As an engineer, I recognize a few things:

1. Droughts and floods are normal and will strike various parts of the country at different times.

2. The world will need more and more food; therefore, the USA, which has been an agricultural leader, should have a goal to produce even more food and fiber.

3. We have the capability to move water from places that have too much, e.g., lower Mississippi Valley, to places that need water, e.g., West Texas and the high plains.

I propose that we build a nationwide system of aqueducts and reservoirs to move water when we need to. Farmers and other users can pay for the projects via bonds over time from user fees.

BTW, since we have natural gas in abundance, we can use that as an energy source for the pumps required. For example, the oil deposits in Alaska often have vast amounts of methane hydrate above them. Ditto the Gulf of Mexico. With a pipeline, that will create a source of natural gas for centuries.

I think the first project is move massive amounts of water from East Texas to West Texas and the high plains. The soil is quite fertile in many areas, but there is insufficient water for irrigation. After that, the desert Southwest can be irrigated and, finally, California.

Economies thrive on PRIMARY production such as factories, farms, mines, oil, gas, and timber. Without primary production of goods, you are stuck with low and declining wages in service economies. It is NOT possible to shut down all primary production and survive economically.