Ostrovatske Lake is a lake of karst origin, near the village of Velyki Telkovychi, in the basin of the Styr River. Length 2 km, average width 0.5 km, area 0.87 sq. Km, average depth 4 m. Basin of irregular horseshoe shape. The shores are sandy, overgrown with forest. It feeds on spring waters and atmospheric sediments. It freezes in winter. The water is clear, pure. The bottom is sandy, sloping. From fish pike, perch, crucian are found. On the shores - nesting cranes, storks, wild ducks. Overnight stays in tents are organized on this lake.

Address: 34311, Volodymyrets district, village Great Telkovichi