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Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam. / Stähly, Severin; Franca, Mário J.; Robinson, Christopher T.; Schleiss, Anton J.

In: Scientific Reports, Vol. 9, No. 1, 5176, 2019.

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Stähly, Severin ; Franca, Mário J. ; Robinson, Christopher T. ; Schleiss, Anton J. / Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam. In: Scientific Reports. 2019 ; Vol. 9, No. 1.

BibTeX

@article{6ec62082e733479ab7606f3632568b60,
title = "Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam",
abstract = "River reaches downstream dams where a constant residual flow discharge is imposed, often lack sediment supply and periodic inundation due to the absence of natural flood events. In this study, a two-year return flood was released from an upstream reservoir and combined with sediment replenishment to enhance instream habitat conditions downstream of Rossens hydropower dam on the Sarine River in western Switzerland. Sediment replenishment consisted of four sediment deposits distributed as alternate bars along the river banks, a solution which was previously tested in laboratory. The morphological evolution of the replenishment and of the downstream riverbed were surveyed including pre- and post-flood topography. A hydro-morphological index to evaluate the quality of riverine habitats, based on the variability of flow depth and flow velocity in the analyzed reach, was investigated. The combination of the artificial flood with sediment replenishment proved to be a robust measure to supply a river with sediment and to enhance hydraulic habitat suitability.",
author = "Severin St{\"a}hly and Franca, {M{\'a}rio J.} and Robinson, {Christopher T.} and Schleiss, {Anton J.}",
year = "2019",
doi = "10.1038/s41598-019-41575-6",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam

AU - Stähly, Severin

AU - Franca, Mário J.

AU - Robinson, Christopher T.

AU - Schleiss, Anton J.

PY - 2019

Y1 - 2019

N2 - River reaches downstream dams where a constant residual flow discharge is imposed, often lack sediment supply and periodic inundation due to the absence of natural flood events. In this study, a two-year return flood was released from an upstream reservoir and combined with sediment replenishment to enhance instream habitat conditions downstream of Rossens hydropower dam on the Sarine River in western Switzerland. Sediment replenishment consisted of four sediment deposits distributed as alternate bars along the river banks, a solution which was previously tested in laboratory. The morphological evolution of the replenishment and of the downstream riverbed were surveyed including pre- and post-flood topography. A hydro-morphological index to evaluate the quality of riverine habitats, based on the variability of flow depth and flow velocity in the analyzed reach, was investigated. The combination of the artificial flood with sediment replenishment proved to be a robust measure to supply a river with sediment and to enhance hydraulic habitat suitability.

AB - River reaches downstream dams where a constant residual flow discharge is imposed, often lack sediment supply and periodic inundation due to the absence of natural flood events. In this study, a two-year return flood was released from an upstream reservoir and combined with sediment replenishment to enhance instream habitat conditions downstream of Rossens hydropower dam on the Sarine River in western Switzerland. Sediment replenishment consisted of four sediment deposits distributed as alternate bars along the river banks, a solution which was previously tested in laboratory. The morphological evolution of the replenishment and of the downstream riverbed were surveyed including pre- and post-flood topography. A hydro-morphological index to evaluate the quality of riverine habitats, based on the variability of flow depth and flow velocity in the analyzed reach, was investigated. The combination of the artificial flood with sediment replenishment proved to be a robust measure to supply a river with sediment and to enhance hydraulic habitat suitability.

UR - http://www.scopus.com/inward/record.url?scp=85063511567&partnerID=8YFLogxK

U2 - 10.1038/s41598-019-41575-6

DO - 10.1038/s41598-019-41575-6

M3 - Article

VL - 9

JO - Scientific Reports

T2 - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 5176

ER -

ID: 52903765