Droughts are definitely a challenge for gardeners. I spent $$$$ per month on watering during our droughts. We were blessed with armadillos in the yard hunting for earthworms and tree roots from the forest behind us seeking water uprooting flagstone along the way. So I made sure I watered infrequently but very deep. It paid off. While plants just maintained in my yard, the trees in the forest were saved. Everything is thriving today. The forest to the left and right of us did not fare as well and many large oak trees did not make it. The money for water was well spent as they charge upwards of $1000 PER TREE removal here. I kept my trees, plants, and the forest as well.
I hope the drought ends on in the West soon. it is definitely worrisome.