Pumping Station
When low lying areas of land are drained, the general method is to dig drainage ditches. However, if the area is below sea level then it is necessary to pump the water upwards into water channels that finally drain into the sea.
The Victorians understood this concept, and in the United Kingdom they built pumping stations with large water pumps, powered by large steam engines to accomplish this task. In Lincolnshire, large areas of wetland at sea level, called The Fens were turned into rich arable farmland by this method. The land is full of nutrients because of the accumulation of sedimentary mud that created the land intially.