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1 四湖流域基本情况四湖地区位于江汉平原腹地(见附图)。因区内有长湖、三湖、白露湖及洪湖而得名。垸内面积10 375km~2,耕地约800万亩,人口400万。地面高程:西北丘陵区在40m以上,东南部的平原湖区在24～36m(吴淞高程系)。平原湖区占总面积的77％。历史上在江
1 Four Lake Basin basic situation Four Lakes region is located in the hinterland of Jianghan Plain (see photo). Because of the area has a long lake, three lakes, white lake and Honghu named. The embankment area of 10 375km ~ 2, about 8 million acres of arable land, a population of 4000000. Ground elevation: Northwest hilly area in more than 40m, southeastern plain lake area in the 24 ~ 36m (Wusong elevation system). Plain Lake area accounts for 77% of the total area. Historically in the river