The California Department of Water Resources (DWR) is set to begin a series of studies in Downtown Stockton’s McLeod Lake to investigate the causes of harmful algal blooms (HABs) that have plagued the area, especially during drought years. The first of these studies will start on August 26, 2024, and will involve the application of a non-harmful dye to the lake.
The study aims to monitor the water flow and the interaction between McLeod Lake and the San Joaquin River. The dye used, rhodamine, is recognized by the U.S. Environmental Protection Agency (EPA) as safe for humans, wildlife, and the environment. While the dye may temporarily turn the water bright pink or purplish, it poses no threat and will dissipate over time.
This initial study is scheduled to conclude by August 30, 2024, with a second study planned for early 2025. The data collected will help scientists understand the conditions that lead to the development of HABs, which cause the water to turn green and emit unpleasant odors during the hot months.
For more information, residents can contact the City of Stockton’s Community Relations Officer or visit the city’s website at www.stocktonca.gov/habs.
