Browsing by Author "Gurmu, Naol"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Groundwater Recharge Estimation for Mullu Catchment in Somale Region, Eastern Ethiopia
    (Addis Ababa University, 2019-05-06) Gurmu, Naol; Azagegn, Tilahun (PhD)
    The increasing demand placed on groundwater has encouraged distinguishing of water resource, which would be the foundation of exploration, management, and conservation. In this study, quantitative estimation of groundwater resources of Mullu catchment has been made. Therefore, the main objective of the study is to estimating the amount of ground water recharge for Mullu Catchment using Water Balance Method. And also, the specific objectives are identifying the recharge area and groundwater flow characterization using water level information. The methodology used to estimating the groundwater recharge for Mullu catchment passes through three different stages; desk study, field work, and post field work. The desk study includes literature search and review and/or collection of available data. The sources of data used in this stage comprise published and unpublished reports, both local and international. The field work includes observing the topography and drainage system, Soil type, Land use/cover, geology and hydrogeology of the study area. After field work, data interpretations coupled with thesis writing have been done. Mullu Catchment is situated at narrow valley that surrounded by quaternary volcanic rocks ridges in which the surface drainage out flows towards Afdem area. The area is drain by seasonal streams originating from south, south east and south west high land areas. The flood from high land area is transporting alluvial sediments comprise silt, sand and gravel to vast central plains. The main aquifer of the area is volcanic rocks under laid the alluvial deposits. Particularly volcanic rocks underlying alluvial deposits are considered to be the most potential aquifers of the area. The Groundwater Recharge for Mullu Catchment has been estimating using Water balance method is 73.41mm/year.