Runoff Estimation For Algadeer Alabyad Watershed In Jordan Using Rational Method And Geographic Information System
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 2
Abstract
Jordan is characterized by severe weather conditions, therefore great temporal and spatial variations in rainfall, runoff and evaporation amounts are expected .This research aims to use GIS for investigating the potential of runoff for Algadeer alabyad watershed using the “Rational equation”.The annual runoff volume for each catchment area was estimated based on using simple equation that takes into consideration the sub-watershed area, annual rainfall and annual runoff coefficient. The Rational Formula was applied as the most commonly used method of determining runoff volume for medium to large watersheds. The runoff coefficient is the key parameter in this model. It was found that the estimated annual runoff that could be utilized for water harvesting on annual basis at sub-watershed 1 is 244359 m3 , at sub-watershed 2 is 374925 m3 , at sub-watershed 3 is 148807 m3 and at sub-watershed 4 is 46700 m 3 .The total annual runoff volume that could be collected in the earth dam location on the average long term rainfall depth is 768091 m3 to provide a source of water for irrigation and for the benefit of local community and livestock owners. The runoff percentage is estimated to be 3.9 % of the annual rainfall over the total area of Algadeer alabyad watershed.
Authors and Affiliations
Safa Mazahreh, Doaa Abu Hamoor, Lubna Al Mahasneh
Keywords
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- EP ID EP393715
- DOI 10.9790/9622-0802020110.
- Views 123
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