If by "reseed" you mean that you're planting grass, I'd suggest a different alternative: not grass. Weeds aren't your biggest enemy here: drought is. Though perhaps less extreme than @Wayfaring's mulch or rocks, there are a number of alternatives that are more drought-resistant.
Consider a drought-resistant thyme or clover, as suggested in this grass-alternative lawn article. Similar alternatives and additional description in this article. The latter also includes my personal recommendation: artificial turf.
No lawn-like plant is going to tolerate no water, especially not one that has any durability for foot traffic. Artificial turf is very attractive: minimal maintenance, water capture possibilities, durable, permanent, and reasonably good looking, also.
I can't immediately find a video of the episode, Ask This Old House did an episode on a Las Vegas backyard lawn replacement that was pretty elegant. More description at Episode #1304 of Season 13 of ATOH.