Hydrological modelling datasets for streamflow modelling at the basin scale basins in Nigeria

This dataset contains observed river discharge time series with the mesoscale Hydrologic Model (mHM). The data support hydrological simulations, calibration, and validation aimed at evaluating streamflow dynamics in data-sparse basins. Daily discharge records were collected for four basins in Northern Nigeria: Oroo, Jamaare, Hadejia, and Kaduna. The dataset covers the period from January 1, 1983, to December 31, 2011. The data were processed using R (statistical computing environment) and QGIS (Geographic Information System) to ensure accuracy and spatial referencing, and hydrologic modelling was performed using the mesoscale Hydrologic Model (mHM). This dataset was produced as a research project focused on understanding hydrological processes in data-scarce basins in Nigeria. The primary language of the documentation and associated metadata is English.