The Dolphin Water Removal Unit is a lifesaver when it comes to salvaging matches, clinics, or any important event following a rain. The Dolphin absorbs water rather than moving it ahead, causing as little disturbance to the soft court surface as possible. The Dolphin is a must-have for courts that tend to puddle in low areas and court owners that need to dry their courts off quickly after a rain. Water is stored in a 14 gallon holding tank within the drum for rapid disposal. 24" Diameter.