This recently published article from a Spanish myth-busting press demystifies the following opinion: “the water that flows from rivers to the sea is lost, and that we should be instead utilised it for human consumption.”
A common misconception suggests that rivers “waste” water by flowing into the sea instead of being captured for human use. However, scientific evidence highlights that river water plays a crucial role in maintaining ecosystems, supporting marine life, and sustaining the natural water cycle. The sediments and nutrients carried by rivers nourish coastal ecosystems, fisheries, and deltas, which are essential for biodiversity and coastal stability.
While dams and reservoirs help regulate water supply and generate hydroelectric power, they also disrupt sediment flow, degrade soil fertility, and impede groundwater recharge. Furthermore, dammed water evaporates more rapidly, especially under rising global temperatures, potentially worsening water scarcity. In some cases, reservoirs can even contribute to climate change by releasing methane, a potent greenhouse gas.
Experts emphasise that alternative water management strategies—such as aquifer recharge, rainwater harvesting, and improved wastewater recycling—can provide sustainable solutions without harming river ecosystems. Ensuring the natural flow of rivers is vital for ecological balance, fisheries, and long-term water security.
Pao Fernández Garrido, from Dam Removal Europe has collaborated in the article.
FreeFlowLab 