聊城市位于山东省西北部平原地区。境内有马颊河、徒骇河两条主要河道直接入海,但因坡降小而河身浅窄,渲泄不够通畅。根据历史记载和当地的地貌特征证明黄河主流曾流经市境,地貌特征也和华北平原其它地区基本相同,有各种岗洼和开阔的缓斜低平地及有粗细不同及粗细相间的沉积物质,水文地质条件也相应地复杂。土壤类型很多, Liaocheng City is located in the plains of northwestern Shandong Province. The territory of the Ma River, only Tu Haihe two major rivers directly into the sea, but due to the slope of the river narrow and shallow, rendering not smooth enough. According to the historical records and the local geomorphic features, it has been proved that the mainstream of the Yellow River has been flowing through the city. The landscape features are also basically the same as those in other parts of the North China Plain. There are various types of potholes and open gently sloping lowlands and sediments with different thicknesses and thicknesses , Hydrogeological conditions are also correspondingly complicated. Many types of soil,