Abstracts and References


Flood inundation mapping by GIS and a hydraulic model (hec ras): a case study of Akarcay Bolvadin subbasin, in Turkey
Yilmaz İcaga, Emin Tas, Murat Kilit


In this study, it is aimed to constitute flood inundation maps for Akarcay Bolvadin Subbasin. Topographic data of study area is defined for hydraulic model by sectioning along the river on Digital Elevation Model (DEM) which is created by ArcGIS, a Geographical Information System (GIS) software. It is used HEC RAS software as hydraulic model. Data migration between ArcGIS and HEC RAS is provided by using an intermediate module, HEC GeoRAS. After required geometrical and hydraulic structure data are constituted, flood inundation maps are obtained by inputting flow data into the model. Flow data is calculated by Fuller Method for various recurrence intervals. In consequence of hydraulic modelling, flood depth and velocity values are also acquired. The areas at flooding risk are determined by taking account of flood inundation, depth and velocity data. And it is given several suggestions for take due precautions in these areas.

Keywords: Flood inundation, GIS, HEC RAS, Hydraulic Modelling, Fuller Method.

  Acta Geobalcanica, Volume 2, Issue 2, pp.111-118, 2016

  DOI: http://dx.doi.org/10.18509/AGB.2016.12

  Available Online First: 26 July 2016


[1] Hasan Ozdemir. Flood risk analysis for different scenarios: A case study of Havran Creek (Balikesir), Association of Turkish Consulting Engineers And Architects Disaster Symposium, Turkey, pp 155-165, 2007.

[2] http://www.mgm.gov.tr/arastirma/dogal-afetler.aspx?s=taskinlar, Date Accessed: 12.12.2015.

[3] Halil Ibrahim Burgan. Flood modelling of Akarcay basin, MSc Thesis, Afyon Kocatepe University, Turkey, 2013.

[4] http://www.preventionweb.net/english/hazards/statistics/?hid=62, Date Accessed: 12.12.2015.

[5] J-M. Scheuren & O. le Polain deWaroux & R. Below & D. Guha-Sapir & S. Ponserre. Annual disaster statistical review: the numbers and trends 2007, Centre for Research on the Epidemiology of Disasters (CRED), Belgium, 2008.

[6] https://tr.wikipedia.org/wiki/Akarçay_Havzası, Date Accessed: 12.12.2015.

[7] H. M. Raghunath. Hydrology: Principles, Analysis and Design, New Age International Publishers, India, pp 214, 2006.

[8] USACE Hydrological Engineering Center. HEC-RAS 4.1 Reference Manual. Approved Public Release, USA, 2010.