Keeping it partly out of the ground also helps deal with high water tables like they have in the Netherlands; you don't want it popping up. (treehugger.com)
Hamilton's team reports that the perennial system's evapotranspiration did not differ greatly from corn — a finding that contrasts sharply with earlier studies that found particularly high perennial water use in areas with high water tables. (sciencedaily.com)
A hydrologist named Chen Xing objected to this policy on the basis that it would lead to water logging and alkalinization of farm land due to a high water table produced by the dams. (sjsu.edu)