Annual Lake Monitoring Conference

Save The Date!

2020 LSM Annual Conference will be held on Saturday, July 25th.

Details will be available at a later date, please check back.

LSM’s 2019 Annual Lake Monitoring Conference was held on July 27th at The Great Outdoors on Pleasant Pond in Turner, and explored the impacts of climate change to lakes. Lake scientists, as well as individuals from lake communities who have experienced climate-driven ecological catastrophes in their lakes were present to discuss their experiences.  When all factors are taken into account, climate change is almost certainly the greatest, and most complex known threat to the health of Maine’s lakes! This phenomenon has the potential to amplify the effects of polluted stormwater runoff and watershed erosion, severe, and potentially toxic algal blooms, the threat of invasive aquatic species, habitat impairment, drought, and much more.

2019 Program:

Maine Lake Ice-Out Dates: 1807-2018
Lloyd Irland, PhD; Forester and Economist; The Irland Group

View Presentation Slides

Maine’s exceptional lakes are clear and clean, due in no small part to the fact that historically they have been covered with ice and snow for nearly 6 months of the year. A shortening of the duration of ice cover on lakes as a result of a warming climate will likely have a profound effect on the interacting biogeochemical factors that influence lake ecosystems. Lloyd Irland will discuss his recent research, which suggests that a shortening of the period of ice cover on Maine’s lakes has been taking place since the mid 19th century.

The Influences of Climate Change on Lake Water Quality, Including Recent Case Histories
Linda Bacon, Limnologist and Unit Leader; Maine Department of Environmental Protection, Lakes Program

View Presentation Slides

During the past 10-15 years, a number of Maine lakes have experienced significant, unanticipated changes in water quality. A warming climate appears to have been a common factor in the complex interaction of conditions and circumstances that contributed to these changes. Linda Bacon will discuss the case histories of several lakes that have been pushed “over the edge” in recent years, as well as efforts underway to slow or reverse their decline.

The Effects of a Changing Climate on Invasive Aquatic Species: Threats to Maine’s Lakes
Roberta Hill, Aquatic Ecologist and Invasive Aquatic Species Program Director; Lake Stewards of Maine

View Presentation Slides

One of the major historical factors that has protected Maine’s lakes from aquatic invaders has been our relatively cool climate. Many species of invasive flora and fauna that have successfully infested lakes throughout much of the Country have failed to gain a foothold in Maine, in part due to our long, cold winters, and cool water temperatures. A warming climate could open the door to many such invaders. Roberta Hill will discuss what could take place in such a scenario, and what can be done to address the problem and reduce this threat.

The Imminent Launch of the Long-Awaited App: A Field Guide to Aquatic Phenomena; Demonstration of, and Discussion of the App Development
Spencer Harriman, Logistics & IT Manager, and App Coordinator; Lake Stewards of Maine

View Presentation Slides

Every lake in Maine is a place of wonder and discovery. The LSM Field Guide to Aquatic Phenomena has been developed to not only provide a knowledgeable mobile-device based companion for lake-bound adventurers; but also, to engage lake users in the important work of spotting threats to lakes as early as possible. Version 1.0 of the app focuses on common and/or potentially problematic phenomena that people might encounter when out on their lake. Once launched, the initial catalog of species and images will be updated and enhanced regularly. Best of all, the app has been specifically designed to encourage users to play an active role in the ongoing development of this infinitely expandable resource.

LSM’s Spencer Harriman will share on screen Maine’s newest lake app, discussing LSM’s fruitful collaboration with ASAP (University of Maine student app developers); and demonstrating how easy it is to search a wide array of FAUNA, FLORA and OTHER LAKE PHENOMENA, zeroing in on the phenomena of interest through a series of simple keys. He will also provide a preview of some of the additional features and functions that are already in the pipeline.

A beta version of the new app be previewed at this year’s LSM Lake Monitoring Conference. Those who would like to help test the beta version, may sign up in the exhibit hall.

Other Conference Activities:

– Silent Auction
– Aquatic Plant Identification
– Exhibit Hall

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The conference is FREE for all CERTIFIED Lake Stewards of Maine lake monitors.
$35 for others, $20 for students. Lunch is included.
~ Registration opens at 8am.  Conference begins at 9am.  Lunch at 12:30.
~ Water quality re-certification workshop at 1:30 (pre-registration required; please contact Jonnie at 207-783-7733 or
~ Conference is being held at The Great Outdoors, located at 68 Naiad Lane, Turner, Maine.  Directions below.
~ Per request of venue owner:  NO Pets Allowed!  They kindly ask that you leave your furry friends at home.  Thank you!
~ In an effort to ‘go green‘ this year, we will not be supplying single-use bottles of water.  We will have water available, so please bring your re-usable water bottle.  Drinking cups will be available, if needed.

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Thank you to our generous Conference Sponsors!





To get to the Great Outdoors

From the North & West:

Head South on Route 4

In North Turner, turn left onto route 219

Go two miles, turn right onto route 117

In approx .25 miles turn Right onto Naiad Lane, Great Outdoors sign will be at the end of the road, facility is .3 miles in.

From South (Auburn)

Head North on Route 4

Turn Right onto Upper Street directly after Paris Farmers Union store

Travel 5 miles on Upper Street

Continue on North Parish Road/Route 117, travel 4 miles

Turn Left onto Naiad Lane, Great Outdoors sign will be at the end of the road, facility is .3 miles in.

From East (Augusta)

Head West on Routes 202/100/11

Turn Right onto Routes 133/41 (2.5 miles)

Bear Left and continue on Route 133 (5.8 miles)

Turn Left onto Route 219

Travel 7.4 Miles, Turn left onto Route 117

In approx .25 miles turn Right onto Naiad Lane, Great Outdoors sign will be at the end of the road, facility is .3 miles in.

Our Mission

The Mission of the Lake Stewards of Maine (LSM) is to help protect Maine lakes through widespread citizen participation in the gathering and dissemination of credible scientific information pertaining to lake health. LSM trains, certifies and provides technical support to hundreds of volunteers who monitor a wide range of indicators of water quality, assess watershed health and function, and screen lakes for invasive aquatic plants and animals. In addition to being the primary source of lake data in the State of Maine, LSM volunteers benefit their local lakes by playing key stewardship and leadership roles in their communities.


LSM is a non-profit 501(c)(3) organization committed to the collection of information pertaining to lake water quality. For 40 years, trained volunteers throughout Maine have donated their time so that we may all learn more about one of Maine’s most beautiful and important resources — our lakes.