The natural range of Redwoods corresponds to where they have summer fog, they get a lot of their moisture through the leaves. Might be hard to grow in davis successfully Maybe Sequoias might do better as their range is not defined by fog. Dont know. I live in the north bay and see a lot of water stressed Redwoods and we do get summer fog but not enough.

Aren't there redwoods near Putah Creek / Mrak?

My son lives in Elk Grove and has 4 or 5 big beautiful red woods. Its true in nature they get a lot of their water through transpiration but from what I’ve seen when used in landscaping they survive fine from just being itrigated.

Yep, we already have a redwood grove on campus- here's a screen grab of google maps

Yes, they can grow just fine in less than ideal places like Elk Grove or Davis but they need help- shade when the are young, plenty of water, and 3 tree clusters will help them grow better. I apologize for so many post about redwood trees in a football forum, I'm a redwood nerd-lol.