The Nasiriyah Drainage Pump Station is a land drainage pumping station in Iraq 10 km southeast of Nasiriyah in the province of Dhi Qar. The station pumps farm run-off collected by the Main Outfall Drain (MOD) north of the Euphrates River in Dhi Qar and Muthanna provinces to a siphon under the Euphrates where it is then returned to the MOD and eventually discharged in the Persian Gulf. The pump station relieves water back-up and is a critical component of a larger agricultural drainage system designed to drain 1.5 million hectares of land in order to reduce soil salinity. Consisting of 12 pumps, each with a 20 m³/second (316,000 gal/min) capacity, it is the largest drainage pump in the Middle East.