During 1997-2007 we studied distribution and dynamics of main radionuclides and their biological significance in lake ecosystems within the 10-km inner exclusion zone around the destroyed unit of the Chernobyl nuclear power plant. The main objects of our studies were bottom sediments, water, seston, and different species of hydrobionts from Azbuchin Lake, Dalekoye-1 Lake and Glubokoye Lake. Sel...

Ethiopia began constructing the Grand Ethiopian Renaissance Dam (GERD) in 2011 on Blue Nile near borders of Sudan for electricity production. The dam was constructed as a roller-compacted concrete (RCC) gravity-type dam, comprising two power stations, three spillways, and Saddle Dam. main is expected to be 145 m high 1780 long. After filling estimated volume water bounded about 74 billion m3. f...

Large dams and reservoirs alter not only the natural flow regimes of streams rivers but also their flooding cycles flood magnitudes. Although effect has been reported for some vulnerable locations, understanding inner-basin variation with respect to effects remains limited. In this study, we analyse Three Gorges Dam (TGD) built on Changjiang mainstream (Yangtze River) investigate dam variations...

with the aim of identifying the rotifera fauna of kepektas dam lake, samples were collectedmonthly between january-december 2005. in total 11 rotifer species were identified. as a species-wisepercentage, kellicttia longispina had the highest level with 57%. when the annual abundance of species wastaken into consideration polyarthra vulgaris, colurella uncinata, asplanchna priodonta and keratell...

S. Makarem, A.R. Fakhari* and A.A. Mohammadi* Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran Department of Chemistry, Faculty of Sciences, Shahid Beheshti University, G. C., P.O. Box: 193964716, Evin, Tehran, I. R. Iran. Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P.O. Box: 14335-186, Tehran, I.R. Iran (Received 29 April 2015, Accepted 22 Ju...

We examine how historic flooding in 2011 affected the geomorphic adjustments created by dam regulation along the approximately 120 km free flowing reach of the Upper Missouri River bounded upstream by the Garrison Dam (1953) and downstream by Lake Oahe Reservoir (1959) near the City of Bismarck, ND, USA. The largest flood since dam regulation occurred in 2011. Flood releases from the Garrison D...