I am using FEMA's Hazus Flood Model. I am using the Project Setup and Validation Box for a Riverine Scenario. After selecting okay I receive the following message:
"The spatial reference of the input layers are not consistent. Please use ArcToolbox to assign/project the input map layers to a common spatial reference"
Can someone shed light on what this means and what I need to do? I am still an amateur GIS user.