Page - 609 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 2 Ambiesta dam: typical section Ambiesta barrage: section typique  Normal operating water level: 484 m a.m.s.l.  Maximum water level: 485.50 m a.m.s.l.  Dam volume: 28,734 m3 of concrete  Crest length: 144.64 m  Dam thickness (at the top): 1.80 m  Dam thickness (at the toe): 5.52 m Ambiesta dam (Fig. 2) has been equipped with following ancillary struc- tures:  Surface outlet on the left side, equipped with gates, with flood discharge of 72 m3/s;  Surface spillway on the dam body with flood discharge of 120 m3/s;  Bottom outlet with discharge capacity of 48 m3/s;  Water intake structure on the right flank of the reservoir, which feeds two different tunnels with a diameter respectively of 4.40 m and 5.15 m, that feed Somplago hydroelectric plant. 609