The reservoirs are fed by the following waters:

The reservoirs are fed from a stream rising on Creuch Hill.

The reservoir is also fed by ground water and many small intermittent mountain streams during spring runoff.

The reservoir is fed by a tributary of the River Penk.

The reservoir is principally fed by the small river that starts near Ruthvoes, about 4 miles (6km) to the east.

The reservoir is fed by two small streams which enter from the north via two weirs.

The reservoir beyond that dam is fed by the stream you see falling down the face of that cliff.

The reservoirs on the south wall of the complex were fed with water from the Marcian Aqueduct.

These reservoirs were fed by relatively small water catchment areas on the western side of The Rock.

The reservoir is fed almost exclusively from the Angram dam.