Lake Demontreville and Olson Assn
…preserve, protect, and improve water and shoreline health
Clean, Drain, Dry Instruction video
MN DNR Boat and Water Safety
Protect our Lakes
The Lake Demontreville and Olson association (LDO) was founded in 1985 with a primary focus of maintaining water levels. In 1987 the Valley Branch Watershed District completed 1007 project managing water levels across the Tri-Lakes area and Washington County.
The LDO is now a IRS approved 501(c)(3) organization focused on managing the Invasive Species in the Lakes and monitoring the water quality.
Our Sponsors and Supporters
City of Lake Elmo
Minnesota Aquatic Invasive Species Research Center
Valley Branch Watershed District
Washington County
MN DNR
