Motorized water craft likely have a negative impact on this plant. The spread and growth of various aquatic invasive species could also have an impact, but this has not been verified. More work is needed to determine the direct and indirect threats.

Qualitative evidence suggests that motorized water craft cuts this plant into fragments and creates enough wave action to negatively impact shoreline populations. More work is needed to determine the long-term impacts of these activities and ways to minimize the impacts. Canoes and other such water craft seem to cause little to no harm.

Research is needed to determine population fluctuations over time.