Flow and water quality data (starting in 1976) have been collected, analyzed, and plotted at nine USGS gaging stations in the Sandusky River of northern Ohio for several storm events. A procedure has been developed whereby the water as it travels downstream is followed. The calculational procedure is further expanded to include the tracing of conservative water chemistry as it moves downstream. Thus, at a downstream station it is possible to predict such water quality parameters and compare them with their measured values. The conservative substances such as chlorides and conductivity compared well-- such substances indicating these are not conservative and that deposition and resuspension occur in various reaches of the stream. Further, the methodology permits the estimation of the fractions of these substances at a given downstream station which are derived from various upstream sources. Various factors such as point sources, river flow rate, etc., are discussed as to how they affect the transport of total phosphorus, suspended solids, chlorides, conductivity, the nitrogen species, and other water quality parameters. (Author).

Significant, and usually unwelcome, surprises, such as floods, financial crisis, epileptic seizures, or material rupture, are the topics of Extreme Events in Nature and Society. The book, authored by foremost experts in these fields, reveals unifying and distinguishing features of extreme events, including problems of understanding and modelling their origin, spatial and temporal extension, and potential impact. The chapters converge towards the difficult problem of anticipation: forecasting the event and proposing measures to moderate or prevent it. Extreme Events in Nature and Society will interest not only specialists, but also the general reader eager to learn how the multifaceted field of extreme events can be viewed as a coherent whole.

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