That "water stream" could at any point contain rocks or other debris that might turn your hand into a stump if you were to tempt fate like that kid at the end of this.Lesson of the day: Do not volunteer unless you know the exit plan.Remember kids, they can use high pressure water to cut through steel.Imagine getting completely degloved, your whole hand, because you wanted to stick your hand in a high velocity dam release. Ouch.