Makes desert land green, so that it's suitable for farms. One large noria is cheaper to maintain and covers more ground than two small norias.
Once a Noria is almost empty, you'll receive a warning that your noria is drying up. To keep the land not drying again you need to pay 1 gold coin for every ton of water replinished. Use the "up arrow" in the upper right of the noria's info panel to replenish it.
Also see Noria exploit.
The Nomads' SecretEdit
|1||100||Capacity per Noria +500|
|2||200||Capacity per Noria +1000|
|3||300||Capacity per Noria +2000|