s:1015:"TI Citizen scientists monitor water quantity and quality in Kenya AU Rufino, M.C. AU Weeser, B. AU Stenfert Kroese, J. AU Njue, N. AU Gräf, J. AU Jacobs, S. AU Kemboi, Z. AU Ran, A.M. AU Cerutti, P.O. AU Martius, C. AU Breuer, L. AB Key messagesLow-cost, reliable methods for monitoring water levels and water quality are needed to assist water-resource managers in their decision-making.'Citizen scientists' willing to take part in simple monitoring activities can expand the data sets in understudied regions.We worked with citizens in a remote Kenyan catchment who contributed valuable water level and water-quality data. Long-term motivation of participants, active recruiting of new volunteers, and an effective reward system will be key to sustainable citizen-resourced water-monitoring programmes.Data provided by ‘citizen scientists’ can be scientifically robust and cost-effective in supporting the monitoring needed to inform the development of water management strategies. ";