safety of a dam depends upon not only design and construction but also on the monitoring at the early years after impoundment. shahr- chai dam is located on the shahr- chai river and 12 km away from urmia city in the south- west. the construction of dam was ended in winter 2004, and then both of the dam impoundment and monitoring instrument readings were started, immediately. after ending dam c...

—The flannelmouth sucker Catostomus latipinnis is one of the few native fish that persists in the lower Colorado River basin. Little is known about the effects of hypolimnetic releases of cold, swift water from Colorado River dams on flannelmouth sucker populations. We conducted fatigue velocity tests on age-0 flannelmouth suckers in the laboratory to evaluate the effects of water temperature a...

Abstract Anthropogenic stressors on large rivers have significantly modified riverine sediment transport. However, the impacts of dredging and sand gravel (S&G) mining are poorly monitored. We quantify these lower Arkansas River, USA, where anthropogenic processes well documented. The construction dams caused a 98% reduction in suspended discharge ( Q ss ). Since dam construction, fluvially...

To study the behaviour of silver eels (Anguilla anguilla L.) during their downstream migration, particularly near a hydroelectric power dam, we tagged nine eels with ultrasonic transmitters and tracked their paths in the River Mosel, Germany. The onset of migration coincided with the first flood event that followed the full moon but was independent of daytime, because migration and turbine pass...

Abstract Long-term geomorphic evolution of rivers depends both on the amount sediment supply and river’s ability to transport that sediment. Climate change is anticipated flow frequency distributions yield could thus alter trajectory many regulated rivers. We aim examine possible response upper Godavari River, India, climate using two well-accepted metrics: sediment-transporting flows (T*) rati...

Sediment, suspended matter, river water and ground water samples were collected at twelve sites in the drainage valley of the Nile River, around Sohag (Central Egypt) and close to the Aswan High Dam. Elemental composition of the river water (27 elements), ground water (eight elements), suspended matter (12 elements) and sediments (12 elements) was studied. Aswan High Dam construction, agricultu...

The S.C. Aurul S.A. is a joint venture company owned by the Esmeralda from Australia and the "Remin" National Company of Precious and Non-ferrous Metals in Romania, established in 1992. The design concept was to transport the mining waste away from the city, while the gold and silver in the tailings could be recovered, using efficient and modern technology that was not available at the time the...

The present study explored the interaction between the upriver migration of fish and the blockage of their migration routes by dam construction. Specifically, we studied (i) the capacity of migratory fish to locate alternative routes in the presence of an obstacle, and (ii) the behavior of the fish after they were artificially transferred to the reservoir. With the use of the markrecapture tech...

In this chapter we reflect on a relatively small but influential example of adaptive management which seeks to enhance the environmental benefits of the flow regime in the highly regulated Mitta Mitta River in Australia’s MurrayDarling Basin. In 1999 an operational review recommended the reintroduction of greater in-stream flow variability in the Mitta Mitta River in an attempt to improve river...