Klabava Reservoir, reservoir in Plzeňské Předměstí (Rokycany), Czech Republic

Klabava Reservoir is a large body of water in Plzeňské Předměstí, built with a dam to manage water flow for the surrounding region. The flat terrain around it features open grass areas, scattered trees, and walking paths that lead along the waterline, creating a simple natural setting.

Iron ore mining began at Ejpovice in 1954, and the Klabava was diverted into two tunnels around the pit. To keep floodwater out of the mine, the dam was completed upstream in 1957. Mining ended in 1967 and the deposit was flooded eight years later, so the reservoir lost its original purpose and now serves minimum flow, recreation, fishing and flood protection.

Since the Ejpovice ore deposit was flooded in 1975, the reservoir has served mainly for recreation and fishing. Anglers stock it with carp species, pike, catfish and asp, and the lowered water level in the rear part attracts waders such as the reed bunting and European beaver.

The earth-fill dam stands at river kilometre 14.735, with its crest at 352.2 m above sea level; the side spillway was rebuilt in 2017–2018 after its capacity proved insufficient in the 2002 flood. A small hydroelectric plant with a Kaplan turbine, built below the dam in 2018, has a maximum output of 200 kW. The reservoir holds 5,664,000 m³ over 32 hectares.

The Klabava was diverted around the Ejpovice iron-ore mine into two tunnels so that flooding would not inundate the pit; the dam built upstream in 1957 was part of that protection. Mining ended in 1967, and eight years later the flooded open pit became a lake, leaving the reservoir without its original purpose.