While we're talking about Americans using anything but the metric system (https://news.ycombinator.com/item?id=49746745), how many golf courses' worth of water is Google's 10.9 billion "gallons" a year?

ChatGPT tells me

> As a historical U.S. benchmark, an average 18-hole facility had about 80.7 irrigated turf acres and used approximately 152.5 acre-feet/year—about 49.7 million gallons (188 million litres) annually.

So about 220.

But it's still, ahem, a drop in the bucket compared to the California almond industry.