Question
i have water coming through my hat field, but i can't find the source.  it seems to be spreading out as it goes down the hill and creating an ever expanding wet/ mud spot.
how do i find the source and then control the flow ?

Answer
You just have to do a lot of walking around, and poking the ground looking for a place where the water is bubbling out of the ground.  There is no way I can be specific, but if you play dectective long enough, the source should appear.  Also, think out of the box.  Look beyond the area of the leak as well.