Evaluation of flood simulation for zeyzoun dam-break in Syria using hec-ras model

İRVEM A., ÖZBULDU M.

Fresenius Environmental Bulletin, cilt.29, sa.2, ss.1250-1255, 2020 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 2
  • Basım Tarihi: 2020
  • Dergi Adı: Fresenius Environmental Bulletin
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1250-1255
  • Anahtar Kelimeler: Flood simulation, HEC-RAS model, Orontes river, Syria, Zeyzoun dam
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

Dams are the storage structure constructed across the river to store water in the upstream and release it to downstream as and when the demand arises. It is necessary to carry out dam-break analysis to study the behavior of the flood wave generated from the dam-break. It is necessary to prepare the inundation maps as a part of the emergency action plan to evacuate the population during the flood event. In this study, a simulation of the flood event that resulted in the Zeyzoun dam-break in Syria has been conducted using the HEC-RAS software. The simulation results were evaluated by considering flood risk areas, flood lag time, which is an important information for early warnings, and performance of the HEC-RAS model. Simulations were performed using different inlet hydrograph values until accurate results obtained, based on observed streamflow data. When, 286 m3/s inlet flow-rate is used as an input, a relatively better simulation outflow 109 m3/s is obtained in comparison with an observed flow of 143 m3/s. Flood lag time, which is an important information for early warnings, was found to be 50 hours. These observations from the simulation model gave relatively correct results. Also, this study indicates that flood simulation and peak discharge forecasting can be easily performed using the HEC-RAS model.