 |
| Titel |
How effective is river restoration in re-establishing groundwater–surface water interactions? – A case study |
| VerfasserIn |
A.-M. Kurth, C. Weber, M. Schirmer |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 6 ; Nr. 19, no. 6 (2015-06-09), S.2663-2672 |
| Datensatznummer |
250120734
|
| Publikation (Nr.) |
 copernicus.org/hess-19-2663-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| In this study, we investigated whether river restoration was successful in
re-establishing groundwater–surface water interactions in a degraded urban
stream. Restoration measures included morphological changes to the river
bed, such as the installation of gravel islands and spur dykes, as well as
the planting of site-specific riparian vegetation. Standard distributed temperature sensing (DTS) and novel active and passive DTS approaches were
employed to study groundwater–surface water interactions in two reference
streams and an experimental reach of an urban stream before and after its
restoration. Radon-222 analyses were utilized to validate the losing stream conditions of the urban stream in the experimental reach. Our results
indicated that river restoration at the study site was indeed successful in
increasing groundwater–surface water interactions. Increased surface water
downwelling occurred locally at the tip of a gravel island created during
river restoration. Hence, the installation of in-stream structures increased
the vertical connectivity and thus groundwater–surface water interactions.
With the methods presented in this publication, it would be possible to
routinely investigate the success of river restorations in re-establishing
vertical connectivity, thereby gaining insight into the effectiveness of
specific restoration measures. This, in turn, would enable the optimization
of future river restoration projects, rendering them more cost-effective and
successful. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|