Buško Blato, Artificial reservoir in Tomislavgrad Municipality and Livno, Bosnia and Herzegovina.

Buško Blato is an artificial reservoir at 716 metres above sea level, extending from Livanjsko Polje. It covers 55.8 square kilometres, with two thirds in Tomislavgrad Municipality and one third in Livno. Its maximum depth is 15 to 17 metres and its total volume is 782 million cubic metres.

The reservoir was created in 1974 through the construction of a dam to generate electricity, flooding large areas of agricultural land. This project connected the region's power supply to water management control for decades to come.

The name Buško blato refers to the marshland that preceded the reservoir, and the surrounding area includes villages such as Prisoje. The lake's fish stock, including carp, trout, nase, Prussian carp, chub and catfish, supports local fishing. The municipalities of Livno and Tomislavgrad earn more than 750,000 KM annually from the lake's waters, according to unofficial figures.

The lake allows visitors to swim, sail, and fish in suitable conditions. The best time to visit is during warmer months when water temperature is comfortable and conditions favor outdoor activities.

The reservoir's water level can vary by several metres, and the shoreline shifts accordingly. The dam system feeds the Orlovac hydroelectric plant in Croatia, with an installed capacity of 237 MW and average annual output of 366 GWh. The lake holds carp, trout, nase, Prussian carp, chub and catfish.