一、基本情况:棋盘山水库位于沈阳市北郊东部山丘区,灌溉为主的中型水库。总库容为8016万立方米,设计灌溉面积为1.78万亩。到1985年水田面积基本稳定到1.5万亩。因此,从完工到现在,历年都有大量弃水。根据统计,灌区历年实灌面积如表1。 First, the basic situation: Qipanshan Reservoir is located in the eastern suburbs of Shenyang City, northern hills, irrigation-based medium-sized reservoirs. The total storage capacity is 80.16 million cubic meters, designed irrigation area of ​​1.78 million mu. By 1985 the paddy field area basically stabilized to 15000 mus. Therefore, from completion till now, there has been a large amount of waste water over the years. According to statistics, the irrigation area over the years real irrigation area as shown in Table 1.