BARBADUN RIVER CHANNELING IN MUSKIZ
TECHNICAL ASSISTANCE TO THE DETAILED PROJECT OF THE BARBADUN RIVER CHANNELING IN MUSKIZ
Hydraulic function and drainage capacity improvement of the Barbadun River and the Kotorrio stream
Area of activity
WATER AND ENVIRONMENT
River hydraulics and flooding
- Detailed design project development
The purpose of this work is the definition at the construction project level of the channeling of the Barbadun river in Muskiz. From the bridge in the San Julián neighborhood of access to the A-8 freeway to the bridge of the N-634, in an approximate length of 2,500 meters. Also, the channeling of the Kotorrio stream from its confluence with the Barbadun upstream of the bridge with the N-634, in a length of approximately 1,200 m.
The purpose of this channeling project is to improve the hydraulic function and drainage capacity of the Barbadun river and the Kotorrio stream to prevent damage caused by flooding, also allowing the subsequent implementation of infrastructure and urban development of the land located on its banks.
The Channeling Study will also include the replacement of existing easements, roads, paths, crossings, power and telephone lines affected, as well as the conditioning or replacement of existing bridges on the river that may be modified by the new channeling. In general, all the accessory and complementary works required not only to ensure the main hydraulic function, but also those that affect land use planning and serve to minimize environmental impact.
The section of the Barbadun River to be channeled is close to the mouth at La Arena beach, so the hydraulic calculation must extend to this point, the boundary condition for the calculation of the backwater curves being the sea level.
The channeling of the Barbadun River in Muskiz begins downstream at the bridge in the San Julián neighborhood, which serves as access to the A-8 Highway. Upstream is the access bridge to the San Julián de Muskiz district itself, which, due to its low capacity for flows of the order of those indicated, must be replaced. The entire course of the river runs in the subsection that reaches the confluence with the Kotorrio stream through a relatively wide area without major obstacles, where only a few rocky outcrops can be seen on the left bank as the river approaches the slope.