桓仁水电站位于寒冶地区,冬季由11月至翌年4月,长达5个月。每年3月下旬至4月上旬,因春暖开冻而形成春汛流冰,夏季7至9月多雨,汛期洪水集中,其洪峰流量与枯水季流量变差很大(5%全年洪峰流量为7,600立方米/秒,1月份5%流量为32.65立方米/秒),年內逐月径流量分布极不均匀,7、8月流量約占全年径流量的50%左右,而枯水季11月至 Huanren Hydropower Station is located in Han Ye area, the winter from November to April the following year, up to 5 months. From the end of March to the beginning of April of each year, the flood season is formed by the spring warm-thaw, the rainy season is from July to September in summer, the flood is concentrated in the flood season, and the peak flow and the dry season flow are greatly deteriorated (5% 7,600 cubic meters per second, 5% of the flow in January was 32.65 cubic meters per second). During the year, monthly runoff distribution was extremely uneven. In July and August, the flow rate accounted for about 50% of the annual runoff, while the dry season November to