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Main Title: Modeling the impacts of climate extremes and multiple water uses to support water management in the Icó-Mandantes Bay, Northeast Brazil
Author(s): Matta, Elena
Koch, Hagen
Selge, Florian
Simshäuser, Max Nino
Rossiter, Karina
Silva, Gérsica Moraes Nogueira da
Gunkel, Günter
Hinkelmann, Reinhard
Type: Article
Language Code: en
Abstract: The hydropower production, water supply and aquaculture services of the Itaparica Reservoir are of immense importance for the Brazilian Northeast. Uncontrolled water resources consumption (e.g. irrigation, water supply), climate and land use change effects deteriorated the water quantity and quality in the reservoir, leading to socio-economic and environmental problems. In this work, a depth-averaged shallow water model was set up for the Icó-Mandantes Bay, one major branch of the reservoir, using the open TELEMAC-MASCARET system. The aim was to assess the impacts of the newly built water diversion channel, as well as the effects of a flood and tracer transport from an intermittent tributary, both located in the bay. An alternative approach to estimate the water retention times was additionally implemented. The simulations showed that though the diversion channel did not significantly influence the hydrodynamics of the bay, it is necessary to continuously monitor water quality parameters in the withdrawal, especially during rainy periods after droughts, because of the nutrient inputs from the tributary and the overflows of the nearby drainage systems. Management measures adapting to the continuously changing natural conditions and anthropogenic impacts are thus indispensable and the model presented can be a valuable supporting tool for this purpose.
Issue Date: 25-Jul-2018
Date Available: 4-Apr-2019
DDC Class: 627 Wasserbau
620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): Itaparica Reservoir
multiple uses of water
water diversion project
water residence time
Sponsor/Funder: BMBF, 01LL0904A, Verbundvorhaben INNOVATE: Nachhaltige Nutzung von Stauseen durch innovative Kopplung von aquatischen und terrestrischen Ökosystemfunktionen - Teilvorhaben 1: Verbundkoordination, Grüne Leber und Ökonomie
Journal Title: Journal of water and climate change
Publisher: IWA Publishing
Publisher Place: London
Publisher DOI: 10.2166/wcc.2018.254
EISSN: 2408-9354
ISSN: 2040-2244
Appears in Collections:FG Wasserwirtschaft und Hydrosystemmodellierung » Publications

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