A reconnaissance was performed for Tunnel Diquini and Source Mariani in the metropolitan region of Port-au-Prince, Haiti, to address concerns of decreasing flows and to evaluate potential impacts of a proposed river diversion scheme in the study area. The tunnel and spring are the two largest water sources serving the Port-au-Prince municipal water system and discharge from the Massif de la Selle carbonate aquifer. Considering their significance and importance to the water security of the region, there are limited data or studies specific to the water sources. An introductory framework was established regarding the flow regimes, the origin of waters, and recharge dynamics of the sources. Field reconnaissance and stable-isotope, tracer, and chloride-mass-balance techniques were applied to strengthen the conceptual understanding of the water sources. Recharge to this portion of the Massif de la Selle carbonate aquifer is variable depending on monthly rainfall intensity and 3–7-year climatic cycles. Rather than a consistent long-term decreasing flow trend, a particularly intense period from 2007 through 2010 resulted in the highest flows on record, which have steadily recessed to historical norms in recent years. The recharge characteristics and catchment areas indicate that neither water source is connected to the River Momance; however, a connection to the River Froide is possible, particularly related to the tunnel. Finally, recharge rates and an estimate of renewable groundwater in the Massif de la Selle show the regional significance and importance of the carbonate aquifer for current supplies and future water development.

对海地太子港都会区的 Diquini 隧道和 Source Mariani 隧道进行了勘察，以解决流量减少的担忧，并评估拟议河流改道计划对研究区域的潜在影响。隧道和泉水是服务于太子港市政供水系统的两个最大水源，并从 Massif de la Selle 碳酸盐含水层排放。考虑到它们对该地区水安全的重要性和重要性，针对水源的数据或研究有限。建立了一个关于流态、水源和源头补给动态的介绍性框架。应用实地勘察和稳定同位素、示踪剂和氯化物质量平衡技术来加强对水源的概念理解。Massif de la Selle 碳酸盐含水层这部分的补给量因月降雨强度和 3-7 年气候周期而异。从 2007 年到 2010 年的一个特别紧张的时期，不是持续的长期流量下降趋势，而是导致有记录以来的最高流量，近年来稳步下降到历史标准。补给特征和集水区表明两个水源都没有与莫芒斯河相连；然而，连接到弗莱德河是可能的，特别是与隧道有关。最后，Massif de la Selle 的补给率和可再生地下水的估计显示了碳酸盐含水层对当前供应和未来水资源开发的区域意义和重要性。