Author(s): Tomasz Kolerski
Linked Author(s): Tomasz Kolerski
Abstract: Training structures are used to prevent erosion and maintain stable channels; however, their impact is also largely evident in ice transport and habitat conditions. Many European rivers were modified in the mid XVIII century to establish stable conditions for navigation and reduce side erosion. River engineering works on the Odra River were initiated in 1745 and were mainly carried out by the construction of closure structures built across secondary channels to reduce floodplain conveyance and increase the main channel depth. This river modification was proceeded until the mid XX century. This mitigation resulted in shortening the Odra length by approximately 20%; however, it does not eliminate winter floods. Flood risk reduction mainly constituted an attenuation of ice jam flooding risk in the area of Lower Odra. Currently, within the Odra-Vistula Flood Management Project (OVFMP) a number of initiatives are planned to prevent ice jam flooding. In the scope of this task, the restoration of spur dikes and construction of new structures such as stepped-up dikes or vanes is being considered. The impact of the proposed structures on ice transport along the boundary section of the Odra River is being investigated by means of applying a previously calibrated mathematical model. The DynaRICE model has been implemented at a location along the Odra River, previously selected as an ice-prone area.