Mostiště Reservoir, reservoir in Vídeň, Czech Republic

Mostiště Reservoir is a dammed lake on the Oslava River about 4.5 km north of Velké Meziříčí. Its 340.7 m long stone dam, 41.7 m high, holds 11,937,000 m³ of water; the lake reaches 5,385 m in length and covers about 93 ha. The dam has a curved right section with a 150 m radius and a straight left section.

The reservoir was filled in the early 1960s as part of regional water management efforts. Built from stone quarried nearby, it was designed to supply drinking water to surrounding communities and protect towns from flooding during heavy rains.

The dam is accessible by walking paths and cycling routes that run along its length. Plan your visit during drier months, as the spillway can be active during spring when water flows are heavy and paths may be difficult to traverse.

The submarine-shaped structure is an armature shaft on the water main to Třebíč near Rudíkov, and the pyramid-shaped structure is a water tank near Hroznatín; both stand away from the reservoir itself. The main dam, by contrast, is a rockfill embankment with a sloped clay sealing core, and its stone was quarried in the area later flooded by the lake.