Impact of Surface Hydraulic Conductivity and Soil Moisture on River Basin Hydrology
Explore how changing surface hydraulic conductivity and soil moisture levels affect evaporation, transpiration, streamflow, and base flow dynamics in river basins through simulations from 2000-2003.
Impact of Surface Hydraulic Conductivity and Soil Moisture on River Basin Hydrology
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Presentation Transcript
2000-2003 Basin Totals • Changing surface hydraulic conductivity by a factor of 2: • Does not significantly change evaporation or transpiration • Does not significantly change total streamflow • Does significantly change proportion of flow that occurs as base flow vs return flow. For smaller k larger proportion as return flow. • Changing m by a factor of 10: • Does significantly change evaporation and transpiration. For small m (rapid decay of k and less variability in saturation deficit) higher E, T. For large m (slow decay of k and more variability in saturation deficit) smaller E,T. • Does significantly change total streamflow. For small m higher E, T is accompanied by higher streamflow. For large m lower E,T is accompanied by lower streamflow. • Does significantly change proportion of flow that occurs as base flow vs return flow. For small m most of streamflow is from return flow. For large m all of stream flow is from baseflow.