Unit hydrographs of evolving urban watersheds across the United States

The dataset contains the land cover, climate (precipitation and air temperature), unit hydrograph and its characteristics (peak and time to peak), and study watershed boundaries. These data were applied to investigate the impacts of changes in land cover and climate on stormflow of evolving six urban watersheds, representing six different hydroclimate of the conterminous United States. Overall, the study found increasing trends in peak and decreasing trends in time to peak of unit hydrographs, suggesting larger and quicker stormflows driven by changes in land cover and climate. The long-term trends in unit hydrograph characteristics could be useful for projecting future stormflows and implementing flood forecasting and mitigation strategies.