xmswiki.com
XMS WikiWelcome to XMS Wiki. Online help for GMS. The XMS Wiki is the online user-supported help database for XMS software developed by Aquaveo LLC. This wiki is meant to be the first resource for users of the Groundwater Modeling System (GMS) the Surface-water Modeling System (SMS) and the Watershed Modeling System (WMS). These three packages are collectively referred to as "XMS". GMS – Groundwater Modeling System. SMS – Surface-water Modeling System. WMS – Watershed Modeling System.
http://www.xmswiki.com/