For the irrigation system with central control system, the coefficient of the total flow can be 0.8 because of the computer auto flow management, the flow of pump station is 1180 GPM.

• 没有配置中央控制系统的而有场地分控箱的喷灌系统，因为可以做人工流量管理，所以总流量的系数可以取0.；7，即泵站流量为1348GPM