Wikipedia: Henry Darcy - Biography, portrait, and related links. - http://en.wikipedia.org/wiki/Henry_Darcy
Henry Darcy - Short biography from the European Geophysical Society. - http://www.copernicus.org/EGU/egs/darcy.htm
Henry Darcy and His Law - Contributions to understanding flow in porous media. Includes biography, discussions of basic concepts and the Darcy-Weisbach equation, and a lab procedure for falling-head permeability tests. - http://biosystems.okstate.edu/darcy/