The 1,000 gallon Water Dog™ is our second largest model and offers all the same features incorporated in our 525 gallon trailer. We used a rugged, unique trailer design to keep this unit as short and as maneuverable as possible; it is only 14′ 7″ long and gives the user double the capacity of a 525. The ideal trailer, especially if you are working a remote site a long way from your water source and need to access tight work areas.