Analysis and Determination of the Drought Warning Water Level for Zihong Reservoir
- DOI
- 10.2991/978-94-6239-600-5_26How to use a DOI?
- Keywords
- drought warning water level; reservoir; water supply tasks; water demand
- Abstract
The drought warning water level serves as a key indicator for drought early warning and sustainable water resource management, and prevents threats to the stable operation of the water supply system when the reservoir water level drops due to the continuous decrease in inflow runoff. This indicator establishes a quantitative threshold for drought early warning; when the actual reservoir water level approaches or reaches this critical value, an emergency response procedure is triggered. By quickly activating the drought prevention plan mechanism, the loss caused by drought is minimized. Scientifically and reasonably defining this key parameter will provide technical support for the accurate implementation of drought resistance and mitigation actions. To determine a reasonable drought warning water level that can scientifically guide drought mitigation and disaster reduction efforts, and facilitate timely drought alerts and management decisions, it is essential to comprehensively consider the reservoir’s main functions and its major water use demands. These include the primary water supply tasks, such as urban and rural water supply, industrial production, irrigation water, navigation, and environmental flow. The maximum water demand among these is used as the determining basis, combined with an analysis of the designed inflow conditions. Meanwhile, the determined drought warning water level should be explicit, practical, and based on easily monitored and accessible data. Using the Zihong Reservoir in Shanxi Province as an example, the typical-drought-year method, maximum-value method, composite method, and other approaches were applied to calculate the drought warning water level as 878.05 m, the drought warning storage as 9.54 million m3, and the drought warning period as April to July. The analytical results can provide a reference for regional drought defense and joint operation management.
- Copyright
- © 2026 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
TY - CONF AU - Zhongbo Zhang AU - Simin Geng AU - Xiaoyan He AU - Haijun Yu AU - Guangyuan Kan AU - Yu Hou PY - 2026 DA - 2026/02/26 TI - Analysis and Determination of the Drought Warning Water Level for Zihong Reservoir BT - Proceedings of the 2025 8th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2025) PB - Atlantis Press SP - 266 EP - 278 SN - 2352-5401 UR - https://doi.org/10.2991/978-94-6239-600-5_26 DO - 10.2991/978-94-6239-600-5_26 ID - Zhang2026 ER -