All early flood warning systems (FEWS) work with gauges and communications systems to collect and distribute hydro-meteorological measurements in real-time. The objective is to allow the authorities to take action before the flood reaches critical places. The FEWS of the lower Salado River basin, Argentina, were established after the flood of Santa Fe city in 2003. Frequent loss of information due to communication problems with the repository site increases the operational vulnerability of the network. First, the document analyses the flood frequency of the region using known statistical distributions. Then, it offers a low-cost solution to the loss of information problem based on an interface that transmits in parallel the network data through an electronic bypass without interfering with the FEWS satellite communication system. The tests carried out along three stations show the interface proved efficient in transmitting data via WiFi or mobile communications in real-time. The results establish a one-to-one data correspondence when the satellite system and the redundant system are active. The interface is based on low-cost single-board computers and routers. The variety of commercial sensors tested makes the developed interface portable to similar situations, and the savings achieved – maintenance cost – are significant.

所有早期洪水预警系统（FEWS）均与仪表和通讯系统配合使用，以实时收集和分发水文气象测量结果。目的是让当局在洪水到达关键地点之前采取行动。阿根廷萨拉多河下游流域的FEWS是在2003年圣塔菲市洪灾之后建立的。由于与存储库站点的通信问题而导致的信息频繁丢失，增加了网络的运营脆弱性。首先，该文档使用已知的统计分布来分析该区域的洪水频率。然后，它提供了一种基于信息接口的低成本解决方案，该接口可通过电子旁路并行传输网络数据而不会干扰FEWS卫星通信系统。沿着三个站点进行的测试表明，该接口被证明可以有效地通过WiFi或移动通信实时传输数据。当卫星系统和冗余系统处于活动状态时，结果将建立一对一的数据对应关系。该接口基于低成本的单板计算机和路由器。经过测试的各种商用传感器使开发的接口可移植到类似情况下，并且所节省的成本（维护成本）非常可观。