When storm surge from a hurricane flows into freshwater what is likely to occur?

When storm surge from a hurricane flows into freshwater systems, it can lead to salinity changes that harm aquatic ecosystems. The influx of saltwater can disrupt the balance of freshwater habitats, affecting fish and plant species that are not adapted to higher salinity levels. Additionally, the increased water levels can cause flooding, which may inundate surrounding areas, leading to further ecological and infrastructural damage. Overall, this interaction can significantly impact both the environment and local communities.