What you want for low maintenance gardening isn't so much drought tolerant, because it's not a very dry place (especially not this year!), but native plants. Native plants are adapted to our climate and soil and so survive well here. They are also adapted to our ecosystem, so aren't easily wiped out by diseases or pests and usually are attractive to the birds and butterflies, etc that are here.
Here's a list of some hardy native perennial wildflowers. I picked ones that like full sun, since you were asking about drought tolerant, I thought you must have a pretty hot sunny area. However, being tough adaptable plants pretty much all of these will also do well in less than full sun. I also picked ones that are common, so most of them you should be able to get in any good nursery, a few you might have to order on line. They are colorful and relatively long-blooming and will give you a beautiful garden.
ONCE ESTABLISHED, these will be very low maintenance, mulch around them to keep weeds down and let them go. It is realistic to think you won't need to do much to them. But everything needs a little monitoring/ care to get started.
So here's my list: agastache (hyssop), aster, butterflyweed, coreopsis, bee balm, black eyed susan, purple coneflower, ironweed, joe pye weed, liatris (gayfeather), penstemon, obedient plant, sunflower (helianthus), yarrow.