....If that's the water tower I'm thinking of, it's on one of the roads out to one of the public beaches south of Santa Cruz. .....
No, the photo above is an Ansel Adams, shot in 1960 in San Francisco.
But I'm thinking I recall the tower you mention south of Santa Cruz, I seem to recall there are 2 to 4 of them in a row, maybe a quarter mile between them.
I just google map cruised the area, thinking west of Watsonville on Beach Street, west of San Andreas, but I couldn't find them in satellite view.
--- a little later---
Kept google map cruising, found pedestals, no towers.
2326 W. Beach St., Watsonville, CA
into google maps street view, there's one pedestal there, another down the road at 2488.
If you can think where towers are out that way, it's your turn. I sorta do and sorta don't remember towers now that I've found pedestals.
Awful color cast, not my photo...... .