The dam's reservoir is called Rock Island Pool.

The dam that stops the reservoir is called Po Lo Pa, lit.

The impounded reservoir is also called Yellow Pinch Dam.

Informally, this reservoir is called the Ob Sea.

The reservoir behind the dam has no official name, but was called the Long Pool for many years.

The impounded reservoir is also called the Rydal Dam.

The reservoir behind the dam is called Medina Lake and is a major recreation area.

Generally these reservoirs are called "saving basins".

On English canals, these reservoirs are called "side ponds".

In Sanskrit a holding pond or reservoir is called a tadaka.