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HYDROLOGICAL REGIME OPTIMIZATION MODEL FOR SUSTAINABLE MANAGEMENT OF LAKE: CASE STUDY OF TASU LAKE

Kristaps Siltumens, Inga Grīnfelde, Jovita Pilecka-Uļčugačeva, Lasma Lucija Vebere, Anda Bakute

First published: 2021-12-20https://doi.org/10.5593/sgem2021/3.1/s12.17View metrics

Abstract

The increasing world population demand for bioeconomy products intensify the nitrogen cycle and encourage eutrophication in water bodies. Global climate change and land use transformation have a significant impact on the hydrological cycle. Integrated water management in the catchment area is a sustainable solution for catchment area development and balancing economic and environmental interests. The aim of this study is to develop an optimization model for sustainable lake management. The case study is done in eutrophic Tasu lake, located in the Southwest part of Latvia and is a part of the Alande river catchments basin. The optimization model for sustainable lake management was made in four steps. Firstly the lake bead was scanned by hydroacoustic stream meter RiverRay and data processed using WinRiver II data-processing software. Secondly, the verified data were used to develop a three-dimensional model of Tasu Lake. Thirdly, twelve climate scenarios and two land use transformation scenarios were used to model daily runoff for the period 1990-2099 using the conceptual hydrological model METQ. Finally, the three-dimensional model and modelled runoff data were used to optimize Tasu lake hydraulic parameters and develop optimal parameters for segmentation basin and constructed wetland. The results show the complexity and sensitivity of the lake hydraulic system and highlight the need for integrated catchment area management to balance economic and environmental interests.

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Title
HYDROLOGICAL REGIME OPTIMIZATION MODEL FOR SUSTAINABLE MANAGEMENT OF LAKE: CASE STUDY OF TASU LAKE
Authors
Kristaps Siltumens, Inga Grīnfelde, Jovita Pilecka-Uļčugačeva, Lasma Lucija Vebere, Anda Bakute
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Water Resources. Forest, Marine and Ocean Ecosystems
Publisher
STEF92 Technology
Year
2021
Pages
123-130
SWS Citekey
Siltumens202112131138
ISSN
1314-2704
ISBN
978-619-7603-24-8
Language
en
Publication type
Conference Paper
Keywords
Integrated water managementhydrological regimeoptimization modelsustainable nitrogen management
References3

  1. Urtane L., Ezeri n?kotnei: vadl?nijas ezeru un to vides ilgtsp?j?gai apsaimnieko?anai, Latvia, Riga: Kurzeme planning region administration, 111 pp.

  2. Kim, D., Ho, H. C., Baranya, S., Muste, M. Qualitative and quantitative acoustic mapping of bed form dynamics, Flow Measurement and Instrumentation, 50, pp 80-89, 2016.

  3. Muste, M., Yu, K., Spasojevic, M. Practical aspects of ADCP data use for quantification of mean river flow characteristic, Part I: Moving – vessel measurements, Flow Measurement and Instrumentation, vol. 15/ issue 1, pp 1-16, 2004.

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