Natural Flow Statistics

Within the Republic of Ireland, Qube utilises the Environmental Protection Agency (EPA) hydrological modelling system for estimation of annual flow duration curves, known as HydroTool. The methods from HydroTool have been updated and expanded for use within Qube.

Details of the method updates are available within the following report to the EPA: Thomas Bree, December 2018, 'Annual and Monthly Flow Duration Curves and Mean Flows for Ungauged atchments in Ireland'.

Subsequent use of the Qube Local Data Algorithm within natural flow estimation in Ireland is detailed here.

Influenced Flow Statistics

Incorporation of artificial influences in Qube is described in the following pages:

• Quantifying Artificial Influences
• Estimation of Artificially Influenced Flows