Geomorphic and environmental effects of instream gravel mining
— Semantic Scholar extracted view of "Geomorphic and environmental effects of instream gravel mining" by G. Kondolf. ... Channelization, levee construction, and gravel mining are land management practices that are used for flood control. However, they often alter the balance between sediment supply and available … Expand. 1. PDF. 1 Excerpt; …
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Environmental planning in regulation and management of instream gravel
— A detailed spatiotemporal analysis of comparable units revealed a 50% reduction in the active section and a 20% increase in stable areas, compared to the conditions observed prior to gravel mining. Instream mining was first observed in 1976 aerial photograph covering already up to 50% of the 1956 riverbed area.
Impacts of riverine sand mining on freshwater ecosystems: …
Of the studies reporting the type of mining, most focused on instream mining. Eight focused on the impacts of dry mining (removal of material from an exposed area above the water table, such as on a floodplain), with only two addressing bar skimming (removal of sand and gravel from the surface of exposed river bars).
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— Many cases of river sand and gravel mining induced bridge failure, headcut migration, and bank erosion have been reported in Arizona by different researchers and/or organisations (Bull and Scott 1974).In river systems, bed load transport of sediments have been adversely affected by human interventions in the river basin like reservoir …
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Sediment deficit in rivers caused by dams and instream gravel mining…
PDF | On Jan 1, 2003, Ramón J. Batalla Villanueva published Sediment deficit in rivers caused by dams and instream gravel mining. A review with examples from NE Spain | Find, read and cite all ...
Instream Management
The following operating standards regulate the location, depth, frequency, timing and manner of instream mining to achieve the instream management program objectives set forth in Section 7.5: Instream aggregate extraction will occur through the process of gravel bar skimming and shall be limited to the downstream portion of each gravel bar as ...
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Assessment of Causes and Impacts of Sand Mining on River …
— 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 saline …
The reclamation concept in regulation of gravel mining in …
Abstract Mining of gravel for construction aggregate in California is regulated under the concept of 'reclamation', borrowed from open‐pit coal mines, which are recontoured and returned to productive use (such as agriculture) after mine closure. The concept works for dry terrace pits and can be adapted to creation of wildlife habitat in wet terrace pits. …
Assessing the impacts of river bed mining on aquatic …
— Instream mining refers to the removal of sand and gravel from a river's active channel. Sand from in-stream (in-channel) sources typically needs less processing than sand from other sources. ... The appropriate sand mining management rules have been prepared in respect of the reality for the entire nation. In 2020, the estimated worldwide …
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Morphological evolution of the Maipo River in central …
— Instream gravel mining is one of the most important causes of channel degradation in South America, specifically in rivers located near large metropolitan areas with rapidly growing cities, where ...
Impacts of riverine sand mining on freshwater ecosystems: A …
Increasingly, there are media reports about the negative environmental and social impacts of sand mining, and as calls grow for stronger regulation of mining (Schandl et al., …
Geomorphic and environmental effects of instream gravel mining
— Instream gravel mining involves the mechanical removal of gravel and sand directly from the active channel of rivers and streams. Active channel deposits are desirable as construction aggregate because they are typically durable (weak materials having been eliminated in river transport), well-sorted, and frequently located near markets or on …
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River Sand Mining and its Management: A Global Challenge
In terms of hydraulic consequence, mining induced channel flow changes the threshold limit of hydraulic variables of flow and sediment regime (Rinaldi et al. 2005; Barman et al. …
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Environmental planning in regulation and management of instream gravel
DOI: 10.1016/0169-2046(94)90027-2 Corpus ID: 83955539; Environmental planning in regulation and management of instream gravel mining in California @article{Kondolf1994EnvironmentalPI, title={Environmental planning in regulation and management of instream gravel mining in California}, author={George Mathias Kondolf}, …
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Morphological evolution of the Maipo River in central Chile: …
— Instream gravel mining is one of the most detrimental activities in the evolution of the river morphology and has significant consequences over spatial and time scales, from tens of years Petit et al., 1996, Rinaldi et al., 2005, Arnaud et al., 2015 to hundreds of years Surian and Rinaldi, 2003, Comiti et al., 2011, WyŻga et al., 2016.Effects of gravel mining …
[PDF] PROFILE: Hungry Water: Effects of Dams and Gravel Mining …
— Management of sand and gravel in rivers must be done on a regional basis, restoring the continuity of sediment transport where possible and encouraging alternatives to river-derived aggregate sources. / Rivers transport sediment from eroding uplands to depositional areas near sea level. If the continuity of sediment transport is interrupted by …
Hungry Water: Effects of Dams and Gravel Mining on River Channels
— Management of Instream Gravel Mining. Instream mining has long been prohibited in the. United Kingdom, Germany, France, the Netherlands, and Switzerland, and it is being reduced or prohibited.