Loon Lake Invasive Aquatic Vegetation Control Project
The Aquatic application was completed on 9-8-2011 . The Riparian Application
for Yellow flag Iris was completed on 9-9-2011 .
All swimming restrictions are lifted.
As of September 15th, Loon lake has been cleared for Irrigation
and drinking except for the lagoon area northwest of in the lake
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Loon Lake is a 1,100 acre (surface area) water body that is approximately two (2) miles wide, one (1) mile long, and has a maximum depth of 100 feet. At a water surface elevation of 2,382 feet, the lake is located in Stevens County, Washington. Loon Lake is a popular destination for water-based recreation including swimming, fishing, and boating.
Eurasian Watermilfoil (Myriophyllum spicatum) - hereinafter referred to as EWM is a non-native invasive aquatic plant and was first discovered in Loon Lake in 1995. In 1999, the Lake Management District was formed in order to combat this invasive species. Lakeland Restoration Services, LLC was hired during the spring of 2009 to carry out herbicide applications on the lake. 58 acres of EWM was treated in 2009. In 2010, as part of Lakeland's treatment strategy, the same treatment areas were treated again, along with a new infestation found at the North side of the lake. Follow-up surveys showed a significant reduction of EWM.
Project Goals
The goals of this project are to:
- Significantly reduce/virtually eliminate EWM from Loon Lake.
- Encourage healthy native plant re-establishment.
- Demonstrate to the residents of Loon Lake that EWM can be significantly controlled thereby encouraging their efforts to contain the plant.