Analysis of seepage and stability is considered as an important case in designing which today, withadvanced numeric software acceptable results will be obtained before and after Construction. In thepresent study, the behavior of earth dam against effective factors was investigated by softwareAnsys12. The studied dam is Maroun soil dam, which is located in 19Km north of Behbehan andconstructed o...

The rates and styles of channel adjustments following an abrupt and voluminous sediment pulse are investigated in the context of site and valley characteristics and time-varying sediment transport regimes. Approximately 10.5 x 10m of stored gravel and sand was exposed when Barlin Dam failed during Typhoon WeiPa in 2007. The dam was located on the Dahan River, Taiwan, a system characterized by s...

The ‘range of variability approach’ (RVA) and mapping technique are used to investigate the spatial variability of hydrologic alterations (HA) due to dam construction along the middle and lower Yellow River, China, over the past five decades. The impacts of climate variability on hydrological process have been removed during wet and dry periods and the focus is on the impacts of human activitie...

Steindachneridion melanodermatum, an endemic and endangered species, is the largest catfish in Lower Iguaçu River basin. Currently, wild population of this species no longer exists most basin, probably due to loss habitat by successive hydroelectric dams. This study evaluated spatial distribution abundance S. melanodermatum last free-flowing river stretch approximately 190 km downstream from Sa...

Significant ecological, hydrologic, and geomorphic changes have occurred during the 20th century along many large floodplain rivers in the American Southwest. Native Populus forests have declined, while the exotic Eurasian shrub, Tamarix, has proliferated and now dominates most floodplain ecosystems. Photographs from late 19th and early 20th centuries illustrate wide river channels with largely...

INTRODUCTION: The White River is a mountainous river with head waters on Mount Rainier. The Fish Barrier Structure on the White River serves as a collection point of migratory fish. Operators at the structure collect the fish and transport them upstream of Mud Mountain Dam. Currently, the fish barrier uses a weir to create a head differential, which stops the passage of the migrating fish. Howe...

Spill, used to assist the downstream passage of juvenile Chinook salmon (Oncorhynchus tshawytscha), and steelhead (O. mykiss) at eight dams in the Columbia/Snake River hydrosystem may delay the upstream passage of the adults. To evaluate the potential effects of spill on adult passage we evaluated the historical relationship between the day-to-day variations of spill and upstream fish passage a...

— The ecological functioning of the Senegal River estuary and Lower Delta was negatively affected by the construction of the Diama dam in 1986. As from 1994, managed flood releases were used to rehabilitate part of the floodplain and to create an artificial estuary. By simulating the pre-dam hydrodynamics, ecosystem functions were restored. This allowed the local inhabitants to resume their tra...

localization of underground dams was carried out at garmab seasonal river basin at golestan research station. this project aims to localize and investigate places for establishing subsurface dam in order to control and store underground stream water for the station and study purposes. the methodology was based on studying documents and field research sampling, drilling and analyzing necessary s...