GROUNDWATER RECHARGE EASTIMATION OF FETAM CATCHMENT IN UPPER BLUE NILE SUB BASIN, ETHIOPIA:

MEKONEN GEDEWON

dc.contributor.author	MEKONEN GEDEWON
dc.date.accessioned	2021-02-24T08:32:58Z
dc.date.available	2021-02-24T08:32:58Z
dc.date.issued	2021-02-24
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/11947
dc.description.abstract	Groundwater recharge estimation has been carried out in the Fetam catchment of the upper Blue Nile basin, Ethiopia. Fetam river is one of the major tributary of Blue Nile river Basin. In this catchment surface water is subject to high seasonal variation due to this groundwater is primary option for drinking water supply to the community. However, amount of groundwater recharge within the area have not investigated. This research has been conducted with objective of estimating the groundwater recharge of the catchment using chloride mass balance, Water table fluctuation (WTF),soil moisture balance (SMB), Baseflow separation and Water budget methods. Except chloride mass balance and water level fluctuation all the methods were applied by using secondary data from west Amahara meteorological agency for soil moisture and water budget and from Abay drainage authority for baseflow. The SMB method is applied with different time scales (monthly and daily basis).The major geologic units in Fetam catchment includes: Sandston, tertiary lowerbasalt, tertiary upper basalt, old quaternary volcanices, young quaternary volcanices, and quaternary alluvial and eluvial deposits. Based on hydraulic properties these geologic formations grouped into five major aquifer classes: highly productive (fractured and porous aquifer), moderately productive (fractured and porous aquifer) and low productive fractured aquifer. The recharge rate by the five methods are; 170.5, 112.3, 244.9, 238.2, 218.3 and 165, mm per year using daily soil moisture balance, monthly soil moisture balance, baseflow separation, water table fluctuation, chloride mass balance and water balance, respectively. Recharge rate should be conducted by using other recharge estimation methods Keywords: Groundwater recharge, Baseflow separation, Chloride mass balance, Soil Moi	en_US
dc.language.iso	en	en_US
dc.subject	hydrogeology	en_US
dc.title	GROUNDWATER RECHARGE EASTIMATION OF FETAM CATCHMENT IN UPPER BLUE NILE SUB BASIN, ETHIOPIA:	en_US
dc.type	Thesis	en_US