Drainage Analysis of Mountainous Watersheds in Ras Al Khaimah Emirate, UAE
I. INTRODUCTION The United Arab Emirates (UAE) is devoid of rivers or perennial streams. However, a number of Wadis of different categories as well as valley beds are in existence. Wadis generally dry, but they discharge the runoff to their respective regions only during dry seasons. The runoff generated by rains differs between one Wadi to another due to the characteristics of topography and headwater catchments. For the higher elevations, floods are the result from heavy rainfall where tiny amounts of rain water enters the Wadi bed and results in significant flood discharge. The majority of annual rainfall also reaches the plain and corresponds to a relatively high annual runoff. The average annual runoff of major wadis in U A E is about 120 MCM. In the piedmont regions runningoff and infiltration are evident. Therefore, heavy rainfall may result in runoff even in a moderately permeable area (gravel plain). A significant portion of the year-round rainfall of this region goes into the dune zone. In a region where runoff is almost inexistent, the only water loss is through evaporate. The water loss is directly proportional with the number of days that rain falls and the depth of the rain. For more detail please visit>>> https://dineshyadav.com https://www.agenceweb.pro https://stylebeauty.info/ https://fashionbuddy.org/ https://fashion24.info/ https://fashionbuzz.org/ Morphological parameters are the primary factors that determine the surface runoff generation, surface water yield as well as floods, and groundwater recharge. Therefore these parameters are necessary to determine and study the recharge and flooding aspects of the basins. Surface water assessment is also crucial for water management. It includes the control of floods, recharge evaluation and the utilization of surface water of a water basin. Drainage analysis is conducted using morphological parameters analysis as well as the use of the rainfall-runoff model. In this study, Ras Al Khaimah area of northern emirates was selected for the analysis of drainage. Fig. 1 presents a location map of the study area. The largest of the wadis Al Bih was considered to be the best option for assessing rainfall-runoff. II. CHARACTERIZATION OF MORPHOLOGICAL PARAMETERS Every design for hydrology is unique due to the variables that affect the design are influenced by location. These are the most significant factors, such as geomorphological parameters, land use of the watershed in addition to the quantity of storage. The morphometric parameters have been used in various studies of the hydrology of surface and subsurface waters, such as sediment yield and flood characteristics. The analysis of watersheds using Morphometrics gives an insight into the topography of the area, geological condition and runoff potential. Morphometric analysis is the measurement of 3 dimensional topography of landforms. It has historically been applied to hills, watersheds, drains, slopes and other kinds of terrain features [23.

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