Welcome to the Hamlin Lake Preservation Society

The Hamlin Lake Preservation Society is a non-profit, educational organization that represents riparian owners and interested friends of Hamlin Lake. Our organization does this in a variety of ways from monitoring water quality and weed distribution, producing a newsletter, to sponsoring activities on the lake such as fireworks, and sailboat races.  Please talk a moment to look around our website to learn more about our various activities and how you can become a supporter of the Hamlin Lake Preservation Society.

New Bathymetry Maps of Hamlin Lake

The data used to create these maps was collected during July and August of 2018 and 2019. A bit of data was also collected in September 2019.  Equipment used: Lowrance Fish Finder, model HDS-7T, Lowrance Point-1 Baja GPS Antenna, Depth transducer; P66-BL, 50-200 Depth-Temperature-Speed.

Learn more by viewing our Bathymetry Data page.

The Quality Of Our Water Is Vital For Everyone

Latest Posts

Mountain Pine Beetle

MDARD implements new quarantine for mountain pine beetle Department working to protect Michigan’s pine trees from devastating pest Michigan Department of Agriculture and Rural Development (MDARD) Director Gary McDowell is taking steps to protect the state’s pine trees...

Current / Future Projects:

Shoreline Restoration

In 2021 with the Pandemic behind us HLPS intends to again work with LSP team on shoreline restoration.  Two sites have been identified and locations and plans will be shared in spring of 2021.

You can learn more by visiting the Natural Shoreline Restoration Project page.

Watershed Plan

Citizen water monitoring program extended with five-year contract.


This is great news!! In 2020 HLPS continued the volunteer water monitoring program and supported its own lab analysis so as not to lose continuity of data.  We are happy to see that the program will continue to be funded for the next 5 years.

Big Sable Activities

An EnviroDIY Mayfly Sensor Station was installed in the Big Sable River October 7, a cooperative project between Hamlin Lake Preservation Society and Michigan Trout Unlimited.

The solar-powered station will record and report real-time data on depth to determine water flow, temperature, and conductivity to a web site that will be available through https://monitormywatershed.org/sites/Big Sable River Hwy 31/ every 15 minutes. Data also includes the temperature within the monitor box.

Jacob Lemon, MTU Eastern Angler Science Coordinator, installed the sensor on county property east of the Us 31 Bridge, with permission from the county, and assistance from HLPS president Wayne Andersen.

HLPS paid for the station, one of 19 now in Michigan.

Lemon instructed Wayne on how to maintain the station and conduct quality control checks. Having good data will assist in monitoring water quality on the stream which flows into Hamlin Lake and ultimately Lake Michigan.

Water temperature and stream flow data can be of interest to anglers and recreational users of rivers as well helping develop a baseline of environmental data on the river.

Conductivity measures the water’s ability to conduct electricity. Changes in conductivity can indicate something entering the stream such storm runoff sediment or even road salt.

Water depth is a surrogate for flow. The deeper the water, the higher the discharge. The intention is to over time develop a ‘rating curve’ to translate depth to discharge in CFS (cubic feet per second) to be able to report flow in CFS on the site.

By watching the data and comparing it to visible stream conditions, over time one will get a good sense of what the numbers represent, Lemon said.

AND, for anyone who has been watching, in about the last two weeks the river has

  • Risen 7.2″
  • Temperature has dropped 9.4 degrees

The Road Commission at the urging of HLPS will try to work on the Dennis Road Bridge to help reduce the North Dennis Road erosion problem.

Re-Forestation Programs

We anticipate the Trees for Trout and the Wild Roots programs both to be available next year.  We will post information when it is available.

HLPS Scholarship

The HLPS scholarship program is coordinated through the Community Foundation for Mason County.  In 2020, 106 students from Mason County schools made application for a variety of scholarships offered through the Foundation.  The successful applicant for the HLPS Scholarship was Lauren Larr.  Lauren is a Ludington High graduate and is attending Grand Valley State University majoring in Environmental Engineering. 

In Lauren’s words, “Thank you for your generous scholarship.  You are helping me now so that I can help generations to come in the future.  Growing up so close to Hamlin Lake and Lake Michigan meant I got to enjoy their beauty and develop a deep respect for the land.  As a hopeful environmentalist, I am concerned about maintaining coastlines, preventing further damage to the environment, and managing resources so they are not overused or abused.  I wish to make Michigan a sustainable and healthy environment for years to come”.

Those interested in applying for future scholarships please visit the Community Foundation’s application link https://mason-foundation.org/scholarships/ .  Scholarship applications need to be submitted online beginning October 1, 2020 and are due by February 1, 2021.


NCCISMA is a group of organizations and individuals united to address invasive species within Lake, Mason, Mecosta, Missaukee, and Osceola county. The organization’s website (northcountryinvasives.org) has recently been updated and is full of resources for people who want to manage invasive species. The website is designed to help visitors learn to identify, report, and treat invasive species. Whether you are a property owner looking to get rid of invasive plants, an educator looking for classroom resources, or a concerned citizen wanting to learn more about invasive species, NCCISMA’s website can provide you with important information and useful links.

Hamlin Lake Preservation Society
PO Box 178
Ludington, MI 49431