Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)

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Analysis of hydrological changes in the main stream of Chishui River before and after hydropower construction

Authors
Wentong Wang1, Jing Zhang1, Qi Wang1, Jinyong Zhao1, *
1Department of Water Ecology and Environment China Institute of Water Resources and Hydropower Research, Beijing, 10038, China
*Corresponding author. Email: zhaojy@iwhr.com
Corresponding Author
Jinyong Zhao
Available Online 30 December 2023.
DOI
10.2991/978-94-6463-336-8_67How to use a DOI?
Keywords
Hydrological regime; Degree of hydrological change; Chishui River; RVA method
Abstract

Based on flow data from the Luodian River Hydrological Station, the RVA analysis method was first used to measure the degree of hydrological change of the five groups of indicators in the IHA index system. The improved RVA method combined with the Nemerow index was then used to calculate the overall degree of hydrological change and the comprehensive degree of hydrological change of each indicator group. The study found that the overall degree of hydrological change of the main channel of the Chishui River was low. Except for the frequency and duration of high and low flows, which were moderately changed, the other four index groups were all low-level changes. Most of the hydrological index changes were low-level, there are no high-level changing indicators; after the establishment of Yudong Hydropower Station, the discharge tends to be uniform, the frequency and duration of high and low flows and the annual extreme flow index group have relatively large changes, the rate and frequency of flow conditions rate and frequency of water condition changes have decreased, low flow occurs significantly earlier.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
Series
Advances in Engineering Research
Publication Date
30 December 2023
ISBN
978-94-6463-336-8
ISSN
2352-5401
DOI
10.2991/978-94-6463-336-8_67How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Wentong Wang
AU  - Jing Zhang
AU  - Qi Wang
AU  - Jinyong Zhao
PY  - 2023
DA  - 2023/12/30
TI  - Analysis of hydrological changes in the main stream of Chishui River before and after hydropower construction
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 576
EP  - 583
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_67
DO  - 10.2991/978-94-6463-336-8_67
ID  - Wang2023
ER  -