This technical note provides guidelines for using HOBO Water Temp Pro (U22-001) loggers for monitoring steam temperatures. HOBO data loggers are used extensively to monitor stream temperatures to ensure they remain suitable for fish and other aquatic species. By deploying data loggers at multiple locations in streams, it is possible to identify factors contributing to stream temperature increases, and hopefully take appropriate measures before there is damage to the ecosystem. When deploying HOBO water temperature loggers, it is important that they be mounted securely so they do not get washed away during high-flow events. At the same time, it is often desirable to mount them so that they can be read out during deployment. More information about stream temperature monitoring and mounting with our HOBO Water Temp Pro (U22-001) can be found in the following technical note PDF.