LECTU10(streamflow)

LECTU10(streamflow) - time ainfallobserved hyetograph rate...

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interception surface storage stream flow rate ainfall rate infiltration subsurface storage overland flow channel flow subsurface flow direct runoff observed hyetograph baseflow time time AOM 4643Rainfall-Discharge Relationships AOM 4643 - Surface Waters Last time talked about surface runoff production mechanisms (Horton, Dunne). Characterized streamflow hydrograph, and discussed methods of separating groundwater base flow component of streamflow hydrograph to get direct runoff component attributable to particular storm event (straight-line, and variable slope). If we take a systems approach to rainfall discharge relationship in a watershed: Excess rainfall - rainfall not retained as storage on land surface or infiltrated into the soil, i.e., rainfall which becomes direct runoff Graph of excess rainfall vs. time is called excess rainfall hyetograph. Most excess rainfall-discharge relationships use a systems approach to develop a deterministic lumped unsteady model of the rainfall-discharge relationship. Watershed is treated as a “black-box” that produces output hydrographs in response
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LECTU10(streamflow) - time ainfallobserved hyetograph rate...

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