ARS | Publication request: Diurnal evapotranspiration impacts on streamflow in a riparian buffer system

Submitted to: American Society of Agricultural and Biological Engineers
Publication Type: Abstract Only
Publication Acceptance Date: April 25, 2012
Publication Date: July 29, 2012
Citation: Bosch, D.D., Marshall, L.K., Allen, P.M. 2012. Diurnal evapotranspiration impacts on streamflow in a riparian buffer system [abstract]. American Society of Agricultural and Biological Engineers.

Technical Abstract: Forested riparian buffers throughout the Southeastern United States directly impact streamflow in the region. Shallow water table conditions provide for direct interaction between the tree’s active root system and groundwater. High temperature conditions throughout much of the growing season leads to high evapotranspiration and water uptake by this riparian buffer system. This can directly impact stream baseflow conditions and long-term streamflow. Streamflow, groundwater, and evapotranspiration data were collected for a first order stream near Tifton, Georgia USA. The region contains low-gradient broad floodplain streams where interaction between forested riparian buffers and streamflow is prevalent. The data were used to examine periods of the year where evapotranspiration rates of the riparian buffer most dramatically impact streamflow. Flow-paths and subsurface hydraulic gradients were examined. These data are useful for long-term watershed planning and hydrologic budgets for the region.