ArcView can be used to create a map for the Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS). To do this, you will need to download the conversion files (920 Kb Zip), extract and save them to a folder, and follow the instructions below.

To add a map to HMS using ArcView:

1. Create a View that has a watershed delineation polygon theme and a river/stream/drain line theme.
2. From the File drop-down menu, export the View as CGM Clear Text.
3. Place the file in a root directory to make step 4 easier (example c:).
4. Start ARCHMS.EXE.
5. Specify name and location of CGM file (example c:arcmap).
6. Specify name and location of map file to be created (example c:hmsmap).
7. Move the map file to the desired location.
8. Start HEC-HMS.
9. Open the basin model.
10. Go to File, Basin Model Attributes.
11. Select the Files tab.
12. Specify the map file location.

Example of HEC-HMS model with GIS-generated background map