SmartRivers - a member of the Riverfly Plus citizen science family - enables volunteer hubs, supported by an IFM certified training scheme, to monitor the water quality in their rivers to a near-professional standard. Aquatic invertebrate species and abundances are obtained from 3 minute kick-sweep sampling to Environment Agency guidelines. Samples are preserved in Industrial Denatured Alcohol and either sent away for professional identification or analysed by the volunteers. The species lists produced from the analysis are plugged into a biometric calculator to produce scores against various stress types, including sediment, phosphorus, flow, chemicals and organic pollution. All new sites added get a professional benchmark survey in spring and autumn before they are monitored by volunteers. Additional information about the dataset can be found on https://wildfish.org/project/smart-rivers/. The main database is also viewable at: https://wildfish.cartographer.io. Please email smartrivers@wildfish.org to request a login.