Thanks to Quantum GIS (QGIS), you will be able to create and edit maps with ease. The application is quite reliable in its tasks and can be configured to perform lots of different tasks.
Quantum GIS (QGIS)'s interface is where all the map creation process takes place. From that interface, you can select from a large pool of map templates or start your creation from scratch. You even have the ability to save and use your projects in the future. Various plugins for the integration of GPS capabilities exist as well.
With Quantum GIS (QGIS), the exact positioning of vectors can be selected. It is even possible to include search bar and other useful features one would expect from a virtual map. There is no doubt that Quantum GIS (QGIS) will make your maps look professional.
QUESTIONS AND ANSWERS
I am now using geographic information system combined with the new version of USGS flood tool. I used also Ilwis software for gerating watershed map and flow accumilation