Aquatic Plant Management Program
MILFOIL MAPPING AND REMOVAL
Beginning in May of 2004, the residents of Upper Saranac Lake committed to the largest effort to control Eurasian watermilfoil (hereafter called milfoil) using manual removal in the Adirondacks. The Adirondack Watershed Institute (AWI) provides administrative and technical support for the project.
Milfoil is hand harvested by divers who begin working their way around the lake in May/June of each year. In addition to harvesting milfoil, the divers also collect data on the percent cover of aquatic plants, the amount of milfoil removed from the lake, and the geographic coordinates of where they worked each day. This information is used to produce a milfoil distribution map and summary table, both of which are updated weekly to show the distribution of milfoil around the lake and the progress of the divers in removing it.
The AWI also monitors aquatic plants as an independent assessment of the control effort. Milfoil density is measured monthly from May through October along transects located at 15 sites in the lake and one non-managed site in Fish Creek Pond (west side of RT 30 bridge).
Scroll down the page to view milfoil distribution map and transect update.
MILFOIL DISTRIBUTION MAP
- Updated July 24, 2008 -
AVERAGE MILFOIL DENSITY
SITE SPECIFIC MILFOIL DENSITY
- Average milfoil density for the fifteen monitoring locations in Upper Saranac Lake for August was similar to average milfoil density for the same time period in 2006 and 2007
- Milfoil continues to be present at more sites in August 2008 compared to August 2007, with 8 of 15 sites having milfoil present in 2008 compared to 4 of 15 sites in 2007*
- Milfoil density at the non-managed site in Fish Creek Pond was 512 stems per acre in August 2008 compared to 121 stems per acre in August 2007; this 323 percent year-over-year increase in milfoil density suggests better growing conditions in 2008 compared to 2007, which may partly explain both the increase in average milfoil density and the increase in the number of sites with milfoil present in 2008
*2007 site specific results located in annual report to USLF