Ditches, canals, streams and ponds in cities and villages. Small and micro water bodies refer to ditches, canals, streams and ponds distributed in cities and villages, which have the characteristics of small scale, large quantity, poor mobility and weak self-purification ability. In order to solve the problems such as the pollution of small and micro water bodies is difficult to purify in dry season, and the instantaneous hydraulic load impact is great in flood season, the team of Professor Bin Chen from Beijing Normal University put forward a scheme of joint regulation and control of small and micro water bodies with multiple water sources and pumps.