with civil war labor
  • Takes approximately 6.10 inches of runoff to fill the 3 foot drawdown
  • One inch of runoff raises the lake by approxmatefy 5.4 inches
  • Snow samples are taken throughout the winter to help determine the estimate rate of refill
  • If the dam were to fail the lake would drop by approximately 20 vertical feet

For more info, download the PDF

About the Watershed Survey

 We are pleased to announce that the Great East Lake 2021 Watershed Report is finished and
available as a PDF link below. Many thanks to Jon Balanoff, the AWWA Executive Director, for
his perseverance in seeing the project through to this point.
We all know that our lake is very clear and clean, but the challenge before us is to keep it that
way for future generations. The survey identified many sites throughout the watershed that
threaten its present condition. Here is a quick summary of the findings:

           -25 sites were identified as having a high impact on water quality
           -97 sites were identified with medium impact
           -101 sites were identified with low impact

Of these 200+ sites, about half of them require no-cost or low-cost remediation. The other half
are more involved, more technically challenging, and will have a greater expense associated with
them. Please keep in mind that AWWA’s Youth Conservation Corps (YCC) is available to assist
with remediation projects and property owners need only pay the cost for materials, not labor.

Letters and emails have been sent to all participating members informing them if erosion issues
were found on their property or not. If issues were found, members were provided with details
of the findings and suggested remediation methods.

If you do not receive a letter or email and would like to inquire about findings on your property
you can send your request to either the GELIA Watershed Committee email or the AWWA email
address listed below to request that information. Please provide your name, the property
owner’s name and the property address in your request.

We urge all property owners to read the report as it’s filled with useful information, helpful
remediation options and best practices for all kinds of issues. We also want to stress the
importance of addressing issues promptly should any be identified on your property.
Thank you again to all those who assisted with this survey and thanks to everyone for helping to
keep our lake as clean, clear and beautiful as we possibly can.