On Sunday, “Trail Angel” Tom confirmed the worst — there was no water going into the tank for Tule Spring, which means either the spring is dry, or the obstruction is on the “tough” (upstream) side of the fire tank. So, it looks like water caches will be critical along this stretch of the PCT for the remainder of the thru hiker season. This picture, taken by Tom from inside the tank, tells the sorry tale.

So, strategizing how to keep the local water caches stocked is the next step.
Sunday morning, Trail Angel (to be) Allison and I went to the Sandy Road Cache at mile 143.1, so that I could show her where things were. Chip must have just been there, because the cache was fully stocked.