Equilibrium or indeterminate ? Where sediment budgets fail : sediment mass balance and adjustment of channel form, Green River downstream from Flaming Gorge Dam, Utah and Colorado

Dams and geomorphology. Special issue

Auteurs :
GRAMS, P.E.
SCHMIDT, J.C.
BEYER, P.J.

Description :
This study examines bed and bank adjustment in the 105-km reach of the Green River immediately downstream from Flaming Gorge Dam by the use of historical aerial and oblique photographs, analysis of current and abandoned stream-gaging records, and field observations. The AA. show that the sediment budget is indeterminate and that this river segment is not degrading, but is, in fact, accumulating sediment. They also show that robust measures of channel change over long reaches better characterize the style and magnitude of channel adjustment than limited measures over short reaches. This analysis presents a new perspective on the relationship between sediment mass balance, channel-form adjustment, and reach-scale geomorphic organization.


Type de document :
Article de monographie

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2005, vol. 71, n°. 1-2, p. 156-181, nombre de pages : 26, Collation : Illustration, Références bibliographiques : 27 ref.

Date :
2005

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier