5.8.2 Jennings Bay Internal Load Management Project

ProjectJennings Bay 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 Painter Creek Feasibility study identified a number of projects intended to reduce pollutant loading from the Painter Creek subwatershed into Jennings Bay as well as an internal load management project that also includes Harrisons Bay and West Arm. 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. The increased clarity resulting after control of phosphorus loads can result in extensive aquatic vegetation blooms that if not managed can again increase internal phosphorus loads. Aquatic vegetation management should be conducted for three to five years to control reestablishment of invasive aquatic vegetation.
OutcomeReduction in phosphorus load from internal sources estimated at 200 pounds annually; improved water clarity; more diverse aquatic vegetation community; improved aesthetics.
Estimated Cost and FundingDesign, construction, project management. Funding source is the District capital levy,$1,995,200

2015 Design, easement acquisition

2016 Construction