1. Water supply Flood prediction and forecasting. Water quality
3 principle Scientific and practical motivations for studying streamflow response
Water supply
Flood prediction and forecasting.
Water quality

4. Hyetograph
Water input v. time
Hydrograph
Stream discharge v. time
Watershed response to an event at a point.

6. Storm duration
Water input Tw
Response lag
Delay in beginning of input to rise (Tlr)
Centroid lag to peak
Watershed response time between centroid and peak flow
Time to peak
Duration of hydrograph rise, Tr.
Time of concentration (Tc)
Time it takes water to travel from the hydrologically most distant part of the watershed

7. Baseflow
Flow that is contributed by groundwater sources-not associated with specific events.
Chemical and isotope analysis for the separation of baseflow

8. Mechanism for event response
Channel precipitation
Overland flow
Surface runoff
Subsurface flows

9. Channel precipitation

10. Overland Flow

11. Open channel flow and Stream flow routing
Hydrographs are modified as the flood wave travels through a stream network.
Peak flows tend to decrease or dampen and become delayed.
Streamflow routing is a procedure for modeling this process
Given the Inflow hydrograph, what is the outflow hydrograph.

13. Routing Methods Reservoir and streamflow routing Convex method
Movement of a floodwave through a channel or reservoir.
Convex method
Streamflow routing