The era of infiltration

Abstract. Inspired by a quotation from Howard Cook in 1946, this paper traces the evolution of infiltration theory runoff work Robert Horton and LeRoy Sherman 1930s to early digital computer models 1970s 1980s. The reasons for popularity are considered its impact on way which hydrological responses were perceived several generations hydrologists. Reconsideration perceptual model many catchments, partly as result greater appreciation contribution subsurface flows hydrograph indicated tracer studies, suggests more precise utilisation terms and, particular, that use surface should be avoided.