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State Water Board trainers outline HAB monitoring design and satellite screening tools
Summary
State Water Board trainers described how to design monitoring plans for harmful algal blooms (HABs), differentiate planktonic and benthic blooms, and use satellite tools (Sentinel‑3 CI and chlorophyll layers) to screen large lakes while stressing field verification and toxin testing.
Anna Holder, open data science, equity and tribal coordinator at the State Water Resources Control Board, opened a virtual training to walk tribal partners and water managers through monitoring design for harmful algal blooms (HABs) and the tools SWAMP uses to screen and prioritize field work.
Carly Nelson of the Board’s freshwater estuarine HAB program said cyanobacterial blooms can harm people and ecosystems: “They can change the physical conditions of a water body … and it can also cause dissolved oxygen levels to drop pretty quickly, which we often see with those massive fish die offs.” She described two broad bloom types: planktonic blooms that form visible surface scums and benthic mats attached to streambeds, and she emphasized that sampling methods and toxin…
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