Why are reservoirs dangerous?

Reservoirs can be dangerous due to the risk of sudden water releases, which can lead to flooding downstream and pose a threat to life and property. Additionally, the water in reservoirs can be cold and fast-moving, creating hazardous conditions for swimmers and boaters. Poor visibility and submerged obstacles can also increase the likelihood of accidents. Finally, stagnant water in reservoirs may harbor harmful bacteria or pollutants, posing health risks to those who come into contact with it.