Units and Measurements 1(Volume)

Here are some useful units used in Pakistan
Land measurements
Murabba Gaz (square yard) = 3 feet x 3 feet
1 Karm = 3.361 Murabba Gaz (square yards)
1 Marla = 9 Karm
1 Kanal = 20 Marlas
1 Killa = 1 Acre =8 Kanals (4,840 square yards or 43,560 square feet)

one acre was historically considered as the amount of land a yoke of oxen could plough in one day
another bigger unit is Murabba, a status symbol in Agriculture of Pakistan. its size varies, but usually it is considered equal to 25 Acres

Volume measurements
Most countries use cubic meter as the basic unit for water volume.

Acre foot
water measurements in Pakistan are mostly done in acre foot.
it is simply the amount of on foot deep water on an area of one acre.
1 acre foot = 1233.48184 cubic meters

million acre foot (MAF) is commonly used to measure large volumes of water.

similarly billion cubic meter (BCM) is used in countries following SI system.

1 million acre feet (MAF) = 1.23348184 Billion cubic meters (BCM)