AR
National Authority
for the Litani River
National Authority for the Litani River
Al-Qasimia irrigation project and Aras Al-Ain
This project irrigates about 2,400 hectares of orchards on the southern coast, and depends mainly on the waters of the lower basin of the Litani River, in addition to the Aras Al-Ain ponds. : 7 km - north of Ars Al-Ain 4.5 km - the mountain channel: 9 km)
Channel 800 project
It is a project under implementation that aims to rent about 100 million cubic meters from Lake Qaraoun to irrigate about 15,000 hectares of agricultural land extending between Qalia in the western Bekaa and the town of Barashit in the Bint Jbeil district. It also provides drinking water for the residents of villages located in the vicinity of the canal. The number of villages benefiting from irrigation is from The project provided water for about 77 villages, while the number of villages benefiting from drinking water reached about 99 villages.
Channel 900 project
The project consists of a main intake channel with a total length of 35 km, a main pumping station at the bottom of the Qaraoun Dam, secondary pumping stations on the well networks, a group of distribution tanks and pressurized irrigation networks. The Authority implemented the first part of this project in 1970, covering an area of 2000 hectares of agricultural land to reach 21,500 hectares, with the implementation of all parts of the project in the future, noting that the Authority stopped irrigation work in this project as a result of the pollution of Qaraoun Lake.
DAM break modeling for Qaraoun DAM Volume 1 – Main report

This report considers the modeling of a potential dam break from the Qarauon Dam in the Litani River Basin using an unsteady HEC-RAS model. Topographic data for the Litani River Basin was obtained from contours lines digitized from maps and converted to a 5m x 5m cell-size Digital Elevation Model (DEM) representing the Litani River Basin. The Qaraoun Dam is located at a narrow point at the southern end of Bekaa plain at an elevation of 800m above sea level. The concrete faced rockfill dam has a maximum capacity of 220 million m3.
The Litani River Basin downstream of the Qaraoun Dam is very steep, dropping 800m in approximately 90 km distance to the mouth of the river at the Mediterranean Sea. The river flows through several deep and winding canyon sections interspersed with wide, flat reaches over this interval making the dam break modeling problem challenging as many cross-sections must be used in the model (1-5 m spacing between sections), along with a short time step (5 seconds).

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DAM break modeling for Qaraoun DAM Volume 2 – Maps

DAM BREAK MODELING FOR QARAOUN DAM VOLUME 2 – MAPS

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DAM Instrumentation evaluation and recommendations
The objective of Component 4a of the Litani River Basin Management Support program is to assess risks associated with dam failure and develop monitoring tools that can provide advance indications of potential emergency events. The need for monitoring of the Qaraoun Dam is critical as it is for any large dam whose failure would have dramatic consequences.

In order to identify appropriate monitoring instruments for any dam, the first step is to identify and understand the various ways in which potential failure can take place, the triggering mechanism of each mode of failure, and the probability that such failure modes can actually develop. Instruments that have the ability to measure and monitor the trigger mechanisms are then identified and used for safety monitoring.

Such a process, known as potential failure mode analysis (PFMA), has been conducted in order to define instrumentation that is proposed to efficiently monitor the aging Qaraoun dam. During this PMFA, 13 potential failure modes were identified, analyzed and classified. Instrumentation was identified and selected to improve the monitoring of the high risk potential failure modes. 

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