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选择和县陈桥洲进行居民接触疫水行为定点观察，根据长江水利委员会提供的水文资料推算三峡建坝前后和县陈桥洲水位变化。结果表明洲滩地区居民接触疫水主要以生产性如捕鱼、放牧、打草、打粽叶等为主，但生活性接触疫水仍占一定比重；三峡建坝后，陈桥洲水位变幅不大，滩地水淹时间较往年略减少；推测三峡建坝后，当地居民因放牧而接触疫水可能增加，因捕鱼而接触疫水可能减少，因其它方式接触疫水可能没有变化。
The author selected Chenqiao Island to carry out the spot contact observation of residents’ contact with the epidemic water and calculated the water level change of Chenqiao Island before and after the construction of Three Gorges Dam according to the hydrological data provided by Yangtze River Water Conservancy Commission. The results showed that the residents in Chazhoutan mainly came into contact with the contaminated water mainly in terms of productivity such as fishing, grazing, playing grass, playing the leaves and so on, but the contact water still occupied a certain proportion. After the Three Gorges Dam, It is estimated that there may be more contact with polluted water by local residents due to grazing after the Three Gorges Dam is constructed, the contact with polluted water may be reduced due to fishing, and there may be no change in contact with polluted water due to other ways.