River channel change following dam removal in an ephemeral stream

Auteur(s) et Affiliation(s)

NEAVE, M.

University of Sydney, Sydney, Australie

RAYBURG, S.

University of Technology, Sydney, Australie

SWAN, A.

University of Sydney, Sydney, Australie

Description :
The aim of this study is to analyse the geomorphic responses of the ephemeral Bushrangers Creek, central western New South Wales, Australia, following the 2002 removal of 15 m high dam. Comparisons of pre- and post-dam removal survey data indicate that there has been repeated base-level lowering upstream of the former dam site. Longitudinal profiles of the thalweg before and after dam removal show an average bed lowering of 0.5 m and reveal a 90 m long channel with a slope in excess of two-times greater than the pre-dam removal channel has formed upstream of the former dam wall.

Type de document :
Article de périodique

Source :
Australian Geographer, issn : 0004-9182, 2009, vol. 40, n°. 2, p. 235-246, nombre de pages : 12, Références bibliographiques : 1 p.

Date :
2009

Editeur :
Pays édition : Australie, Sydney, Geographical Society of New South Wales

Langue :
Anglais