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Research article - Peer-reviewed, 2004

Kinematic model of solute transport in stream networks: Example with phosphate retention in Morsa watershed, Norway

Wörman, A; Kløve, B; Wachniew, P


A theoretical description of reactive solute transport in a network of stream channels is derived by convoluting unit solutions based on a physical representation of transport and topographical information of the distributions of solute load as well as pathways. The theory is applied to a generic analysis of the phosphate export in Morsa watershed due to the load from 620 individual households with a local wastewater treatment. Essential factors for the phosphate export is filtering of the water in stream-bed sediments through a distribution of hyporheic flow paths of various lengths. This generic study indicates that a significant portion of phosphate is retained in the hyporheic zones for a long time. The 90\% recovery time following a hypothetical remediation action in the households is expected to be in the order of one decade


solute transport; watersheds; stream network; hyporheic zone; transport model

Published in

Archives Of Hydroengineering And Environmental Mechanics
2004, Volume: 51, number: 1, pages: 41-53

    SLU Authors

    UKÄ Subject classification

    Fish and Aquacultural Science
    Environmental Sciences related to Agriculture and Land-use

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