The new EFDC_Explorer Modeling System is now available; now the full capability version of EE10. Also included are EE8.5, EFDC+ and CVLGrid1.1 in one package. EE10 marks a major upgrade to the GUI and provides users with a start-of-the-art tool pre- and post-post processor for hydrodynamic, sediment transport and WQ modeling. Enhancements include vertical masks, temporally and spatially varying fields, and multi-class dye options. A free Demo version is available for download.