For the first time in the world, nitrate and ammonium were simulated in a river of a small catchment area with a high temporal resolution of 10 minutes. Diffuse sources (from agriculture) and point sources (from settlements) were taken into account. The corresponding publication is open access and can be read here:

Spill, C., Gassmann, M., 2025. High Resolution Simulation of Nitrate and Ammonium From Point and Diffuse Sources in a Small Headwater Catchment. Hydrological Processes 39 (2). DOI: 10.1002/hyp.70081.