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<br />FOREWORD <br /> <br />This Training Doclllllent is intended to show how the encroachment <br />routines in computer progra. HEC-2 can be used to evaluate the i.pact <br />of floodway encroac'-ents on water surface profiles. Funding for <br />preparation of this document was provided by the Flood Plain Manage- <br />ment Branch. Office. Chief of Engineers. The cOlllputer program HEC-2 <br />was developed by Bill S. Eichert. The encroachment routines were <br />added to the program by Nr, Eichert in 1971, <br />The author wishes to acknowledge contributions by Mr. John C. <br />Peters and Mr. Eichert to the material contained in this document. <br />