Improving the Discharge Capacity of the Al Butera River

Abstract

In the province of Maysan, the Al Butera River is one of the most significant tributaries of the Tigris River. It has a length of 48.8 km and reaches the Central Marshes in the south of Maysan from downstream of Al Butera Regulator. Villages and farmland suffer significant. The purpose of this project is to examine and enhance the Al Butera River, which has suffered harm from sedimentation and bank encroachment, particularly during the flooding in April 2019.. Using the available cross-sections and hydraulic data from numerous Ministry of Water Resources. Iraq sectors, a one-dimensional hydraulic model simulating the flow in the Al Butera River was created using the HEC-RAS 5.0.7 software. The fieldwork was conducted to fill in any gaps in the data that were there regarding the river. Fieldwork includes doing an inspection and measuring outflow. Using calibration and verification with a low root mean square error, the simulation demonstrated that Manning’s coefficient is 0.026. Additionally, the Al Butera River has a current capacity of 170 m3/s with the current flood escapes, while its developed capacity for short-term development by raising the banks level is 250 m3/s. However, the river’s long-term development through cross-section alteration with bank-level maintenance is 400 m3/s and does not allow for flood escape. Because there are pavements and populated areas nearby, raising the banks of the Al Butera River by around 2 m would be necessary to develop it to handle the design discharge of 700 m3/s.