Abstract
We consider effects of bed and bank-side vegetation on hydraulic resistance of small streams, and develop simple quantitative relationships for predicting and quantifying these effects using the normalized plant characteristics. We conducted two field studies to explore effects of submerged aquatic and bank-side vegetation on stream hydraulics. In the first study, we examined the effects of aquatic plant biomass, stature and architecture on hydraulic conditions in five small streams representing a range of channel dimensions, flows and aquatic plant assemblages. In the second field study, we created experimental floods in a small stream to examine the effects of submerged bank-side vegetation on hydraulic conditions. The results of the studies and the relationships presented in the paper may be used to provide initial estimates of resistance coefficients for hydraulic modelling, predicting effects of aquatic weed management and bank-side planting on flood levels, and designing naturalisation and enhancement projects for small streams.
| Original language | English |
|---|---|
| Title of host publication | River Flow 2006 |
| Subtitle of host publication | Proceedings of the International Conference on Fluvial Hydraulics, Lisbon, Portugal, 6-8 September 2006 |
| Editors | Elsa C. T. L. Alves, António H. Cardoso, João G. A. B. Leal, Rui M. L. Ferreira |
| Publisher | Taylor & Francis |
| Pages | 639-646 |
| Number of pages | 8 |
| ISBN (Electronic) | 9781439833865 |
| ISBN (Print) | 9780415408158, 0415408156 |
| Publication status | Published - 2006 |
Keywords
- SUBMERGED FLEXIBLE VEGETATION
- FLOW RESISTANCE