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Potential sedimentation impacts related to dam removal : Icicle Creek, Washington, U.S.A.

Dams and geomorphology. Special issue

Auteurs :
LORANG, M.S.
AGGETT, G.
BEYER, P.J.

Description :
A series of small dams were built in Icicle Creek in 1937. A flow-competence approach was used to assess the restoration potential of the river to do the work of flushing sediments and reestablishing the predam stream channel characteristics. A sediment probe, a total station, a GPS and aerial photographs were used to map out sediment deposits and measure their depths to determine sediment volumes. Grain size distributions from bed sediments, bars, islands and stream banks were used to assess potential downstream sedimentation impacts. The total volume of sediment trapped behind the dams was estimated. Control flushing of the trapped sediments over several years poses very little threat to water quality and spawning habitats.


Type de document :
Article de monographie

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2005, vol. 71, n°. 1-2, p. 182-201, nombre de pages : 20, Collation : Illustration, Références bibliographiques : 20 ref.

Date :
2005

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

Langue :
Anglais
Droits :
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