Sugar plantations dramatically impacted the environment around them. In an 1821 account, prior to the entrenchment of sugarcane plantations in
Aiea, the area is described as belonging to many different people and being filled with
taro and banana plantations along with a
fish pond. This
subsistence farming would not last long. Plantations were strategically located throughout the Hawaiian Islands for reasons including: fertile soil area, level topography, sufficient water for irrigation, and a mild climate with little annual variation. These plantations transformed the land primarily to suit water needs: construction of tunnels to divert water from the mountains to the plantations, reservoir construction, and well digging. Water was always a serious concern for plantation managers and owners. In the early 20th century, it took one ton (1000 L) of water to produce one pound (500 g) of refined sugar. This inefficient use of water and the relative lack of fresh water in the island environment were fiercely compounding
environmental degradation. Sugar processing places significant demands on resources including irrigation, coal, iron, wood, steam, and railroads for transportation. Early mills were extremely inefficient, producing molasses in four hours using an entire
cord of wood (3.6 m3 ) to do so. This level of wood use caused dramatic
deforestation. At times,
ecosystems were entirely destroyed unnecessarily. One plantation drained a
riparian area of to produce cane. After draining the land and forever altering the biodiversity levels, they discovered it was an ancient forest, so they harvested the trees for timber, only then to find that the land was completely unsuitable for sugarcane production. == Decline of plantations ==