Koryto řeky Ostravice

Koryto řeky Ostravice is a small but geologically distinctive nature reserve on the Ostravice River, right at the northern edge of the village of Ostravice in the Moravian-Silesian Beskids.

What makes this site special?

Declared a protected geological monument on 13 April 1966, the reserve covers just 0.80 hectares of riverbed, yet it protects something found nowhere else on this scale: a tectonic boundary between the Těšín-Hradiště formation and the Frýdek beds, exposed at the surface. Hard beds of sandstone and conglomerate resist the river's flow, forcing the Ostravice to carve a series of rock sills, rapids and small cascades instead of running in a smooth, even channel.

What will you see there?

The reserve's main draw is the riverbed itself — exposed rock thresholds over which the water tumbles in cascades, producing the steady rush of sound typical of mountain rivers. The banks are lined with sycamore, alder and ash trees, and the steep slopes above the water serve as nesting sites for white-throated dippers, small birds closely tied to fast-flowing streams. Bullhead fish live in the river, while grass snakes and viviparous lizards can be spotted along the banks. This whole micro-habitat fits into less than a hectare, making the reserve one of the smallest yet most densely packed protected areas in the region.

How to get there?

The starting point is Ostravice railway station, from where a blue-marked trail leads north toward the reserve. The protected stretch runs along the river's left bank, close to the bridge over the Ostravice — the easiest landmark to spot when approaching the site. The walk from the station takes only a few minutes at an easy pace.

When to visit?

The reserve is accessible year-round, but water levels are highest — and the rapids most dramatic — in spring after snowmelt or following heavy summer rain. Summer brings a shaded canopy from the riverside forest, autumn adds color from the sycamores and alders, and in winter the rock sills are partly rimmed with ice and frost, giving the site a different but equally worthwhile character — though the icy banks call for extra caution.

Frequently asked questions

Is entry to the reserve free? Yes, the area is open to the public with no fee and no booking required.

Can you walk directly into the riverbed? The site is protected for its geological and ecological value, so it's best to stay on the marked trail and view the rock formations from the bank rather than stepping onto the exposed rock itself.

How long does a visit take? Walking the protected stretch itself takes about 20–30 minutes, but including the approach from the railway station and back, a full visit usually takes around an hour.

Are there other attractions nearby in Ostravice? Yes, the village of Ostravice serves as a gateway to the Moravian-Silesian Beskids and a starting point for hiking trails into the range, making the river reserve a natural, easy-to-reach stop before heading further into the mountains.