Hourly hydrometeorological inputs and catchment attributes for 376 UK catchments (2003-2016)

Preprocessed hourly forcing and target data for 376 UK catchments from September 2003 to August 2016, derived from CAMELS-GB-v2 (Coxon et al., 2025) and the 0.1-degree global hpet dataset (Singer et al., 2021). The 376 catchments are a subset of the 671 CAMELS-GB-v2 catchments with no missing hourly discharge data over the study period. PRECIPITATION_376.csv: hourly catchment-averaged precipitation (mm/hr) from CEH-GEAR, as distributed in CAMELS-GB-v2. DISCHARGE_376.csv: hourly discharge (m3/s) from the National River Flow Archive, as distributed in CAMELS-GB-v2. PET_376.csv: hourly potential evapotranspiration (mm/hr), produced by extracting values from Singer et al. (2021) at each catchment outlet and rescaling so that daily aggregates match the daily PET_CHESS values in CAMELS-GB-v2. Negative values (condensation) replaced with zero; nan values near coasts replaced with the nearest inland cell. ATTRIBUTES_376.csv: subset of CAMELS-GB-v2 catchment attributes for the 376 catchments retained. These data were used in James (2026), "When to use LSTMs over simpler conceptual models for hourly rainfall-runoff modelling", University of Bristol MEng Research Project 4.