Radar data reflects off raindrops and is processed and calibrated by Vieux and Assoc., Inc. (VAI) in Oklahoma every 5 min. During a rainfall event, VAI radar rainfall data is delivered to Rice for 43 sub-basins over Brays in 5 min intervals. This process is repeated every 5-10 min during a storm as the overall hydrograph is developed and plotted within FAS5.