The demand for newly constructing of drainage pumping station in Red river delta has increased recently. Total drainage volume for the whole region in 2006 was , and it was predicted to increase to in 2020 [1]. The average drainage coefficient for the year from 2010 to 2020 will be l/s per hectar, three and a haft time higher than the average drainage coefficient for the period from 1954 to 1973; times higher than 1973 to 1976 and times higher than 1976 to 2000. This article aims to provide the primary analysis of objective.
