Quite fast flowing here and when it rains hard as it did a few nights ago it tends to go where it wants, had it out across one field then, one stream would flow though a foot pipe nearly all the time yet it wouldn't go through a 3 foot one the other night and we are only a mile from the top of the hill watershedThat is the problem with water, it really, really, wants to go downhill.... There is usually a good reason why men with pick and shovels dug ditches or cuts where they are located.