Nechranice Reservoir, Artificial reservoir in Březno, Czechia.

Nechranice Reservoir is an artificial lake in Březno, Czechia, that covers nearly 12 square kilometers and reaches about 46 meters at its deepest point. The water surface is framed by gentle hills, and along the shores open areas with meadows mix with sections of woodland.

Built between 1961 and 1968 on the Ohře, the reservoir was created chiefly to supply water to the nearby Tušimice power plants. Filling the valley meant clearing and flooding the villages of Čachovice, Čermníky, Drahonice, Lomazice, Chotěnice, Běšice and Dolany. Remains of the Žabokliky–Březno railway, in service from 1873 to 1879, can still be seen near the dam.

The name Nechranice comes from an older village that was flooded during construction and now rests beneath the water surface. Along the shores, walking paths and fishing spots draw locals who come on weekends to relax and enjoy time near the water.

Access to the shores is possible from several paths that connect to parking areas nearby, with some sections easier to walk than others. Visitors who plan to fish should check current rules and allowed zones before heading to the water.

In 2015, low water levels exposed 48 medieval graves from the 12th century on the shore at Poláky; archaeologists believe up to 200 more graves and the remains of a small church may lie there. The reservoir also holds pike caught at up to 135 cm long.