Well, 4 bar is about 133 feet of head. I'm guessing that he doesn't have a 100 foot waterfall on his property, he has a stream that loses 100 feet of elevation

Well, 4 bar is about 133 feet of head. I'm guessing that he doesn't have a 100 foot waterfall on his property, he has a stream that loses 100 feet of elevation over some large distance.