Flooding and excessive rainfall can wreak havoc with indispensable assets and infrastructure. Water treatment plants, for example, are typically near a body of water, and thousands are located on flood plains. By tracking data like rainfall, ground saturation, and upstream water levels, industries and utilities can get early warnings about flooding and take action to protect their customers and equipment.
Many such systems are already in place, and they can be made even more effective with the addition of some smart Internet of Things technologies.
Low-power IEEE 802.15.4e wireless mesh networks, for example, make it possible to create highly scalable networks that can position sensors virtually anywhere. In a IEEE 802.15.4e wireless mesh network, each sensor node has routing capabilities, and data can find its way to the network gateway via any combination of wireless nodes. That means that the network gateway doesn't need to be within range of all the network nodes. If a node is out of range it will just hand off its data to another node, and the process will be repeated until the data reaches the gateway.
The most useful network gateways can connect via either Ethernet or the cellular data networks. That makes it possible to place sensors and Internet gateways in locations that have no access to AC power or wired Ethernet.