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BackArrowGreen.png Back to the Tile improvements in Civ4


A Watermill is a tile improvement that can be built upon the discovery of Machinery. It adds production (and later food and commerce) to a tile, but can only be built on flatland next to a river. Watermills cannot be built on tiles which only touch a corner of a river. Only one watermill can be built per tile-length of river.

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