What is the main function of a reservoir in water distribution?

The primary role of a reservoir in water distribution systems is to serve as a storage facility that balances the supply of water with demand. This balance is crucial, as water usage can fluctuate significantly throughout the day and across different seasons. By storing water during periods of low demand and releasing it during peak usage times, reservoirs ensure that an adequate supply is available when needed.

Additionally, reservoirs help to smooth out variations in water supply that may occur due to changes in precipitation, seasonal variations, or operational circumstances within the water supply system. They can also provide a buffer against emergencies or unexpected events that may temporarily disrupt the water supply. By maintaining this constant supply balance, reservoirs support both the reliability and efficiency of the water distribution network.