How urban stormwater regimes drive geomorphic degradation of receiving streams
Kathryn L Russell, Geoff J Vietz, Tim D Fletcher
Progress in Physical Geography: an international review of geographical work in the natural and environmental sciences | SAGE PUBLICATIONS LTD | Published : 2020
For streams draining urban catchments, sediment transport capacity is the key driver of physical impacts including bed sediment removal and channel incision. The main unanswered question is the relative role of flow alteration compared to sediment supply in influencing sediment transport capacity. With this objective, we computed sand and gravel bed sediment transport capacity using the Wilcock and Kenworthy two-fraction bedload transport relation for nine streams in catchments covering a gradient of urbanisation. Computations were done for typical natural bed surface material, based on conditions in the least urban study streams. We compared transport capacity distributions and cumulative t..View full abstract
Awarded by Australian Research Council
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was funded by an Australian Government Research Training Program scholarship and the Melbourne Waterway Research Practice Partnership (http://mwrpp.org).Fletcher was supported by the Australian Research Council (FT100100144) during part of this study, and flow monitoring in several of the study catchments was supported by Australian Research Council project LP130100295. The funding sources had no direct involvement in the study.