The Blue Peacock Bass (Cichla piquiti), native to the Tocantins-Araguaia river basin of the Amazon system, was introduced into the basin of the Paranaíba River, Paraná River system. Cachoeira Dourada reservoir is one of a series of dams on the Paranaíba River in central Brazil, where this fish has become established. A study of its feeding spectrum, combined with information about its reproduct...

There is an increasing awareness that rivers need more room in order to safeguard flood safety under climate change conditions. Contemporary river management is creating room in the floodplains and allowing, within certain bounds, natural processes of sedimentation and erosion. One of the aims is to restore dynamic conditions, so as to get a sustainable and more diverse river ecosystem that can...

Abstract The study explores the factors affecting sedimentation trends in surrounding catchment area of Tarbela Dam for period 1980–2017, specifically rain and temperature. Furthermore, this also investigates seasonal effects sediment loads coming into reservoir from 2007 to 2012. statistical techniques were applied estimation climate (rainfall temperature) on inflow its area. results revealed ...

Eutrophication is considered as a serious problem in water reservoirs. Awareness about the eutrophic status of each reservoir could help in providing a better understanding of the problem in a global scale. The present study was conducted to assess temporal and spatial eutrophication index in a water reservoir (Sahand dam) in the northwest of Iran. Physico-chemical parametres that are effective...

Abstract Sediment accumulation is severe in the Lower Yellow River. Improving sediment-transport efficiency an important way to save water resources. In this study, we analyzed at different sediment concentrations and discharge levels using data from 306 non-overbank floods lower reaches of River 1960 2016. When were below 20 kg/m3, 60 greater than 100 clear volumes for transporting above 50 m3...

The observation of peak flows into river or stream system is not straight forward but complex function of hydrology and geology. Accurate suspended sediment prediction in rivers is an integral component of sustainable water resources and environmental systems modeling. Agricultural fields’ fertility decays, rivers capacity decreases and reservoirs are filled due to sedimentation. The observatio...

Synopsis Water quantity and quality are considered to be the main driving forces the reservoir operation. Barra Bonita reservoir, located in the southeast region of Brazil, is chosen as the case study for the application of the proposed methodology. Herein, optimization and artificial intelligence (AI) techniques are applied in the simulation and operation of the reservoir. A fuzzy stochastic d...