Not All Wells Are Created Equal: What This Drought Really Means for Your Water Supply

If you've driven around the 4-States lately, you've probably noticed it: brown pastures, low creeks, and a lot of conversation about how dry it's gotten. What's happening isn't your imagination. Southwest Missouri, Northeast Oklahoma, and Northwest Arkansas are in the middle of what climatologists call a "flash drought", a drought that develops fast, over a matter of weeks rather than months. Aside from a heavy rain event in early-to-mid June, our area has seen next to no meaningful rainfall since. In the past 30 days, most locations across the 4-States received less than four inches of rain, some spots less than an inch, putting us well under 75% of normal for the period.

As of the most recent U.S. Drought Monitor update, McDonald County has areas rated at D3 (Extreme Drought), with Severe (D2) drought reintroduced across McDonald and Newton Counties, and Jasper Counties. That's serious enough that McDonald County recently qualified for USDA disaster assistance for area farmers and ranchers, with Newton and Jasper Counties trending in the same direction. Just across our state lines, Delaware and Ottawa Counties, Oklahoma, and Benton County, Arkansas, are dealing with the same weather system.

Naturally, when people see conditions like that, the first thing they think is: "Is my well going to run dry?"

That's the question we get asked constantly right now. And the honest answer is: it depends entirely on what kind of well you have, and what's actually underneath your property, which is something most people, and most news coverage, get wrong.

The Myth: "Drought Means Wells Go Dry"

It's an understandable assumption. No rain, no water, right? But groundwater in our area doesn't behave like a rain barrel, and understanding why requires understanding what's actually going on beneath our feet.

How Our Aquifer System Actually Works

Southwest Missouri, northeast Oklahoma, and northwest Arkansas all sit on the same geology: the Ozark Plateaus aquifer system. It's not one big underground lake, it's two distinct aquifers, stacked on top of each other, separated by a layer of rock that acts as a barrier between them.

The upper layer, the Springfield Plateau aquifer- is made up of chert and limestone with solution-enlarged openings and cavernous zones. This is karst terrain: rainwater picks up a slight acidity as it filters through soil and leaf litter, and over thousands of years that acidic water dissolves the limestone and dolomite, carving out sinkholes, caves, losing streams, and underground passages. Water in this upper aquifer moves fast and reacts quickly to rainfall, sometimes within days, because it's traveling through those solution channels rather than filtering slowly through solid rock. This is also the aquifer that feeds most of our natural springs, some of which can discharge thousands of gallons per minute when conditions are wet. Wells completed in this upper aquifer typically produce anywhere from a few gallons per minute up to 80 or more, but because it's so directly connected to surface conditions, it's also the first thing to feel a drought.

Below that sits the Ozark confining unit- a layer of much less permeable rock that acts as a lid, slowing the downward movement of water. Beneath the confining unit is the Ozark aquifer (which includes the Roubidoux aquifer), made up of dolomite and sandstone formations several hundred feet thick. Water down here moves through fractured rock rather than open karst channels, which means it moves far more slowly, but it also means this aquifer isn't reacting to what happened in the sky last week. It's a deep, slow-moving reserve that's largely buffered from short-term swings in rainfall.

This is exactly why the type of well you have matters so much during a drought like this one. Older wells, especially ones drilled decades ago near a spring or completed above that confining layer, are essentially drawing from the upper, karst-connected aquifer, and behave more like surface water than most people realize. State regulations now require new wells to be completed down into the lower Ozark aquifer, primarily for water quality and safety reasons (karst terrain is also more vulnerable to surface contamination reaching the water table quickly). The side benefit is that these modern, deeper wells are remarkably resilient to short-term drought, because they're drawing from a reserve that isn't tied to this month's weather.

So right now, across our service area, we're seeing almost exactly what that geology would predict: older, shallow, spring-connected wells are showing real strain, while modern wells completed into the deeper aquifer are holding up fine as far as raw water availability goes.

The Real Risk to Modern Wells Isn't the Drought, It's the Demand

Here's the part that surprises people: the biggest issue we're seeing in deep aquifer wells right now isn't a shortage of water underground. It's strain from increased pumping, more watering of gardens, yards, and fields during hot, dry stretches, which is exactly when people use the most water.

This mostly shows up in older wells that were originally drilled to produce less than 20 gallons per minute (GPM). Over years, the small cracks and crevices in the rock that feed water into the well gradually choke off with mineral encrustation. The well doesn't necessarily "run dry", it just makes less water than it used to. Under normal daily use, you might never notice. But when demand spikes during a drought, that reduced capacity gets exposed fast.

This is exactly why we push for a target production capacity of 20+ GPM on every new well we drill. It's not overkill, it's the margin that keeps a well stable when conditions like this hit.

A Separate Issue Worth Knowing About

It's worth mentioning a completely different water story playing out nearby, just so it doesn't get confused with what we've covered here. In Benton County, Arkansas, several cities we service, including Gravette, Decatur, Gentry, Bella Vista, and Pea Ridge; get their water through the Benton-Washington Regional Public Water Authority. The Authority has been public about the fact that their current challenge is the ability to pump and store enough water fast enough during periods of peak demand and rapid regional growth, an infrastructure capacity question, unrelated to the well and aquifer conditions described above.

What Homeowners Should Actually Watch For

Whether you're in McDonald County (Anderson, Pineville, Noel, Southwest City, Goodman), Newton County (Neosho, Seneca, Granby, Diamond), or across the state line into Delaware and Ottawa Counties, Oklahoma (Grove, Jay, Wyandotte, Fairland), the questions to ask yourself are the same:

- Do you know what kind of well you have, and how it was completed? If it's an older, shallow, or spring-fed well, drought conditions like this are a genuine risk, plan accordingly. Options don’t have to be limited to just a new well. Holding tanks systems can be a great alternative in some situations to extend the capacity of your older well.

- Is your well an older low-producing well (under 20 GPM)? If so, heavy outdoor watering during a dry stretch like this is when you're most likely to notice reduced water pressure or a well that can't keep up.

- Are you seeing sudden pressure drops, sputtering faucets, or a pump that's cycling more than usual? That's often a sign of a well nearing its production limit under increased demand, not necessarily a well "going dry," but a well being pushed past what it can currently deliver.

If any of that sounds familiar, it's worth having a well inspected before a minor issue turns into a summer without water. Understanding which aquifer your well actually draws from is the difference between an unnecessary panic and an informed decision.