INTEGRATION BETWEEN THE HYDROGEOLOGICAL MODELING AND MORPHOMETRIC ANALYSES USING HEC-HMS AND GIS TECHNIQUES: A CASE STUDY OF ATBARA RIVER BASINA. Hamdan1 and M. ElrawyAbstract Atbara River is the last tributary and one of the three main rivers flow their water into the main Nile River. The aim of the present work is to provide new scope for integration between the hydrogeological modeling and morphometric analyses using HEC-HMS and GIS techniques. In Atbara River basin that has in sufficient hydrogeological and morphometrical data for simulating rainfall-runoff events, using hydrogeological modeling of the watershed is appropriate. The hydrogeological HEC-HMS model simulates runoff at the present precipitation rate 15, 30, and 50 mm. As well as it simulates three scenarios in case of high precipitation rate according to any climate change effects (at 75, 100, and 150 mm). The modeling at precipitation rate 15 mm in 24 hours, the hydrographic curve and modeling results indicate that water volume at Atbara River basin is 868.9 X 1000 m3 with peak discharge with water volume rate is 1.10 m3/sec. The modeling at precipitation rate equal 30, 50, 75, 100, and 150 mm, the modeling results indicate that water volume are 391.64 X 106, 1.663 X 109, 4.22 X 109, 7.54 X 109, and 15.58 X 109 m3 with peak discharge with water volume rate are 475.9, 2023.3, 5228, 9809.4, and 22399.3 m3/sec respectively. |