Zalan is a concrete dam. Its typical cross section can be described as follows:
• Height of the Dam: 24.50 m from river bottom at dam axis;
• Stream Bed Level: 915.00 m a.s.l.;
• Width of the valley at the Dam site: about 30 m at the stream bed level;
• Crest elevation: 949.00 m a.s.l.;
• Crest width: 7 m;
• Length of the dam (at crest level): 150 m;
• Maximum Water Level: 944.00 m a.s.l.;
• Maximum Dam Operation Level: 939.50 m a.s.l.;
• Maximum capacity: 2’112’500 m3;
• Normal water level: 939.50 m a.s.l.;
• Dead Storage: 2’173 m3 (at a level of 917 m a.s.l.);
• Reservoir area: 0.17 km2;
• Catchment area: 456 km2;
• Spillway Project Flood: 1’372 m3/s (1’000 yrs Return Period);
• Spillway global length: 75 m.
