5.8.4 Gleason Lake Internal Load Management

ProjectGleason Lake Internal Load Management
DescriptionDesign and implementation of strategies to reduce internal phosphorus loading, including: feasibility study; aquatic vegetation survey update and management plan; fishery survey update and management plan; biomanipulation strategies that may include aquatic vegetation management, zooplankton community and fishery manipulation, and chemical treatment.
NeedThe Gleason Lake Management Plan prepared in 2003 identified the reduction in phosphorus load to Gleason Lake both from the subwatershed and internal sources as a top priority. Gleason Lake is a shallow lake, and management of its internal load will require different strategies than for deeper lakes. This project would identify and implement a suite of strategies to manage aquatic vegetation, the fishery, and zooplankton community to achieve water quality and clarity goals. The project includes an ongoing vegetation and fishery management plan. Management of invasive aquatic vegetation that contributes to lake water quality and usability issues would require annual treatment for three to five years.
OutcomeReduction in phosphorus load from internal sources estimated at 196 pounds annually; improved water clarity; more diverse aquatic vegetation community; improved aesthetics.
Estimated Cost Development of plans and implementation of strategies. Source of funds is District capital levy.$35,800

2013 Fish, vegetation, and zooplankton surveys, development of management plans, cooperative agreement

2014 Implementation of strategies