Page - 1114 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 1 The Aar river cuts through Switzerland from South to North. The two case studies are highlighted among the 217 SFOE-supervised dams [after 4] 3. CASE STUDIES: FLUMENTHAL AND RUPPOLDINGEN HPPS Main descriptive features of the two large run-of-river plants case studies are summarized as follows: Year of Construction Head water level 1970 426.0 m a.s.l. Number of turbines 3 Kaplan bulb turbines Impounding head 9.0 m Storage capacity > 500’000 m3 Capacity 25 MW Av. annual production 146 GWh Main water-retaining components 3 radial-gated weirs, each 12.50 m wide 2 piers, each 5.0 m wide Powerhouse (W x L): 46 m x 46 m Left and right abutment guide walls 1114