Effect of water harvesting techniques on hydrological processes and sediment yield in Northern Ethiopia

Grum, Berhane

doi:10.18174/412142

Cited by 4 publications

(6 citation statements)

References 154 publications

(410 reference statements)

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“…This suggests that the surface runoff collected and sorted during the rainy season continues to be available for infiltration at the beginning of the dry season when the droughts are more likely to start. These findings are consistent with previous studies, which found that RWH ponds improve water availability during drought events [27,45]. The reduction in the agricultural drought severity may also be linked to an improved soil structure.…”

Section: Effect Rwh Ponds On Drought Severitysupporting

confidence: 93%

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Model-Based Assessment of Preventive Drought Management Measures’ Effect on Droughts Severity

Paez-Trujillo

Corzo

Maskey

et al. 2023

Water

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Preventive Drought Management Measures (PDMMs) aim to reduce the chance of droughts and minimize drought-associated damages. Selecting PDMMs is not a trivial task, and it can be asserted that actual contributions to drought alleviation still need to be adequately researched. This study evaluates the effects of three potential PDMMs, namely, rainwater harvesting ponds, forest conservation, and check dams, on agricultural and hydrological drought severity. The Soil Water Assessment Tool is used for hydrological modeling and representing PDMMs. The threshold level method is applied to analyze droughts and evaluate the impact of PDMMs on drought severity. Findings show that rainwater harvesting ponds applied on agricultural land reduce the severity of agricultural droughts and hydrological droughts, particularly during the first months of the drought events observed in the rainy season. Results also reveal that forest conservation contributes to reducing the severity of hydrological droughts by up to 90%. Finally, check dams and ponds in upstream subbasins considerably reduce agricultural and hydrological drought severity in the areas where the structures are applied; however, they exacerbate drought severity downstream. The analysis was developed in the Torola River Basin (El Salvador) for the period spanning 2004 to 2018.

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Section: Effect Rwh Ponds On Drought Severitysupporting

confidence: 93%

“…Compared to 2005 and 2008, in 2015, 2016, and 2017, the volume of water collected in the ponds declined by 45% on average. Our findings align with previous studies that concluded that the performance of RWH ponds highly depends on rainfall availability [27,47].…”

Section: Effect Rwh Ponds On Drought Severitysupporting

confidence: 93%

Model-Based Assessment of Preventive Drought Management Measures’ Effect on Droughts Severity

Paez-Trujillo

Corzo

Maskey

et al. 2023

Water

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Section: Discussionmentioning

confidence: 99%

“…Xia et al (2014) came to a similar conclusion, finding a substantial reduction in runoff, phosphorus, and nitrogen losses. According to Woldegiorgis (2017), effectiveness of tied ridging to decrease soil erosion was predominantly connected to decrease in runoff in tied ridge fields. From this research, in biochar and no-biochar fields, we found soil temperatures on ridges of TR were significantly higher than on OR, which was significantly higher than on FP during alfalfa cultivation period.…”

