“…Citizen science projects can obtain high spatial resolution data, even in remote areas (Weeser et al, 2018), and thus provide an excellent opportunity to collect hydrological data (Lowry and Fienen, 2013;Njue et al, 2019). Citizen scientists have observed water levels (Lowry and Fienen, 2013;Weeser et al, 2018), flood heights and extents (See, 2019;Sekajugo et al, 2022), groundwater levels (Little et al, 2016;Nath and Kirschke, 2023), water quality (Capdevila et al, 2020;Blanco-Ramírez et al, 2023), plastic pollution (Cook et al, 2021;Syberg et al, 2020), and also the state of temporary streams (Turner and Richter, 2011;Kampf et al, 2018;Allen et al, 2019;Truchy et al, 2023). Citizen science projects for temporary streams record the flow state with a visual approach (i.e., they do not use any measurement devices, except for a global positioning system (GPS) or a smartphone).…”