Natural disasters present a significant challenge to emergency response teams, as they frequently disrupt communication infrastructure and hinder situational awareness. Italy's morphological structure places roughly 14% of its territory at risk for flooding. In particular, Calabria is considered the region most exposed to the high-risk scenario; therefore, to manage the hydrogeological risk many check-dams have been built, whose constant and timely monitoring is crucial. The integration of the Internet of Things (IoT) paradigm and Long-Range radio (LoRa) technology offers a potential solution for ensuring resilient communication networks in the face of natural disasters. This paper presents a field test that implements a multi-hop device-to-device (D2D) LoRa network, in which nearby devices communicate directly through LoRa technology, to optimize the process of updating the ARCHIMEDE database, a WebGIS archive of hydraulic intervetions, that can be interfaced with the Territorial Information Systems used by the Civil Protection of the Calabria Region in Italy.