ABSTRACT Understanding recharge processes is fundamental to improve sustainable groundwater resource management. Shallow groundwater (SGW) is being developed for multiple purposes in Ethiopia without consideration of monitoring. We established a citizen science-based hydro-meteorological monitoring network, with a focus on SGW recharge estimation, in Eshito micro-watershed, Ethiopia. Citizen scientists collected rainfall, groundwater-level and stream water-level data. We characterized the shallow aquifer using pumping tests. The data were used to estimate SGW recharge using three methods: chloride mass balance, water-level fluctuation (WLF) and baseflow separation. Approximately 20% and 35% of annual rainfall amount contributes to recharge based on the chloride mass balance and WLF results, respectively. Baseflow separation showed recharge values for the watershed vary from 38% to 28% of annual rainfall at the upstream and downstream gauging stations, respectively. This study shows that the recharge in previously unmonitored micro-watersheds can be studied if citizens are involved in data generation.

中文翻译：

---

埃塞俄比亚裂谷盆地Eshito微流域多方法地下水补给估算

摘要 了解补给过程是改善可持续地下水资源管理的基础。埃塞俄比亚正在开发用于多种用途的浅层地下水 (SGW)，而没有考虑进行监测。我们在埃塞俄比亚埃希托小流域建立了一个基于公民科学的水文气象监测网络，重点是 SGW 补给估算。公民科学家收集了降雨量、地下水位和河流水位数据。我们使用抽水测试对浅层含水层进行了表征。这些数据用于使用三种方法估算 SGW 补给：氯化物质量平衡、水位波动 (WLF) 和基流分离。根据氯化物质量平衡和 WLF 结果，大约 20% 和 35% 的年降雨量分别有助于补给。基流分离显示流域的补给值分别在上游和下游测量站的年降雨量的 38% 到 28% 之间变化。这项研究表明，如果公民参与数据生成，则可以研究以前未受监控的微型流域的补给。