NDLI: Groundwater exploitation and recharge rate estimation of a quaternary sand aquifer in Dar-es-Salaam area, Tanzania

Content Provider	Springer Nature Link
Author	Mjemah, Ibrahimu Chikira Camp, Marc Martens, Kristine Walraevens, Kristine
Copyright Year	2010
Abstract	Dar-es-Salaam City gets water supply from surface water and groundwater. The groundwater is used to supplement surface water supply and has increasingly become a major source of water supply in the city. The study area comprises three major parts: the central coastal plain with quaternary fluvial–deltaic sediments, the deltaic Mio-Pliocene clay-bound sands and gravels in the northwest and southeast and the Lower Miocene fluviatile sandstones of Pugu Hills in the west of the study area. The main objective of this study was to quantify the integrated water balance. The major source of renewable groundwater in the aquifer is rainfall. Hence, the average recharge of 256.2 mm/year (for the year 2006) to the aquifer was estimated using the balance method of Thornthwaite and Mather, which is equal to 99.4 hm$^{3}$/year for the whole alluvial aquifer. This value was balanced with total groundwater abstraction of 8.59 hm$^{3}$/year, baseflow to rivers of 75.7 hm$^{3}$/year and discharge into the sea (15.11 hm$^{3}$/year).
Starting Page	559
Ending Page	569
Page Count	11
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	63
Issue Number	3
e-ISSN	18666299
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-09-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dar-es-Salaam Quaternary aquifer Groundwater exploitation Groundwater recharge River discharge Geology
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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