群英水库位于焦作市西北,河南与山西交界的大沙河上游,控制流域面积165km~2,总库容1660万m~3,坝型为浆砌石重力拱坝,坝高100.5m。群英水库所处位置属太行山中深山区,这一带为暖温带大陆性季风气候,四季分明,平均气温约12.4℃,比市区一般低3℃左右,库区受地形及山势环抱影响, Qunying Reservoir is located in the upper reaches of Dasha River in the northwest of Jiaozuo City and at the intersection of Henan and Shanxi. Its control basin covers an area of ​​165km ~ 2 with a total storage capacity of 16.6 million m3. The dam type is a masonry gravity arch dam with a height of 100.5m. The location of Qunying Reservoir is in the mid-deep mountain area of ​​Taihang Mountain. This zone is a warm temperate continental monsoon climate with four seasons. The average temperature is about 12.4 ℃, which is about 3 ℃ lower than the urban area. The reservoir area is affected by the topography and the mountainous encirclement.