干旱区生态环境知识资源中心(Arid): Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya

Arid

DOI	10.3389/fenvs.2020.00095
	Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya
	Wekesa, Sospeter Simiyu; Stigter, Tibor Yvan; Olang, Luke O.; Oloo, Francis; Fouchy, Kelly; McClain, Michael E.
通讯作者	Wekesa, SS
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2020
卷号	8
英文摘要	Alluvial corridors of ephemeral river systems provide viable opportunities for natural water storage in dry lands. Whilst alluvial corridors are widely recognized as water buffers, particularly for areas experiencing constant water scarcity, little research has been undertaken in Sub-Saharan Africa to explore their hydrological variability and water resource potential as alternative water sources for nearby communities. This study investigated the water flow behavior and storage potential of an ephemeral river system in the Mara Basin of Kenya for purposes of supporting water resources development and ecological sustainability. The water flow processes - including the recharge rates and water loss processes - from existing sand storage systems were established through monitoring of ground and surface water levels. Water samples along the alluvial corridor were collected and analyzed for major ions and isotopic signatures required to establish the water storage dynamics. The storage potential was estimated through Probing and Electrical Resistivity Tomography techniques, augmented with in-situ measurements of hydraulic conductivities and channel bed porosities. The mean annual storage volume in the alluvium of the study reach was estimated at 1.1 Mm(3), potentially capable of providing for the annual domestic and livestock water demands of the area. Transmission losses into the alluvium beneath the ephemeral channel-bed were noted to attenuate the flood peak discharges, depending on the level of saturation of the alluvial bed. However, water storage in the alluvium was subject to losses through evapotranspiration and seepage through fractured bedrocks. The study demonstrated the potential of alluvial corridors as water storage buffers providing alternative water sources to communities within the dry land regions with water scarcity, thereby to supporting ecosystem sustainability.
英文关键词	alluvial corridors ephemeral river systems water storage potential water flow processes Mara River Basin Kenya
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000554013900001
WOS关键词	TRANSMISSION LOSSES ; CHANNEL RECHARGE ; STREAM ; INFILTRATION ; DYNAMICS ; MODEL ; LAND ; CONSERVATION ; MANAGEMENT ; HYDROLOGY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325301
作者单位	[Wekesa, Sospeter Simiyu; Stigter, Tibor Yvan; Fouchy, Kelly; McClain, Michael E.] IHE Delft Inst Water Educ, Dept Water Resources & Ecosyst, Delft, Netherlands; [Wekesa, Sospeter Simiyu; Olang, Luke O.; Oloo, Francis] Tech Univ Kenya, Ctr Integrated Water Resources Management, Hydrol & Earth Informat Labs, Nairobi, Kenya; [Olang, Luke O.] Tech Univ Kenya, Dept Biosyst & Environm Engn, Nairobi, Kenya; [McClain, Michael E.] Delft Univ Technol, Dept Water Management, Delft, Netherlands
推荐引用方式 GB/T 7714	Wekesa, Sospeter Simiyu,Stigter, Tibor Yvan,Olang, Luke O.,et al. Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya[J],2020,8.
APA	Wekesa, Sospeter Simiyu,Stigter, Tibor Yvan,Olang, Luke O.,Oloo, Francis,Fouchy, Kelly,&McClain, Michael E..(2020).Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya.FRONTIERS IN ENVIRONMENTAL SCIENCE,8.
MLA	Wekesa, Sospeter Simiyu,et al."Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya".FRONTIERS IN ENVIRONMENTAL SCIENCE 8(2020).