Děhylov weir, Water control structure on Opava River, Czech Republic.

Děhylov weir, also called Jez Dobroslavice, is a reinforced-concrete and stone weir on the Opava River at river kilometre 8.54, beside the Jilešovice-Děhylov natural monument in Dobroslavice. Its spillway is a parabolic slab, with a 2 m wide fish pass on the left bank and safety railings and warning boards on the bank section.

Děhylov weir is a reinforced-concrete and stone structure on the Opava River at river kilometre 8.54, near the Jilešovice-Děhylov natural monument in Dobroslavice. It has a parabolic overflow slab and a 2 m wide fish pass on the left bank of the flow. The sources record no construction date or later modifications.

The weir is known locally by several names: Jez Dobroslavice, Hlučínský Jez and Jez Děhylov. It lies by the Jilešovice-Děhylov natural monument, and a 2 m wide fish pass runs along the left bank of the river.

The weir sits at river kilometre 8.54 on the Opava, beside the Jilešovice-Děhylov natural monument. It cannot be safely passed directly and is highly dangerous for paddlers; only when water conditions are favourable can the 2 m fish pass on the left bank be used. Entering the weir structure is not permitted.

The weir has a parabolic overflow plate and a 2 m wide fish pass on the left bank of the river. Boaters can use the fish pass only when water conditions are favourable; entering the weir itself is forbidden.