Whether it's for a tranquil walk or an exhilarating windsurf, our 20 beautiful reservoirs are places where people love to go to relax and enjoy the outdoors.
They are - of course - the main source of our drinking water, with 90% of our raw water coming from reservoirs and rivers, and we manage them carefully to ensure the water going into our treatment works is good, clean raw water.
Click on the links below to find out about recreation and learn more about how reservoir levels change throughout the year.
Current reservoir storage
Total reservoir storage this week is 77.5% compared to 67.5% at this time last year.