Sources of fine-sediment reservoir deposits from contrasting lithological zones in a medium-sized catchment over the past 60 years

Xu, Mingyang; Wu, Tong; Li, Zhaoran; Liu, Qianjin; Wang, Xiaoli; Wang, Yong; Zheng, Jiangkun; He, Shuqin; Zhao, Peng; Hou, Guirong

doi:10.1016/j.jhydrol.2021.127159

Cited by 11 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the siltation problem is more severe in our study area when compared to the world average annual rate of storage loss due to reservoir sedimentation for large dams, i.e., 0.5-1% (WCD, 2000). However, our findings are in the same order of magnitude as the reservoirs built in densely populated areas like China (Zhang et al, 2021). Our study complements also Kebedew et al 's work on Lake Tana, where the sedimentation rate of the large shallow lake was found similar with the sedimentation rates of the shallow tropical lakes in Yangtze River Basin in China (Xu et al, 2017;Kebedew et al, 2021, Ren et al, 2021.…”

Section: Reservoir Sediment Deposit and Sedimentation Ratesupporting

confidence: 89%

Understanding sedimentation trends to enhance sustainable reservoir management in the Angereb reservoir, Upper Blue Nile Basin, Ethiopia

Tessema,

Zimale,

Kebedew

2024

Front. Water

View full text Add to dashboard Cite

Reservoir sedimentation is a significant issue that shortens reservoir life and impacts operations such as irrigation, hydropower, and drinking water supply because it significantly reduces the reservoir’s initial capacity. Information on changes in the storage capacity is required to reduce the risk of reservoir sustainability. This study was conducted on the Angereb reservoir in the sub-humid region of Ethiopia, in the Upper Blue Nile Basin. Bathymetric surveys and ArcGIS 10.8 were used to estimate the sedimentation and service life of the Angereb reservoir. A Triangulated Irregular Network (TIN) surface was developed from the survey data to estimate the volume of the reservoir. Based on the findings of this bathymetry a total of 2.18 Mm3 of sediment was deposited on the reservoir bed between 2007 to 2022. Storage capacity was decreased by 62.28% in 16 years of operation and caused an average annual volume reduction of 3.9%. The sediment yield (SY) and specific sediment yield (SSY) of the Angereb watershed revealed 192715.5 and 170312.5 m3 year−1 and 3043.2 and 2689.4-ton km−2 y−1 for trap efficiencies of 70.1 and 80% calculated with two methods, respectively. The SSY has increased by about 50.3% to the minimum and 70.1% to the maximum indicating more degradation of the watershed in sixteen years. The gross storage capacity loss of the reservoir was about 75% which was 5.3 Mm3 in 1997 and reduced to 1.32 Mm3 in 2022 with an annual reduction of 2.9% in storage capacity. The reservoir will be filled up by sediment in 7 years if the incoming sediment remains the same in the future. These findings will serve as a call for action in the watershed and a foundation for managing the accumulated sedimentation in the Angereb reservoir and for developing sediment control and management strategies for similar reservoirs.

show abstract

Section: Reservoir Sediment Deposit and Sedimentation Ratesupporting

confidence: 89%

Understanding sedimentation trends to enhance sustainable reservoir management in the Angereb reservoir, Upper Blue Nile Basin, Ethiopia

Tessema,

Zimale,

Kebedew

2024

Front. Water

View full text Add to dashboard Cite

show abstract

“…For instance, micro-depressions in the landscape can collect and retain water differently than surrounding areas, leading to variations in soil moisture and properties [107]. Similarly, sediment deposition in particular spots, often associated with water bodies, can result in unique soil characteristics [108]. Hydrological processes, such as seasonal flooding or changes in groundwater levels, can also influence soil properties in specific locations [109][110][111].…”

Section: General Discussion and Outlookmentioning

confidence: 99%

A Systematic Review on Digital Soil Mapping Approaches in Lowland Areas

Adeniyi,

Bature,

Mearker

2024

Land

View full text Add to dashboard Cite

Digital soil mapping (DSM) around the world is mostly conducted in areas with a certain relief characterized by significant heterogeneities in soil-forming factors. However, lowland areas (e.g., plains, low-relief areas), prevalently used for agricultural purposes, might also show a certain variability in soil characteristics. To assess the spatial distribution of soil properties and classes, accurate soil datasets are a prerequisite to facilitate the effective management of agricultural areas. This systematic review explores the DSM approaches in lowland areas by compiling and analysing published articles from 2008 to mid-2023. A total of 67 relevant articles were identified from Web of Science and Scopus. The study reveals a rising trend in publications, particularly in recent years, indicative of the growing recognition of DSM’s pivotal role in comprehending soil properties in lowland ecosystems. Noteworthy knowledge gaps are identified, emphasizing the need for nuanced exploration of specific environmental variables influencing soil heterogeneity. This review underscores the dominance of agricultural cropland as a focus, reflecting the intricate relationship between soil attributes and agricultural productivity in lowlands. Vegetation-related covariates, relief-related factors, and statistical machine learning models, with random forest at the forefront, emerge prominently. The study concludes by outlining future research directions, highlighting the urgency of understanding the intricacies of lowland soil mapping for improved land management, heightened agricultural productivity, and effective environmental conservation strategies.

show abstract

Soil erosion rates on sloping cropland fragment underlain by contrasting lithologies

Chen

et al. 2023

CATENA

View full text Add to dashboard Cite

Sources of fine-sediment reservoir deposits from contrasting lithological zones in a medium-sized catchment over the past 60 years

Cited by 11 publications

References 47 publications

Understanding sedimentation trends to enhance sustainable reservoir management in the Angereb reservoir, Upper Blue Nile Basin, Ethiopia

Understanding sedimentation trends to enhance sustainable reservoir management in the Angereb reservoir, Upper Blue Nile Basin, Ethiopia

A Systematic Review on Digital Soil Mapping Approaches in Lowland Areas

Soil erosion rates on sloping cropland fragment underlain by contrasting lithologies

Contact Info

Product

Resources

About