Table 7 Average annual summary of the main components in the hydrological cycle of the Uggerby River catchment during the study period (2002–2015) simulated by SWAT and SWAT–MODFLOW, respectively

Precipitation (mm year⁻¹)

Surface flow (mm year⁻¹)

Lateral subsurface flow (mm year⁻¹)

Tile drain flow (mm year⁻¹)

Drain (MODFLOW, mm year⁻¹)

Groundwater flow (mm year⁻¹)

Total water yield (mm year⁻¹)

Actual evapotranspiration (mm year⁻¹)

Potential evapotranspiration (mm year⁻¹)

Soil storage (mm year⁻¹)

Average annual irrigation amount in the irrigated HRUs (mm year⁻¹)