Generation of fecal and total coliform surges by stream flow manipulation in the absence of normal hydrometeorological stimuli.

摘要: The response of Escherichia coli and total coliform concentration to increases in river discharge was investigated. Artificial hydrographs were generated on eight occasions between 21 October 1979 3 March 1981 by releasing water from Thruscross Reservoir North Yorkshire into Fewston Reservoir. majority the releases made after rainless periods isolate effects stream channel entrainment those induced rainfall land surface. In absence rainfall, bacterial concentrations are shown increase more than 10-fold stage increases. It is suggested that two stores bacteria must exist catchment, first being a store second or near-channel store. Movement relate hill slope hydrological processes, whereas movement fluvial system may be closely allied sedimentary processes. Some consideration given levels relation European Economic Communities guidelines for contact recreation.