Section: Discussionmentioning

confidence: 99%

Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China

Mak‐Mensah

Sam

Kaito

et al. 2021

PeerJ

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Background Loss of organic matter and mineral nutrients to soil erosion in rain-fed agriculture is a serious problem globally, especially in China’s Loess Plateau. As a result, increasing rainwater usage efficiency by tied-ridge-furrow rainwater harvesting with biochar is expected to improve agricultural productivity. Nonetheless, with limited knowledge on tied-ridge-furrow rainwater harvesting with biochar, small-scale farmers face the challenge of adoption, thus, the rationale for this study. Materials and methods A field experiment was conducted to determine the influence of open-ridging (OR) and tied-ridging (TR) with bio-degradable film on ridges and biochar in furrows on runoff, sediment losses, soil moisture, fodder yield, and water use efficiency (WUE) on sloped land, using flat planting (FP) without ridges and furrows as control, during alfalfa-growing year (2020). Results Runoff in flat planting (30%), open ridging (45%), and tied ridging (52%) were decreased with biochar to the extent where sediment was decreased in flat planting (33%), open ridging (43%), and tied ridging (44%) as well. The mean runoff efficiency was lower in flat planting (31%), open ridging (45%), and tied ridging (50%) in biochar plots compared to no-biochar plots. In biochar and no-biochar plots, soil temperature on ridges of TR was higher than that on OR, which was higher than FP during alfalfa growing season. Soil temperature in furrows during alfalfa growing season in biochar and no-biochar plots were in the order FP > OR > TR. Mean soil water storage for FP, OR, and TR, in biochar plots was higher than in no-biochar plots. This indicates biochar has a beneficial impact on open riding. Total annual net fodder yield (NFY) was significantly (p = 0.00) higher in treatments in the order TR > OR > FP. Tied ridging had a significant effect on actual fodder yield (AFY) in biochar plots, while open ridging significantly affected AFY in no-biochar plots. Annual total mean NFY and AFY increased by 8% and 11% in biochar plots compared to no-biochar plots. In biochar and no-biochar plots, water use efficiency was in the order TR > OR > FP. Conclusively, water use efficiency was significantly higher (p = 0.01) in biochar plots compared to no-biochar plots. Conclusion When crop production is threatened by soil erosion and drought, mulched tied-ridge with biochar is beneficial to crop growth in rain-fed agriculture, according to this research. Smallholder farmers should be trained on applying this technique for water-saving to mitigate runoff, soil erosion, sediment losses, and improve food security in semiarid areas.

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“…13), which may be responsible for a higher runoff in this zone, while the terrain comes under the lower slope category (dark green color in Fig. 13) and may be responsible for higher water logging in this area (Woldegiorgis, 2017), (Ammar et al, 2016).…”

Section: 𝑷 = 𝑰𝒂 + 𝑰𝒄 + 𝑸mentioning

confidence: 99%

Development of Suitable Water Harvesting Site Modelling and Suggest Corresponding Structure in Pastoral Community to Alleviate Water Scarcity: in Harorais Catchment, Somali Region, Jigjiga, Ethiopia

Walie,

Abebe,

Woldie

2023

Preprint

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The present study aims to identify suitable zones for water harvesting structures in Harorais Catchment by using a Geographic Information System (GIS) and Multi Criteria Evaluation (MCE). Multi-criteria evaluation is carried out in the Geographic Information system to help the decision-makers in determining suitable areas for water harvesting structures. Different layers that were taken into account for multi-criteria evaluation were; soil texture, slope, mean annual rainfall (2008–2019), land use/cover, mean annual runoff, infiltration rate, elevation, and evapotranspiration. A weighted overlay analysis (AHP) analytical method is applied to obtain a layer showing suitable areas for rainwater harvesting structures by rank. Hence, the Catchment is categorized as less suitable, moderately suitable, optimally suitable, and highly suitable. Accordingly, it was found that a small portion of about 0.36Km2 (1.41%) of the basin was highly suitable, 14.68Km2 (56.53%) moderately suitable, 6.93 Km2 (26.69%) optimally suitable and 3.99Km2 (15.37%) is less suitable from water harvesting suitability map. The suitable areas’ layer is integrated further with other structural considerations layers to determine spatial positioning for each rainwater harvesting structure. Finally, 8, 16, 20, and 21 locations in the entire Catchment are suitable and proposed for check dams, percolation tanks, farm ponds, and storage tanks respectively.

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Effect of water harvesting techniques on hydrological processes and sediment yield in Northern Ethiopia

Cited by 4 publications

References 154 publications

Model-Based Assessment of Preventive Drought Management Measures’ Effect on Droughts Severity

Model-Based Assessment of Preventive Drought Management Measures’ Effect on Droughts Severity

Influence of tied-ridge with biochar amendment on runoff, sediment losses, and alfalfa yield in northwestern China

Development of Suitable Water Harvesting Site Modelling and Suggest Corresponding Structure in Pastoral Community to Alleviate Water Scarcity: in Harorais Catchment, Somali Region, Jigjiga, Ethiopia

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