Sicherheit, Stabilität und Unterstützung der Reformen
Bewältigung von Naturkatastrophen

2'650 inhabitants in three downstream settlements with 300 ha of land; 100’000 inhabitants spread over 25 settlements in the Kazincbarcika micro-region who rely on drinking water supply from the reservoir; municipal, provincial and government authorities

The primary function of the Reservoir of Lázbérc is the drinking-water supply, but in addition it is supposed to fulfill a certain role to reduce flood level. The reservoir contains a storage volume of 6.2 million m3. However, during the heavy floods in May 2010, a total of 19 million m3 were discharged through the dam’s spillway in only two weeks’ time. Even if flood protection is only a secondary use of the reservoir, flood peaks might be reduced thanks to the reservoir. The extreme flooding in 2010 resulted in severe damages of the dam’s structure. The concrete structure of the spillway is in need of repair, seepage draining adjacent to the spillway has to be improved and the downstream canal / creek got severely eroded.

Hungarian registration number: SH 2/2/4

The overall goal is to increase the flood safety of three settlements below the reservoir of Lázbérc. For this purpose, damages at the dam structure are repaired in order to reduce the danger of inundation respectively of a dam failure with a flood wave.

The damages at the dam of the Lázbérc reservoir are repaired with the renewal of various concrete sections of the spillway structure in order to prevent further deterioration and ultimately collapse thereof. Furthermore, the surface and underground-drainage on the right-hand slope (adjacent to the spillway) is rehabilitated and the downstream flood release canal is renewed to avoid erosion at the foot of the dam.

The expected results are:

• Renewed spillway structure (surface of 3’706 m2) of the Lázbérc reservoir dam;
• Rehabilitated surface and underground-drainage on the right-hand slope (length of 51 m, adjacent to the spillway);
• Renewed downstream flood release canal with repaired sills and partial slope protection on a length of 105 m.