Graphical HEC-1

Use Graphical HEC-1 to perform flood hydrology calculations, from precipitation to runoff to routing.

Precipitation Modeling
Use gauged rainfall data, standard design rainfall distributions, or synthetic rainfall patterns.
Enter rainfall distributions, basin areas, infiltration losses, and routing methods easily.
Convert rainfall to direct runoff using any combination of five different loss methods, including SCS Curve Number, HEC Exponential, Initial and Uniform, Green and Ampt, and Holtan.
Generate runoff hydrographs using SCS, Clark, Snyder, or a user-defined unit hydrograph method.
Divert and route hydrographs through natural and man-made reaches and reservoirs

Output
View hydrographs at any point in the network, in tabular form or graphically.
Work with hydrographs on-screen, print them out, or export them to other software programs (spreadsheets, word processors, etc.) via the Windows clipboard.
Create tabular output files.
Include watershed schematics in your report.