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<br />courses with classroom instruction in topics of hydrologic engineering. <br /> <br />Individual training and short seminars are also included when desirable. <br />The special assistance mission of the Center serves to point up the <br />needs for training as well as for research and provides realistic problems <br />for testing techniques and programs. <br /> <br />THE FLOOD HYDROGRAPH PACKAGE (HEC-l) <br /> <br />General Capabilities <br />HEC-l can be characterized as a single storm event flood runoff <br />simulation model. Most ordinary flood hydrograph computations associated <br />with precipitation and runoff on a complex multisubbasin, multichannel <br />river basin can be accomplished with the program. Because of the modelling <br />capability of the program, a number of other routines are included that can <br />assist in determining the appropriate parameters needed to model the runoff <br />process and to evaluate the effect of management alternatives. <br /> <br />The five major types of computations that can be performed by HEC-l <br /> <br />are: <br /> <br />'. <br /> <br />. Generalized precipitation, runoff, routing and combining <br />operations to simulate the hydrologic response of a <br />watershed and its stream network (the modelling element); <br />. Optimization of routing parameters (assistance in parameter <br />derivation); <br />. Optimization of unit hydrograph and loss rate parameters <br />(assistance in parameter derivation); <br /> <br />3 <br />