On Tue, 06 Sep 2011 11:30:44 -0700, Oren wrote:

" hundreds of yards " of tubing?

It goes down the driveway. The house is on a hill. The driveway winds up
the hill. It's about 300 long strides, so, I figure it's three hundred
yards long. All along, on both sides, are oleander bushes. They survive,
even in our long summers without rain. But they're wilting brown.

cut the line an put a coupling on the tube. It slips over the cut
tubing.

I'll look for that at OSH later this week. Thanks!

Keep looking.

What you mean is that there must be a water supply. I agree with you.
What I'll do is dig up one line at the top of the hill and see if I can
follow it to the water feed!

How deep is the poly buried?

There seems to be two lines of tubing down each side. It's only slightly
buried most of the way as it pops up for a foot or two in a variety of
spots. So I'd say it's only 'covered' and not 'buried'.

Where are you located?
Northern California.

Sometimes, it is better (cheaper) to pull it
out and replace with new. Fix one leak and another one starts.

In spots, it's exposed to the sun. I didn't realize it was cheap. If it's
only $50, then I think I'll replace the whole thing.

However, digging a trench in the hard-caked mudpack will be a lot of
work. I might be lucky in that pulling up the old trench (after soaking
with water to loosen the mudpack) might leave just enough 'trench' to
cover the plastic tubing from the unrelenting sun.

You might try pulling some tube up (if just below the surface) closest
to the house and follow the line that way.

That's what I will do! It seems like the only logical approach because I
can't find the water source by just looking!

Thanks!