Abstract
Alluvial channel sands in active ephemeral streams are potentially highly productive aquifers that are normally fully recharged annually. The groundwater resource is constrained by the limited three-dimensional extent of these aquifers. Concepts are developed that propose an increase in alluvial aquifer dimensions at geological boundaries. Multi-electrode resistivity and ground penetrating radar are used to investigate the dimensions of an alluvial channel at a geological boundary with the more resistant lithology upstream. These investigations reveal that alluvial channel fill dimensions are increased in the overlying less-resistant lithology downstream of the boundary. Groundwater flow modelling has been used to determine aquifer potential and identify key fluxes, indicating that significant irrigation potential exists from these aquifers.
| Original language | English |
|---|---|
| Title of host publication | Groundwater and human development |
| Editors | E Bocanegra, M Hernandez, E Usunoff |
| Publisher | Balkema |
| Pages | 233-246 |
| ISBN (Print) | 9780415364430 |
| Publication status | Published - 2005 |
Bibliographical note
Chapter 19Subject classification (UKÄ)
- Geotechnical Engineering