perhaps not seen from the view, to the "right" side of that new concrete is a 5 foot dropoff, the drive being in-itself also a retaining wall... aside a comminity canal? perhaps
the meter is in the topleft
valve to left of steping stone path
controller on bottom right corner of house
the heads on that zone are in the turf on the small strip to the right of the original concrete.
so basically, the water flow "horse-shoes" the house
.....for all its worth in mentioning...