[lithocarpus]

If you have a fertile abundant landscape covered in old growth forests and marshes, and then cut all the forests, put roads everywhere, and plough up the marshes for farming, the landscape then holds a lot less water and the weather becomes less stable, which can exacerbate natural fluctuations in rainfall and temperature making droughts more common and more severe.

This is effectively what happened to large parts of the middle east that were once fertile and lush. It's a trend all over the world really.

There are many ways humans can work the opposite direction to increase the ability of the land to stabilize the weather and increase hydrological robustness to mitigate droughts, e.g. regenerative agriculture or projects in asia and africa to green the desert, I don't know enough about them but it's a good idea and I hope it's executed well.

The idea that California is now "free of drought" is funny, it may be technically correct by the way the word drought is used, but it doesn't mean the underlying factors that contributed to the likelihood and severity of recent decades of drought have improved - it just means we got a lot of precipitation now, but another dry year and we'll be back in drought again.