Frankley Reservoirs VRP Frankley Reservoirs are two reservoirs that supply drinking water for the city of Birmingham. The Base of Controlled Airspace here is 2500ft. This image is taken facing North East, with Birmingham City Centre in the distance. To the West of here by approximately 2 miles is the M5 motorway which runs South West to North East. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading...