The dataset contains precipitation data obtained from an X‑band weather radar that operated between 2016 and 2018 in the Campinas‑SP region, as well as water‑level measurements collected from the Proença River in Campinas‑SP. The dataset includes 83 variables, namely Date, Time_Match (time), Level_Corr (water level), 1_mm ... 79_mm (precipitation in millimeters for each grid cell within the basin), and mean (the average precipitation across the 79 grid cells). A baseline study using this dataset can be found in the Master’s Thesis entitled “Hydrological modeling of the Proença River basin in Campinas‑SP using machine learning and meteorological data".