Groundwater Recharge Estimation Using    Soil Moisture Balance and Chloride Mass   Balance   Methods on Upper Bashilo River      Catchment, South Wollo Zone, North Central Ethiopia.

Tarekegn Aragie

dc.contributor.author	Tarekegn Aragie
dc.date.accessioned	2023-06-30T09:25:56Z
dc.date.available	2023-06-30T09:25:56Z
dc.date.issued	2022-08
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/15425
dc.description.abstract	Groundwater recharge estimation is the critical importance for groundwater resources evaluation and management. In the study area, there is lack of understanding the groundwater recharge amount, rate, mechanism and spatial variability. Because the area has not been studied previously in terms of groundwater recharge. The main objective of this study was to estimate the groundwater recharge of the catchment. To estimate the groundwater recharge, DEM, rainfall sample, and groundwater sample data were collected. A set of hydro-meteorological data for the period of 2004 to 2019 years and physical characteristics of the catchment such as land use/land cover, and soil type data were collected from different sources. There are several methods for estimating groundwater recharge. Among these, soil moisture balance (SMB) and chloride mass balance (CMB) methods are used in this study. Using the long-term mean monthly precipitation data, the mean annual rainfall of the catchment was calculated at 1340 mm/year. Potential evapotranspiration (PET), actual evapotranspiration (AET) and runoff were found to be 1097.6 mm/y, 721mm/y and 402mm/y, respectively. The groundwater recharge rate for the catchment using soil moisture balance is 217 mm/y which represents 16.3% of the mean annual rainfall of the catchment while using chloride mass balance has given 240mm/y which accounts for 18.1% of the mean annual rainfall. The results show that the recharge amount estimated by the two methods are compariable with the average value of 228.5 mm/y.	en_US
dc.language.iso	en	en_US
dc.subject	Hydrogeology	en_US
dc.title	Groundwater Recharge Estimation Using Soil Moisture Balance and Chloride Mass Balance Methods on Upper Bashilo River Catchment, South Wollo Zone, North Central Ethiopia.	en_US
dc.type	Thesis	en_US