High-frequency hydrological data from variable drained small headwater catchments in Estonia

This dataset contains high-frequency hydrological observations from small streams and drainage ditches in Estonia, including water-level time series, manual discharge measurements, and catchment-scale spatial data. Water levels are derived from pressure loggers and corrected for atmospheric pressure using meteorological data adjusted to site elevation. Discharge is estimated using site-specific rating curves based on manual measurements. The dataset also includes documented water-level corrections, station metadata, and GIS-derived catchment characteristics. Temporal gaps due to technical issues are preserved and not interpolated. The data support analyses of small-stream hydrology, event-scale dynamics, and the influence of land use and drainage on flow regimes.