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浙江是全国面积较小的省份之一,地处东南沿海,气候温和,雨量较丰沛,自然条件有利于工农业生产的发展。惟境内河流多源短流急,年降雨又多集中在梅、台两季,故所建水库,虽然集雨而积不大,而洪峰流量及洪水总量并不小,往往须修建具有相当规模的泄洪设施。此外,在滨海平原地区,又因地势低洼,加上海潮顶托影响,排水不畅,必须修建相应规模的挡潮排洪设施。概括起来说,浙江泄水建筑物基本上可归纳为二大类:一是水库泄洪,一是沿海平原排洪除涝。
Zhejiang is one of the smaller provinces in the country. It is located on the southeast coast with a mild climate and abundant rainfall. The natural conditions are conducive to the development of industrial and agricultural production. However, the multi-source domestic short-stream short-stream, rain and more concentrated in the plum, Taiwan and two seasons, so the reservoir built, although the plot is not plotted, and flood peak flow and flood volume is not small, often have to build a considerable Scale flood discharge facilities. In addition, in the coastal plain area, due to the low lying area coupled with the impact of the tidal flats and the poor draining of water, a tidal surge and flood discharge facility of a corresponding scale must be constructed. To sum up, basically, Zhejiang drainage structures can be grouped into two categories: one is flood discharge of reservoirs, and the other is flood discharge and waterlogging along coastal plain.