Smart stormwater systems are characterised through the usage of low-cost sensors for measuring the dynamic behaviour of the entire system allowing new opportunities for operation. Measuring devices installed in manholes, sewers and infiltration trenches are often battery-powered using wireless data transfer technologies for data transmission. To provide an overview, a literature study on data transfer technologies was carried out including range and transmission interval. Afterwards, this information was compared with data requirements for real-time control. Especially for control strategies, which involve small storage volumes, the measuring and transmission interval should be sufficiently frequent. With the recent developments in Low Power Wide Area networks, a remote reading of measurement values is now possible allowing for long transmission ranges and short transmission intervals. In order to gather practical experiences within field data transfer technologies, the university campus of the faculty of engineering sciences in Innsbruck (Austria) is equipped with measurement devices to measure water flows to and from the area in the range of minutes. After several transmission tests, a Low Power Wide Area Network, namely LoRaWAN, is put in operation in December 2018 as an extension and both in field indoor and outdoor placements are evaluated.