Dyakovo Reservoir, reservoir in Bulgaria

Dyakovo Reservoir is an artificial lake in the Dyakovo and Kremenik land areas near Dupnitsa, formed by a 510-metre earth-fill dam whose crest sits at 666.45 m. Completed in 1975, it covers 199 hectares and holds 35 million m³. Its shape is likened to an open hand, and because its own catchment is small it is fed by diversions from the Otovitsa and Bistritsa rivers and from the Dzherman, Valyavitsa, Fudinya and Goritsa.

The reservoir was constructed in 1975 and has served as a key water storage facility for the region ever since. This dam marked a period of development that transformed the landscape while providing essential water management and irrigation resources to nearby communities.

The reservoir is operated by Napoitelni Sistemi and supplies cooling water to the Bobov Dol thermal power plant, while also providing domestic water to neighbouring settlements. Its small own catchment is supplemented by two diversions: from the Otovitsa and Bistritsa rivers (3.30 m³/s) and from the Dzherman, Valyavitsa, Fudinya and Goritsa rivers (1.37 m³/s).

The reservoir is easily accessible from nearby towns like Dupnitsa and invites walking along the shoreline or sitting with views across the water. The southern side of the dam offers the most panoramic perspective for taking in the surroundings and the open landscape.

The reservoir's own catchment is tiny, so it is filled through two diversions: one from the Otovitsa and Bistritsa rivers with a capacity of 3.30 m³/s, and one from the Dzherman, Valyavitsa, Fudinya and Goritsa rivers at 1.37 m³/s. Its outline is often compared to an open hand.