in recent decades, the developments of artificial intelligence to predict hydrologic models have been widely used. in this study, the ability of artificial neural network(ann) models for modeling and predict the biological oxygen demand (bod) is located on the karun river in west iran were evaluated. to improve the simulation results, wavelet analysis was used as a hybrid model. bod index month...

A prerequisite for integrated land and water resources management (ILWRM) is a holistic river basin assessment. The latter requires information and data from different scientific disciplines but also appropriate data management systems to store and manage historical and real time data, set up protocols that facilitate data and information access and sharing among different stakeholders, and tri...

As “kidneys of the earth”, wetlands play an important role in ameliorating weather conditions, flood storage, and the control and reduction of environmental pollution. With the development of local economies, the wetlands in both the Amazon and Yangtze River Basins have been affected and threatened by human activities, such as urban expansion, reclamation of land from lakes, land degradation, a...

In this study, six fish species of five families are reported for the first time from Yunnan Province, China. The nemacheilid Schistura amplizona Kottelat, 2000 is reported from the Luosuojiang River and Nanlahe River subbasins, Mekong basin; the prochilodontid Prochilodus lineatus (Valenciennes, 1837), the balitorid Vanmanenia serrilineata Kottelat, 2000, and the tetraodontid Monotrete turgidu...

This paper presents de use of the Spin model checker as the core engine to build Decision Support Systems (DSSs) to control complex river basins during flood situations. Current DSSs in this domain are mostly based on simulators to predict the rainfall and the water flow along the river basin. In this paper, we propose a scheme that integrates simulators in the water domain with additional logi...

This paper aims to examine the nature of width, depth and configuration distribution along Kuya River and their temporal directionality of changes. It also pays attention to prepare some simplified indices regarding basin asymmetry, channel asymmetry and river bank stability and to explain the nature of basin and channel asymmetry and river bank stability using those constructed indices. Irregu...

A study on the fish assemblage of the Ipanema River, a small affluent of the Tietê River basin in southeastern Brazil, was performed aiming to look for structural patterns of species diversity in small lowland lotic environments. Fish samplings were performed every two months from June 2003 to April 2004 at four sample sites located on the lower stretch of the river. Local assemblage showed to ...

chah?rmah?l-o-bakhtiy?r? province has an area of some one percent of the area of iran and is situated in the northern basin of karun river, which is one of the most vital flows of the south-west iran. for various reasons, the region has been ignored in the national archeological studies. in a quick glance, the present study seeks to show the significance of the findings obtained in the course o...

Water is a critical resource in the Great Plains. This study examines the changes in long-term mean annual streamflow in the Republican River basin. In the past decades this basin, shared by three states, Colorado, Nebraska, and Kansas, displayed decreased streamflow volumes as the river enters Kansas across the Nebraska-Kansas border compared to values preceding the 1950s. A recent lawsuit fil...

Acquisition and compilation of water-quality data for an 11-yr time period (1996-2006) from 589 stream and river stations were conducted to support nutrient criteria development for the multistate Red River Basin shared by Arkansas, Louisiana, New Mexico, Oklahoma, and Texas. Ten water-quality parameters were collected from six data sources (USGS, Arkansas Department of Environmental Quality, L...