Assessing the behavior of the aquifer system and its changes over time is an inevitable challenge to ensure the use of groundwater in a sustainable way. For this purpose, in this study, by presenting 7 indicators in 5 dimensions of groundwater sustainability, the stability of aquifers located in the Salt Lake catchment over time was calculated. The Salt Lake catchment, with an area of ​​92,884.2 square kilometers, is one of the most important second-grade watersheds in Iran country in terms of the importance of water resources. It is located in the provinces of Tehran, Markazi, Qazvin, Zanjan, Hamedan, Isfahan, Qom, and Alborz, and this basin contains 36 aquifers. In this paper, to investigate the progress of the sustainability plan in the Salt Lake catchment, groundwater sustainability indicators were introduced as measurable variables over time. These indicators, used to assess groundwater sustainability based on measurable and observable data, provide information about the quantity and quality of groundwater resources (current situation and trends), environmental impacts on the aquifer, and social and economic situation (human development index indicators). The sustainability calculated for each index alone can express the degree of sustainability in aquifers in the category related to the index. In addition, through a time series index, the overall stability of aquifers located in this catchment is calculated by integrating all available indicators. The results show that the overall sustainability of the aquifers located in the Salt Lake catchment decreases over time, and in general, aquifers located in the western part of the basin show higher sustainability rather than in other parts. Therefore, it can be said that implementation of the groundwater resources sustainability plan in this catchment has not been successful and the management plan needs to be updated as soon as possible.

评估含水层系统的行为及其随时间的变化是确保以可持续方式使用地下水的不可避免的挑战。为此，在本研究中，通过在地下水可持续性的 5 个维度中呈现 7 个指标，计算了盐湖流域含水层随时间的稳定性。盐湖流域面积92884.2平方公里，是伊朗国家水资源重要性最重要的二级流域之一。它位于德黑兰、马尔卡齐、加兹温、赞詹、哈马丹、伊斯法罕、库姆和阿尔博兹省，该盆地包含 36 个含水层。在本文中，为了调查盐湖流域可持续发展计划的进展，引入了地下水可持续发展指标作为随时间推移的可测量变量。这些指标用于根据可测量和可观察的数据评估地下水的可持续性，提供有关地下水资源的数量和质量（现状和趋势）、对含水层的环境影响以及社会和经济状况（人类发展指数指标）的信息。单独为每个指数计算的可持续性可以表达与指数相关的类别中含水层的可持续性程度。此外，通过时间序列指数，通过整合所有可用指标来计算位于该流域的含水层的整体稳定性。结果表明，盐湖流域含水层的整体可持续性随着时间的推移而下降，总体而言，位于流域西部的含水层的可持续性高于其他地区。