Tidal rivers provide essential water for drinking and irrigation. However, a new international study confirms these vital sources are facing increased vulnerability to saltwater contamination.
The research shows that climate-change-induced drought and sea-level rise are intensifying salinity issues. And localized human activities such as channel deepening and excessive road salt use contribute to the problem.
This saltwater contamination affects rivers across all continents and damages critical infrastructure. It can exacerbate hypoxia (low-oxygen zones) and mobilize contaminants like nutrients and metals. These secondary effects further stress water systems and their associated infrastructure. Researchers emphasize that the freshwater-to-saltwater transition fluctuates dramatically due to tides, seasons, stream flow, and sea level.
Explore the full research paper to learn more about these findings.
