Information on soil erosion and sediment yields is very limited in the immediate vicinity of the Three Gorges Project Ž . TGP , although the inceptisols developed on Triassic shales and sandstones in this area are known to be highly susceptible Ž . to erosion. Estimated sediment yields for a small reservoir catchment Yiwanshui in Changshou County, downstream of Ž y2 y1. Chongqing, are high arou...

Microbiology of a hypersaline oil reservoir located in Central Africa was investigated with molecular and culture methods applied to preserved core samples. Here we show that the community structure was partially acquired during sedimentation, as many prokaryotic 16S rRNA gene sequences retrieved from the extracted DNA are phylogenetically related to actual Archaea inhabiting surface evaporitic...

Abstract Reservoir monitoring is important in maintaining water retention and controlling volume changes as well sedimentation rates. usually uses conventional means such recording the pole leveling height at a certain time, using large ships with sounding method determining position depth by utilizing total stations intersection measurements. However, methods require lot of manpower, significa...

The massive growth of potentially toxic cyanobacteria in water supply reservoirs, such as Legedadi Reservoir (Ethiopia), poses a huge burden to purification units and represents serious threat public health. In this study, we evaluated the efficiency flocculants/coagulants chitosan, Moringa oleifera seed (MOS), poly-aluminium chloride (PAC) settling cyanobacterial species present Reservoir. We ...

With ever decreasing potential for suitable new dam sites, sustainable use of existing water reservoirs is paramount importance. In absence appropriate measures, reservoir storage continually reduced due to sedimentation. One option remove sediment deposits hydraulic flushing. During the flushing operation, bottom outlets are open and released. Whether successfully removes depends on a number f...

The operation and longevity of hydropower dams are often negatively impacted by sedimentation. Forest conservation can reduce soil erosion, and therefore efforts to maintain upstream forest cover within a watershed contribute to the economic life span of a hydropower facility. The cost of forest conservation can be viewed as an investment in hydropower and be financed via a payment for ecosyste...

We studied the impacts of Three Gorges Reservoir (TGR) on the sedimentation regimes in the downstream-linked two largest Chinese freshwater lakes, Lake Dongting and Lake Poyang. Our results indicate that up to 1.73 × 109 t sediment was retained in TGR from June 2003 to December 2014. This resulted in a 145.9 × 106 t yr-1 decline in the suspended sediment load at Zhicheng and a 16.8 × 106 t yr-1...