|
|
|
|
|
|
The acre-inch is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, and river flows.
The cubic petametre or cubic petameter is the unit of volume. Its symbol is Pm3. It is the volume of a cube with edges one petametre in length.