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汾河二库水利枢纽地处汾河悬泉寺河道“S”形近直线段，河谷呈“U”形，两岸边坡陡峭，河床覆盖层为含泥砂砾石，平均厚度26m．坝区7～9月为汛期，洪枯流量相差悬殊，洪峰尖瘦，据规范选择导流标准P=5％洪水，相应流量为2040m3/s．导流方式采用全河一次断流，隧洞导流．经比较，导流方案为8m城门型隧洞泄洪，上游围堰挡水，堰高为24．35m．截流时段定于10月上旬，设计流量为13m3/s，戗堤总方量为5500m3．
The Fenhe II reservoir project is located in the near-straight section of the “S” shape of the river in the Xuquanquan River in Fenhe. The river valley is “U” shaped with steep slopes on both sides of the riverbed. The riverbed cover is silt-gravel with an average thickness of 26m. The dam area is from September to September with flood season, the difference between flood and dry flow is huge, and the peak of peak is thin. According to the standard, the diversion standard of P = 5% is selected and the corresponding flow is 2040m3 / s. The diversion method uses a river cut off, tunnel diversion. After comparison, the diversion scheme is to flood discharge of 8m gated tunnel and the upstream cofferdam is blocked, and the weir height is 24.35m. Closure period scheduled for early October, the design flow of 13m3 / s, embankment total volume of 5500m3.