A few weeks ago I finally got power hooked up to my shed, but I have had a slight water problem I've had to sort out since doing so. When I hand dug the trench to run the power in across the backyard, I smashed through what I thought was a rubbish piece of clay pipe in the last 200mm of the trench I dug. The old clay pipe was about 150mm under the grass, and I know it had nothing to do with any of my storm water or sewer pipes (I got new pvc pipe put in years ago), and the big sewer mains is right on the back fence, so thought nothing of the old clay pipe. A few days after power was hooked up it rained here, and a day later water was flowing up out of the trench I had dug and since back filled. Today I redug the end of the trench up, cut back tree roots and the ends of the busted clay pipe, then grabbed a bit of 100mm pvc pipe and a couple of fernco connections from the local plumbing supply store, and repaired the busted pipe. I then had to walk down the road with my wheelbarrow to where they are doing some earthworks at the school, and grabbed some top soil to fill the trench up that has sunk since it rained.
Hopefully my water issue is now resolved.