sand mining impact on river bank erosion

Overall, studies on assessing people's perceptions of riverbank erosion driven by sand mining were less common compared to those that focused on the …

Here we assess locals' perception of sand mining activities in the VMD and its impacts on riverbank erosion. Residents living along the Bassac River, a hotspot of sand mining, were interviewed. Our results showed that while sand mining is perceived as destructive to the environment, few were aware of its role in worsening riverbank erosion.

The problem of sand mining in the Vietnamese Mekong Delta (VMD). (a) Locations of riverbank erosion and sand mining capacity along the two main rivers of the VMD, with data source of sand mining ...

Abstract. Mining of sand manifold higher than natural replenishments leads to severe damages to river systems. The mining process not only intercepts movement of sediments along the river channels ...

Extensive sand mining in some rivers has lead to the collapse of river banks, destabilising structures such as bridges and causing influx of salt water. Landslides and coastal erosion are other factors that have had a …

The river lower Subansiri exhibit a loads of sediment getting deposited and flooding the flood area leading to massive river bank erosion. The paper explores the impact of land loss due to river ...

The results showed that at the Srandakan Bridge point to the Progo River Estuary the volume of sand mining was 459,576 m ³ /year, one of the social and economic impacts of sand mining was the ...

Findings from the study showed that an estimated value of 156,400 m 3 of sands have been removed from Odor River for the past 40 years. Also, the ecological impacts of mining in Odor River include loss of river bank vegetation, increased turbidity, erosion, river shrinking and lowered riverbed.

Flow alteration through the construction of dams, near bank deforestation, sand mining, artificial channel modification, land use, and land cover change are dominantly discussed as anthropogenic activities for river bank erosion in the era of the "Anthropocene" (Das et al., 2020).

A recent study of Southeast Asia's Mekong River dramatically illustrates the problem: It concludes that sand mining is lowering the Mekong's riverbed, destabilizing its banks and altering the way it flows, threatening communities and wildlife along the nearly 3,000-mile river. "What we found was that the lowering that's going on is ...

The physical effects of river sand mining often have an impact on human health as well. For instance, alterations in the e-flow and water quality could lead to a rise in the prevalence of infectious diseases. ... The effects of extensive sand mining on the river channel River bank erosion, bank slumping, and river channel lowering (Rastogi and ...

Compared to passive sources, extraction of sand and gravels from active sources such as riverbeds has far more socio-economic and environmental impacts. Mining operation in alluvial channels ...

Semantic Scholar extracted view of "Bank erosion under the impacts of hydraulic erosion, river stage change and revetment protection in the Middle Yangtze River" by Yueyao Zhou et al. ... River bank instability from unsustainable sand mining in the lower Mekong River. C. Hackney S. Darby +5 authors R. C. Houseago. …

This study finds that sediment loads are insufficient to replace the sand mined from the Mekong River delta, with mining rates high enough to make river banks unstable.

Rivers are one of the main sources to supply sand and gravel for construction projects. Depending on river morphology and hydraulic characteristics, its sediment transport capacity, and mining operation method, the extraction of river bed materials may affect its ecosystem through bank and bed erosion. To advance the mechanisms of …

The river bank erosion potential map generated through this protocol serves as a foundational tool for decision-making and mitigation efforts and serves disaster prevention in the study area. ... Thi Kim T, Huong NTM, Huy NDQ, Tai PA, Hong S, Quan TM, Phung NK (2020) Assessment of the impact of sand mining on bottom morphology …

Resulting incision of river channels and bank erosion, ... Even though it seems impossible to quantify the detailed impact of sand mining on the local morphological processes, it is indisputable ...

Mining has resulted in soil erosion and sedimentation in river bed and had negatively affected on the irrigation efficiency, thus making floods and landslides common within the areas (UNDP, 2017 ...

Published: 13 January 2020. Sand mining in the Mekong River in Cambodia is increasing the risk of dangerous riverbank callapse. It's a resource used in global construction and mined from rivers and coasts across the world. Now new research, as part of a project led by University of Southampton, has shown sand mining is causing river beds to ...

Satellite images from 1995 and 2013 show the impact of sand mining on the waterway connecting China's Poyang Lake and the Yangtze River. NASA Earth Observatory By removing so much sand, the miners have almost doubled the waterway's capacity, partially draining the lake and making it more vulnerable to drought .

Our results showed that while sand mining is perceived as destructive to the environment, few were aware of its role in worsening riverbank erosion. Only …

The present article aims at:. investigating and assessing the environmental impacts of sand mining from rivers. investigating social problems caused by sand mining from river mines. investigating economic impacts of sand work sites on local communities. Considering these goals the article tries to answer these questions: 1.

A river channel is evolved into different bed form units depending on the changes in flow energy and sediment discharge through the system. Indiscriminate sand mining is one of the most destructive anthropogenic activities (Plate 4.1) hindering the natural stream bed evolution.A better understanding of the general distribution, sources, …

Impacts of sand mining on rivers may be direct or indirect ... Substantial channel incision was generally associated with channel narrowing linked to bank erosion due to over steepening and destabilization of banks (Ortega-Becerril, ... Studies of sand mining in the Amite River, Lousiana, USA (Brown & Daniel, ...

The spatial variation of erosion-accretion mechanism is unequal due to differences in the extent of flood, sedimentation, and channel shifting pattern of a river system. The present study tries to explore the spatial analysis of riverbank erosion and sediment deposition in temporal scale from 1975 to 2017. The study investigated the …

To match demand, the volume of sand extraction often exceeds the rate of natural renewal 5 with serious environmental consequences. The impacts of riverbed sand mining include increased channel ...

image: Mekong River bank collapse. view more Credit: Steve Darby, University of Southampton. It's a resource used in global construction and mined from rivers and coasts across the world.

Excessive sand mining led to riverbed alteration, affecting the course of the river and causing bank erosion. Deepening of the rivers and river mouths leads to …

Sand mining has a number of effects on the river environment. Sand mining disturbs and completely destroys the habitat in mined areas. It causes changes in the river's channel form, physical habitats, and food webs - the river's ecosystem. It also increases the velocity of the flow in the river, which destroys the flow regime and …

studying the impact of climate change on the fluctuation of sediment ... unsustainable sand mining has on river bank erosion." 2/4. Sand Dredging in the Mekong. Credit: Jim Best, University of ...

These activities have given rise to various problems including: river bank erosion, river bed degradation, river buffer zone encroachment and deterioration of river water quality. ... The direct impact of river sand mining can be readily discerned within rivers through changes in the movement of water and sediment, channel geometry, bed ...