Due to the numerous occasions of human injuries around storm drain inlets, especially during large precipitation events, Mile High Flood District sought to redevelop design criteria for storm drain inlet gates. Multiple gates were tested in a large, outdoor flume with the capacity to fully submerge each gate. The Larimer County Dive Rescue Team volunteered to be test subjects for the prototype scaled model. They stuck themselves to the storm grate at high flow rates and attempted to escape. In addition to the flume testing, a computational fluid dynamic model was produced using Flow-3D to estimate the forces on an object stuck to each grate tested. The prime interest of these tests was to obtain human feedback on the ease of escape from each grate at different submergence depths.