Hydraulic Study of Neretva River in Bosnia and Herzegovina (from City of Mostar to border with Republic of Croatia)

Client: JP za “Vodno područje slivova Jadranskog mora” Mostar
Completion year: 2006

The study of Neretva river project main purpose is a creation of mathematical model which will be used for analysing possibilities of establishing a flood forecast system as well as simulation and presentation of flood waves using mapping technology.

The basis of this system represents a mathematical model MIKE 11 used for creation of the Neretva river model from hydroelectric power plant “HE Mostar” until the border with the Republic of Croatia (i.e. till VS Metković) an area of app. 50 km. The model includes 5 tributaries.
For the purpose of this project both geodetic and hydrometric surveys have been conducted as well as detailed hydrological analysis used for conducting hydraulic simulations.
Available time series data came from 14 water monitoring stations, for the period from 1995 to 2006.
Hydraulic simulations were made with MIKE 11, which has a possibility of simulating 1-dimensional flow. Flow simulations of steady and unsteady mode were made. For both type of flows a mathematical model calibration was done, followed by verification, and afterwards simulation of selected water waves.
In a steady mode a flow simulation was done for a case with a protection bank present in the area from VS Počitelj until VS Gabela, and for a case without a protection bank on the river Neretva.
An analysis of flow regime transformation was made with a purpose of evaluation of anthropogenic influence from gravel exploitation.
Based on the obtained steady mode flow simulation results, topographic data and digital maps a flooding map was created by using MIKE GIS.
 
Flood zone maping creates an important step towards flood problems better understanding in urban areas, as well as in the areas of special interest.