Performance evaluation of technical aspects of ex-situ rainwater harvesting systems at Wag-Lasta, Northern, Ethiopia

IF 1.4 Q4 WATER RESOURCES Journal of Applied Water Engineering and Research Pub Date : 2021-05-02 DOI:10.1080/23249676.2021.1919572

A. Wale, Messay Abera, Gashaw Beza

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引用次数: 1

Abstract

The most severe constraints for agriculture are water shortages in semi-arid areas of Northern Ethiopia. Rainfall is extremely variable; therefore, it is necessary to harvest rainwater to safeguard improved crop production. The objective of the study is to characterize, identifying problems and evaluating the performance of existing RWH systems in the Wag-Lasta areas. Tweleve RWH ponds were selected from six kebeles in the study area. Primary and secondary data were collected and evaluated using descriptive statistics to assess the technical performance of water harvesting ponds by field observation, direct measurements, and interviews with zone, woreda, kebele experts, and owners. The technical performance assessment showed that the collected runoff and system efficiency were negligible for the total rainwater catchment area. The problems in a portion of the non-functional ponds had found to be poor site selection, lack of maintenance, and standardization of techniques, and some of them were efficient with low performance.

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埃塞俄比亚北部瓦格-拉斯塔迁地雨水收集系统技术方面的性能评价

农业面临的最严重制约因素是埃塞俄比亚北部半干旱地区的缺水。降雨量变化很大；因此，有必要收集雨水以保障作物产量的提高。本研究的目的是对Wag Lasta地区现有RWH系统进行表征、识别问题并评估其性能。从研究区域的六个kebele中选择了Tweleve RWH池塘。通过实地观察、直接测量以及对zone、woreda、kebele专家和业主的访谈，使用描述性统计数据收集和评估主要和次要数据，以评估集水池的技术性能。技术性能评估表明，收集的径流和系统效率在整个雨水汇水面积中可以忽略不计。一些非功能性池塘的问题是选址不当、缺乏维护和技术标准化，其中一些池塘效率高，性能低。

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来源期刊

Journal of Applied Water Engineering and Research WATER RESOURCES-

CiteScore

2.90

自引率

16.70%

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期刊介绍： JAWER’s paradigm-changing (online only) articles provide directly applicable solutions to water engineering problems within the whole hydrosphere (rivers, lakes groundwater, estuaries, coastal and marine waters) covering areas such as: integrated water resources management and catchment hydraulics hydraulic machinery and structures hydraulics applied to water supply, treatment and drainage systems (including outfalls) water quality, security and governance in an engineering context environmental monitoring maritime hydraulics ecohydraulics flood risk modelling and management water related hazards desalination and re-use.