Jez Smolkov, weir on the Opava in Smolkov, Czech Republic

Jez Smolkov is a reinforced-concrete weir on the Opava river near the Jezero site by Smolkov, part of Háje ve Slezsku in the Opava district. Its overflow crest, 57 m wide, sits at 225.8 m above sea level; the stilling basin below is 11.5 m long and 0.6 m deep. The Koutské a Zábřežské louky nature reserve begins at the weir on the left bank.

The sources record no construction date or builder for the Smolkov weir on the Opava. It is a reinforced-concrete structure whose overflow crest sits at 225.8 m above sea level, with a 57 m spillway width, an 11.5 m stilling basin and 0.6 m depth. At the weir's left bank the Koutské a Zábřežské louky nature reserve begins.

The weir sits on the Opava river by the Jezera pond near Smolkov, in the Háj ve Slezsku municipality. On the left bank, right at the weir, the Koutské a Zábřežské louky nature reserve begins, so the structure marks a boundary in the landscape that walkers along the field paths can see.

The weir is reached by field paths and is freely accessible all year; there are no bridges or viewing platforms at the structure itself. Boaters cannot shoot the weir and must carry their boats around it. On the left bank of the Opava, the Koutské a Zábřežské louky nature reserve begins right at the weir.

The weir is not passable for boaters: canoes and kayaks must be carried around it. On the left bank of the Opava, the Koutské a Zábřežské louky nature reserve begins right at the weir. The structure is reached only along field paths.