Boulder is sending divers underwater to fight an invasive species

Boulder is sending divers underwater to fight an invasive species

Boulder staff have launched a new effort at Boulder Reservoir to control invasive Eurasian watermilfoil. The plant was first spotted in the reservoir in 2022 and has since covered much of the reservoir’s western coves, displacing native species, creating obstacles for recreationists and potentially causing problems for infrastructure if it spreads further. After attempts to use an herbicide were abandoned, the city shifted to a diver-based progr…