Not my trip (sadly) but I wanted to share this reporter's account of seeking the headwaters of the (once) mighty San Joaquin, above Thousand-Island Lake in the eastern Sierra.
http://blogs.esanjoaquin.com/san-joaquin-river-delta/2010/10/04/drinking-from-the-san-joaquin/
Attempts are underway to restore year-round flow to the over-subscribed river, which once supported an important fishery.
Cheers,
Rick

