Los reservorios que forman la cadena son, de noroeste a sudeste: Catcleugh Reservoir → Colt Crag Reservoir → Little Swinburne Reservoir → Hallington Reservoirs → Whittle Dene.
Los reservorios que forman la cadena son de noroeste a sureste: Little Swinburne Reservoir → Hallington Reservoir → Catcleugh Reservoir → Colt Crag reservoir → Whittle Dene.