Bay Area/ San Jose

Foster City Lagoon Battles Persistent Problem on Algae Invasion

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Published on September 12, 2023
Foster City Lagoon Battles Persistent Problem on Algae InvasionSource: Foster City

Warm weather has left a mark on Foster City Lagoon, leading to a troubling increase in the presence of algae. Although not harmful, the dead algae results in water discoloration and unsightly floating material. Foster City's Public Works Department is diligently working on mitigating this issue through a multi-pronged approach, aiming to restore the lagoon quickly and efficiently. The city acknowledges that the algae problem can be more acute in some years than others, but efforts are being made to eradicate it and improve the lagoon's condition, according to a recent announcement of Foster City.

Andrew Brozyna, Public Works Director, has assured residents that the department is taking swift action to remedy the situation, stating, "We fully expect the algae to subside." The press release of Foster City detailing the cleanup plan mentions the removal of accumulated dead algae on the water's surface, a process that will continue as needed in the coming weeks. To prevent future occurrences, crews are adding organic blue pond dye in the water, which will impede algae growth by slowing the process of photosynthesis. Additionally, the lagoon level will soon be raised to introduce new, cooler water and promote water exchange.

Algae growth is not a new struggle for Foster City. In fact, instances of algae invasion have been reported in previous years. For instance, similar efforts to combat algae were put in place in 2018 when the city faced rising levels of algae during an unusually warm summer. Last year, 2022, saw the introduction of various methods to enhance water circulation that proved effective in curbing the problem, as reported by another Foster City article. The ongoing struggle with algae may be attributed to the region's changing climate and patterns of warm weather. Understanding these factors and adopting strategies to tackle similar situations in the future is essential for ensuring the health and pristine appearance of the Foster City Lagoon.

The importance of maintaining the lagoon's health is not just for aesthetic purposes. This body of water serves as a crucial resource for the entire community, a hub for recreational activities, and a home to diverse aquatic life. Furthermore, the lagoon contributes significantly to the local ecosystem and serves as a crucial component of the city's flood protection system. With this in mind, it is clear that keeping the lagoon in prime condition is at the forefront of Foster City's objectives.

For residents of Foster City who might have concerns or questions regarding the lagoon's algae situation, the Public Works Department has encouraged communication through their hotline at (650) 286-3270. More information can also be found by visiting the city's website at fostercity.org.