Concerns have been raised after dead fish were discovered in the Lower Vasse River earlier this month, prompting an investigation by environmental authorities. Data from water quality loggers in the river recorded low dissolved oxygen levels for two days prior to the incident, which may have contributed to the event. While the Lower Vasse River typically experiences phytoplankton blooms each summer, fish kill events in the system are considered uncommon. Last October, Vasse MLA Libby Mettam took aim at the management of the Vasse River in Parliament, saying it had been turned into a “dead zone”. “The areas excavated are much too small to alleviate the algal blooms or have a positive impact on water quality.