river discharge monitoring Articles
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Similarity, difference and correlation of meteorological and hydrological drought indices in a humid climate region – the Poyang Lake catchment in China
Based on the estimation of standardized precipitation–evapotranspiration index (SPEI) and standardized runoff index (SRI), this study investigated the variability and correlation of hydrological drought and meteorological drought in a humid climate region – the Poyang Lake catchment in China. Results indicate that the occurrences of hydrological droughts in the catchment are different from ...
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A grey-based method for evaluating the effects of rating curve uncertainty on frequency analysis of annual maxima
A grey-based technique for characterizing the rating curve uncertainty due to discharge measurement errors and its effect on flood frequency analysis is here presented. On the basis of river stage and discharge measurements, the grey parameters of the rating curve are estimated by using a grey non-linear regression. Commencing with this grey rating curve and a set of annual maximum stages, we ...
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The semi-sewer river: hydraulic backwater effects and combined sewer overflow reverse flows in Central Brussels reduce deoxygenation impact further downstream
In 2011 and 2012 the dissolved oxygen content in the low-discharge river Zenne was monitored continuously, every 5 minutes, downstream of Brussels city centre, making it possible to document the complex mechanisms by which combined sewer overflow (CSO) spills affect both the hydraulics and the oxygen balance of the hydrosystem. In addition to oxygen demand impacts, proportions of water volumes ...
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Information theory applied to evaluate the discharge monitoring network of the Magdalena River
The acquisition of good hydrologic information is an important issue in water management since it is the basis of decisions concerning the allocation of water resources to different users. However, sufficient data are often not available to describe the behaviour of such systems, especially in developing countries, where monitoring networks are inappropriately designed, poorly operated or are ...
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OVA5000 used to gather river quality data in Greece
Cogent Environmental, in collaboration with its Greek partner, has recently completed a successful installation of one of its online heavy metal analysers, the OVA5000, in a remote location in the Amvrakikos Kolpos region of Greece. Cogent Environmental’s capabilities Cogent Environmental Ltd specialises in the development of online systems for monitoring heavy meals, microbial ...
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