I have used the ESRI terrain layer and created a mathematical surface that I believe would be helpful to the people around Houston in determining the flood risk of their home-site. I am looking to create a web-based map that would include this layer, the current FEMA flood risk outlines and the original terrain surface. I’ve successfully created a web map with these layers, however, I have not gotten the “Dynamic Range Adjustment” to work (which is essential for the map to function correctly). I presume that I will need to use the Image Service functionality for this application. Would someone be willing to give me some advice/instruction to get me going in the right direction?