通辽市地处内蒙古自治区东部,松辽平原西端,科尔沁沙区腹地,总面积约6万平方公里,属于干旱和半干旱气候区,该区农牧交错,坨甸相间,生态环境脆弱,植被稀疏,多年平均降雨量在200～100毫米之间。受气候、河流、地形、地貌、地质条件的影响,水资源在地区上和时空上分布不均匀,南北 Tongliao City is located in the eastern Inner Mongolia Autonomous Region, the western end of the Songliao Plain, the hinterland of Horqin Sandy Area, with a total area of ​​about 60,000 square kilometers, belonging to the arid and semi-arid climatic zone, where the staggered farming and pastoral areas, lush and lush, fragile ecological environment, The average annual rainfall is between 200 and 100 millimeters. Affected by the climate, rivers, topography, geomorphology and geological conditions, water resources are unevenly distributed in regions and time and space.