BIG ROUND LAKE PROTECTION AND REHAB DISTRICT: Big Round Lake Aquatic Plant MP & Phosphorus Study


Activities: In-lake chemistry monitoring, tributary chemistry and flow monitoring, sediment phosphorus monitoring, nutrient budget development, aquatic plant management plan development Project deliverables include: water quality and flow data entered in SWIMS; internal load and nutrient budget report; aquatic plant management plan Specific project conditions: WDNR\2019s Aquatic Plant Management in Wisconsin guidance shall be followed for aquatic plant management plan development. The NOR Native Plant Protection Strategy shall be integrated into the APM plan. This scope summarizes the project detail provided in the application and does not negate tasks/deliverables described therein. The grant sponsor shall submit all data, records, and reports, including GIS-based maps and digital images, to the Department in a format specified by the regional Lakes Biologist.

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Reports and Documents
The objectives of these investigations were to examine the development of summer algal blooms in Big Round Lake (Table 1) in relation to P loading from the Straight River watershed and from bottom sediment during temporary anoxia. The goals of this research were to develop an estimate of summer watershed and sediment-derived internal P loading for use in P budgetary analysis and future forecasting of the impacts of internal P loading management on water quality.
Although a comprehensive lake plan is in effect from 2016 through 2025, this aquatic plant management plan (APMP) was initiated to focus on curly-leaf pondweed, phosphorus loading, and algae blooms. The Big Round Lake Protection & Rehabilitation District (“District”) was formed in 1967 and is the entity sponsoring this APMP. The District partnered with Aquatic Plant and Habitat Services LLC to create a 5-year management plan that is WDNR-approved and District-adopted. Public input was gathered in April 2019 (Section 10.0) and the management plan was released for public and WDNR review in June 2019.
Letter approving the 2019-2023 Aquatic Plant Management Plan for Big Round Lake in Polk County.
Water chemistry data.
Activities & Recommendations
Grant Awarded
Grant LPL170819 awarded