No, the Douro River has not dried up, though like many major European rivers, it has faced fluctuations in water levels due to seasonal droughts and climate patterns. In recent years, particularly during intense summer heatwaves in Iberia, there have been concerns regarding low water levels that can sometimes impact river cruise itineraries, occasionally requiring passengers to be transferred via motorcoach for certain segments. However, because the Douro is heavily managed by a series of dams and locks used for hydroelectric power and navigation, the river remains a permanent and flowing body of water. It is a vital artery for the Portuguese wine industry and tourism. While "low water" alerts are a reality for travelers in peak summer or during particularly dry winters, the river continues to support its famous river cruises and ecosystem.