The Yovkovtsi Reservoir (язовир „Йовковци“) is situated in northeastern Bulgaria, 5 kilometres (3.1 mi) away of the town of Elena. It was built 20 years ago on the Veselina River. The reservoir is located in the territory of Elena municipality, and supplies water to Veliko Tarnovo, Gorna Oryahovitsa, Lyaskovets, Strazhitsa, Zlataritsa, Elena, Gabrovo and Dryanovo. 223 square kilometres (86 sq mi) of the reservoir are hygienic protected zone.