在拟定农村安全饮水工程用水对象及其组成的基础上，通过对具体用水对象全年需水量的分析，采用长系列计算方法，应用水量平衡原理，通过对规划集流面与需水设施容积组合条件下可调控利用水量及其供需平衡的调节计算，分析确定了不同降水量地区满足安全饮水的规划集流面面积以及与之配套的蓄水设施容积组合，提出了雨水利用条件下农村安全饮水工程设施最佳匹配模式。

Based on study out consumer and composing of rural drinking water project, analyzing the balance of yearly water demand, the method of long-series was adopted based on principle of water balance. Computing water balance on water supply and requirement through matching of planning catchment and storage, the planning catchment and matching storage was confirmed in varying rainfall regions, the pattern of optimum matching of project on rural drinking water was confirmed based on rainwater harvesting.