Variations in the natural chemical concentration of river water during flood flows, and the lag effect: Some further comments
- 1 August 1975
- journal article
- Published by Elsevier BV in Journal of Hydrology
- Vol. 26 (3-4), 237-244
- https://doi.org/10.1016/0022-1694(75)90005-0
Abstract
Following upon the recent paper by Glover and Johnson (1974), the authors briefly present results from several Devon catchments which demonstrate the complexity of variations in the chemical concentration of river water during flood flows. Certain solute species increase rather than decrease in concentration during storm events and the “chemographs” of those species which exhibit dilution are often complicated by a “flushing effect”. Some solutes may exhibit variable response, evidencing increased and decreased concentrations during different events. Even in small catchments, the “chemograph” response can lag behind the stream-flow response and examples of where the trough precedes the stream-flow peak have also been documented. Values of “chemograph” lag between zero and 14.5 h have been found at a gauging station on a Devon river and the variation can be tentatively explained in terms of catchment moisture status. Any attempt to account for the nature and timing of “chemograph” response must consider processes operating over the entire catchment in addition to those in the channel.Keywords
This publication has 5 references indexed in Scilit:
- Variations in the natural chemical concentration of river water during flood flows, and the lag effectJournal of Hydrology, 1974
- The variation of dissolved constituents with discharge in some Norfolk riversJournal of Hydrology, 1973
- A simple pumping sampler for research into suspended sediment transport in small catchmentsJournal of Hydrology, 1971
- The Hydrologic Response of The Eaton River Basin, QuebecCanadian Journal of Earth Sciences, 1971
- The progressive lag of sediment concentration with flood wavesEOS, Transactions American Geophysical Union, 1956