The red river reservoir is located in the northeast of Gansu city of Longnan province Lixian county. Here the Northern Wei to the Yang Lian County jurisdiction, the Ming Dynasty Yokogawa, Qing mu Yili. In 1941 beginning set he Xiang Heng, 1961 alterations to the river people's commune, 1983 recovery Red River Township establishment. Lying in the territory in the northwest, Southeast of the low, for obvious hilly and gully area, 2139 meters above sea level, the highest, with an average altitude of about 1700 meters in is in the valley, mild climate, abundant rainfall, less and less mountainous Sichuan. Loess and red clay soil. Crops to wheat, corn, potato based.
追答红河水库位于甘肃省陇南市礼县县城东北。此地北魏为阳廉县辖地，明朝为横河里，清朝为慕义里，1941年始置横河乡，1961年改建为红河人民公社，1983年恢复红河乡建制。境内地势西北高，东南低，为明显的梁峁沟壑区，最高海拔2139米，平均海拔在1700米左右，多属河谷地区，气候温和，雨量较多，多山少川。土质多为黄土和红粘土。农作物以小麦、玉米、洋芋为主。