This bachelor´s thesis sets out the basic characteristics of the catchment area and the stream called Sedličiansky potok, located in the Považský Inovec geomorphological unit, in the cadastral area of Sedličná and flows trough the village of Trenčianske Stankovce. This study further analyzes the flow capacity of the bridge on the above-mentioned watercourse, stationed at 6,82 km from the river mouth to a Turniansky potok. The bridge´s flow structure is made of pre-cast concrete with an internal dimension of wide = 200 cm and a height = 150 cm. The flow capacity of the bridge was calculated with a reserve to Qk = 5,66 m3. s-1, what is smaller flow how QN = Q10 , and corresponds flow QN8.