I recently came across this map on Diamond Creek Vineyards website which I found very useful.
With that map, I used it to find exactly where the vineyards were on google earth and took a screenshot for all of you with labels. I think it is a bit easier to digest if you see it with the goole earth version rather than the drawing. Regardless if you haven't ever seen the original map it could be helpful.
I don't think the site is in active development anymore, but there was a guy working on cataloging a whole bunch of vineyards along the US west coast: http://www.everyvine.com/map/
Many of the vineyards are broken down to individual blocks.