The US Is Running Out of Water (You Can See It on a Map)

本站添加: 2026-05-12

[00:00:00]There's a part of the US that survives because of a body of water nobody can see. And in our lifetime, that water is going to run out. When it does, the map of the United States is going to redraw itself, and you can already see where.

[00:00:13]This shape underneath my hand is the Ogallala Aquifer. It sits under eight states from South Dakota down to Texas.

[00:00:19]It's one of the largest aquifers on Earth. Just about everyone who eats food in this country depends on it without knowing it exists. First, some context.

[00:00:28]More than half of all Americans live within 50 mi of a coast. Most of the rest cluster around the Great Lakes, the major rivers, and a handful of inland cities, which means there's a corridor running down the middle of the country.

[00:00:40]Eastern Montana down to West Texas, where almost nobody lives. Geographers sometimes call it the empty quarter. The reason it's empty isn't an accident. In 1878, a one-armed Civil War veteran named John Wesley Powell told Congress something they didn't want to hear. He'd surveyed the West, and he'd figured out that west of roughly the 100th meridian, annual rainfall drops below 20 in.

[00:01:04]That's the threshold for farming without irrigation. Below that line for rainfall, the land won't support agriculture the way the East does.

[00:01:12]Congress ignored him. They passed the Homestead Act, settlers poured in, and towns started popping up. And for a while, it looked like Powell was wrong.

[00:01:21]But Powell wasn't wrong. The settlers had just gotten lucky.

[00:01:26]They had found something Powell hadn't accounted for. They'd found the water underneath. The Ogallala is hard to picture because we don't see it, but imagine an underground ocean. Fattest here in Nebraska, narrowing up into South Dakota, and tapering down through Kansas, Oklahoma, and Eastern New Mexico, and the Texas Panhandle. Eight states, roughly 175,000 sq mi. In some places, it's 1,000 ft thick. In others, 50. And here's the thing nobody tells you about this water.

[00:01:58]It's not really being refilled. It accumulated over tens of thousands of years from sediment that eroded off the Rocky Mountains and water that slowly filled the spaces between the grains.

[00:02:08]It's ancient water. Rain falling on the High Plains today mostly evaporates or runs off. Only a tiny fraction reaches the aquifer averaging less than 1 in per year across the region. We're pulling it out at feet per year. Once farmers figured out how to get to it and after diesel pumps and center pivot irrigation showed up in the mid-20th century the High Plains exploded. Corn, wheat, cotton, cattle.

[00:02:35]The Ogallala turned the driest, emptiest part of the country into one of the most productive agricultural regions on Earth. About 30% of all the irrigated cropland in the US sits over this aquifer. It supplies roughly a quarter of the water used for agriculture in this country. Add it up and you're looking at about 20% of the country's corn, wheat, cotton, and cattle coming from this one underground reservoir.

[00:03:00]Towns followed the water.

[00:03:02]Garden City, Kansas, Liberal, Kansas, Lubbock and Amarillo, Texas.

[00:03:08]Hundreds of smaller places, they exist because somebody figured out how to pull water out of the ground.

[00:03:14]For about 80 years this looked like a miracle. Powell's warning had been overruled by engineering.

[00:03:21]Except that engineering was running on borrowed time and the bill is coming due. Here's the timeline. In 1940 when industrial pumping really started, the aquifer was nearly full, untouched for tens of thousands of years. By 1980 water levels in parts of the south had dropped 50 ft. Farmers had to drill deeper, install bigger pumps. The cost of pulling water up started climbing. By 2020 parts of the southern Ogallala had dropped well over 100 ft. In some areas of western Kansas, the Texas Panhandle, and eastern New Mexico, more than 60% of the original water was gone.

[00:03:57]Wells started going dry.

[00:04:00]Not metaphorically, but literally.

[00:04:02]Farmers would turn on the pump and air would come out. Western Kansas, some counties have already lost most of their groundwater. The Kansas governor has said parts of western Kansas don't have 25 years of water left. Texas Panhandle, cotton farmers who pumped for three generations are watching their last wells fail.

[00:04:22]A recent University of Texas projection estimates up to 70% of the Texas Panhandle could become unusable for irrigation within 20 years if current pumping continues. Towns are losing population.

[00:04:35]Schools are closing. Here's what's strange about this. John Wesley Powell saw it coming.

[00:04:41]Not the aquifer specifically, he didn't know it was there, but he understood the underlying reality. This land cannot support intensive settlement on its own terms. Whatever made it temporarily habitable was going to be temporary. The aquifer was the temporary thing, and we used it up in less than a century. A Texas State University study projects that under current use, 69% of the Kansas Ogallala will be gone by 2060.

[00:05:09]69% of one of the largest freshwater reserves on Earth in about 35 years. Not all of the aquifer is on the same trajectory.

[00:05:18]Some of the northern sections, especially under Nebraska, are in better shape and recharge a little faster.

[00:05:24]But most of the south, the the part we built corn and cotton and cattle on, is going to be exhausted within the lifetime of the people watching this video. Here's what the High Plains are projected to look like by 2060. Some of these zones are gone or unusable for irrigation. The agricultural map of the country starts to lose its middle.

[00:05:44]Look at what's happened to on this board.

[00:05:46]The aquifer is smaller. Several towns are erased.

[00:05:50]The crops we wrote down are gone, and the corridor line I drew at the start, it's still there. It never went anywhere.

[00:05:58]Powell's line is just reasserting itself. The empty quarter was empty for a reason. We filled in part of it for 80 years using water that took tens of thousands of years to accumulate.

[00:06:08]And now the map is redrawing itself back to something closer to what Powell described in 1878. This is going to mean things. It's going to mean food prices.

[00:06:18]It's going to mean migration.

[00:06:20]Towns emptying, kids moving to cities, farms consolidated or failing.

[00:06:26]It's going to mean rethinking what the middle of the country is for.

[00:06:30]And some of this is already happening.

[00:06:31]The map we grew up looking at, the one with the breadbasket in the middle, isn't permanent. It was a moment. We're living at the end of that moment. I sell maps for a living. We make them in a workshop about 30 ft from where I'm standing. And one of the things you learn doing this is that maps aren't snapshots. They're snapshots of a snapshot. The country we live in is in motion, and the map is always catching up. The Ogallala isn't on most maps. The aquifer underneath the empty quarter, it doesn't show up in any atlas you bought as a kid.

[00:07:03]But it's the thing that determined what the middle of the country became, and now what it's becoming next. Powell saw it before there was a country here to ignore him. We're about to find out he was right all along.