This version of the HEC-5 Users Manual replaces the HEC-5 Users Manual dated June 1979. It provides information on the most recent changes to the HEC-5 program which includes a slightly modified input format for certain cards as explained in Exhibit 8 while still accepting data prepared using the 1979 Users Manual.

This appendix is a supplement to the April 1982, HEC-5 Users Manual (and Exhibit 8 from March 1985), and any reference to HEC-5, within the document, refer to the program for quantity regulation.

This exhibit contains a detailed description of each variable on each input card image. A Functional Use Index that can be used to determine which input variables are required for specific tasks appears first. Following the Functional Use Index is a Table of Contents that provides a brief description of all HEC-5 data card images. The Summary of Input Cards at the end of this exhibit shows the sequential arrangement of card images and also serves as the "table of contents" by showing, in Field 10, the page numbers where the variables are described in this exhibit.