This dataset contains data collected from a network of 13 stream flow monitoring sites located across the Pontbren study site in mid-Wales, UK. The network was established between 2004-2010 as part of the Pontbren Catchment Study Land Use and Management Multi-Scale Experimental Programme. Data are not available for all sites for the entirety of this duration. 10 of the 13 sites were monitored using bed-mounted acoustic Doppler monitoring systems (Starflows), 2 are monitored using v-notch weir plates with pressure transducers and 1 site simply has a pressure transducer recording stage height. The sub-folders within the main Pontbren streamflow datset folder contain data from the individual monitoring sites. Stage discharge relationships were developed for all sites including those monitored using acoustic Doppler monitoring systems. It is necessary in a lot of cases to use the stage discharge relationship developed in each site to get a better estimate of flow than that provided by the acoustic Doppler monitoring system itself. Data are provided in the form of .txt files and the tipping bucket data is generally split into 6 month blocks. Associated with each data point in the .txt file is a quality assurance code, QA code, in the adjacent column. Details of the dataset, the quality assurance coding system, monitoring locations and stage discharge relationship parameters are provided in the supporting documentation.