Abstract

PEROZO YNESTROZA, Miguel Ángel  and  MARRERO DE LEON, Norberto V. Hydrological impact assessment due to reservoir dam "El Isiro" outbreak in residential and agricultural areas located in the floodplain of the river Coro. Rev Cie Téc Agr [online]. 2011, vol.20, n.4, pp.25-30. ISSN 2071-0054.

Hydrologic studies in Coro river´s basin haven´t taken into account spillway´s overflow neither reservoir dam "El Isiro" collapse. This reservoir, located at Coro river's basin, serves as a source for supplying drinking water to Coro city in Venezuela. Downstream of this dam is the river's floodplain, which has been under an urbanization process. Also currently, there is a developing agricultural project to exploit plain's advantages in that sense. Therefore, this work is held to incorporate the sub-basin that drains into the reservoir "El Isiro" and to take into account the possibility of dam breaking by using software HEC-HMS and HEC-GEOHMS, which allow the use of Geographic Information Systems (GIS) to optimize the formulation of the basin‘s conceptual model. According to the results, a high impact in residential and agricultural areas (in terms of peak flows and runoff volumes) by considering reservoir dam "El Isiro" breaking can be appreciated. This paper represents a valuable contribution to flood risk management in the study area.

Keywords : Flood; dam; break; HEC-HMS; HEC-GeoHMS.

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