Daily Hydrological Time-Series Dataset of Water Level, Upstream–Downstream Flow, and Storage in the Euphrates River at Haditha Dam (1989–2024)

This dataset provides long-term daily hydrological observations of the Euphrates River at Haditha Dam, covering a continuous period from 1 June 1989 to 30 September 2024. It contains daily measurements of river water level, upstream and downstream water heights, and estimated water volume, recorded at a single representative monitoring location associated with the Haditha Dam system. The dataset was compiled from raw hydrological records and subsequently cleaned, quality-checked, and standardized to ensure consistency and reliability. Duplicate timestamps were removed, missing values were preserved as NaNs without interpolation, and all numerical variables were formatted into a uniform structure suitable for time-series analysis. A standardized date field is included to support direct integration with statistical, hydrological, and machine-learning workflows.