Lake Medina DROPS To 3.9% In 72 Hours – First American City To Run Out Of Water

When Medina Lake Falls Silent, an Entire Region Feels the Loss

For generations, Medina Lake represented security in South Texas.

Created by a massive concrete dam more than a century ago, the reservoir was designed to capture the unpredictable waters of the Medina River and turn them into something dependable—water for farms, communities, and the future.

Now, that promise is being tested in extraordinary fashion.

The reservoir has been reduced to a tiny fraction of its former volume.

The account places its current storage at roughly 3.9%, or about 9,870 acre-feet, compared with more than 254,000 acre-feet at full capacity.

The water surface is described as sitting around 86 feet below a full pool.

The numbers are difficult to visualize until they are translated into landscape.

Where there was once an enormous body of water, stretches of cracked mud now dominate the basin.

The old waterline remains visible high above the diminished channel, offering a stark reminder of how dramatically the landscape has changed.

But the most alarming part is not simply how low the lake has fallen.

It is what happens when a reservoir falls below the point where it can release water naturally.

That condition is known as Deadpool.

In April 2025, officials confirmed that Medina Lake had reached Deadpool at roughly 2.5% of capacity.

At that stage, water could no longer flow normally out of the reservoir through the dam system.

The lake was no longer functioning as the flowing water source its surrounding infrastructure had been designed around.

The decline had not happened overnight.

The reservoir had reportedly been falling since 2020, before a prolonged drought intensified the crisis.

By September 2022, storage had fallen dramatically.

By February 2023, it was below 6% of capacity.

In June 2024, the lake reached approximately 2.4%, described as its lowest level in at least six decades.

Then came another descent.

By April 2025, the reservoir had entered Deadpool.

The level reportedly fell to around 1.

9% the following month, approaching the lowest point in the lake’s recorded history.

A devastating flood later offered a brief glimpse of what recovery might look like.

On July 4, 2025, catastrophic flooding struck parts of the Texas Hill Country, killing at least 139 people across central Texas as described in the narrative.

The Medina River surged, and the reservoir gained roughly ten feet, climbing from about 2.5% to approximately 5.2% full.

But the recovery could not hold.

By December, the level had slipped to roughly 4.8%.

By May, it was around 3.8%.

The water had begun retreating again.

The episode demonstrated the brutal difference between a flood and sustained recovery.

A massive rainfall event can send an enormous amount of water downstream, but a reservoir devastated by years of drought may need repeated wet seasons to rebuild its reserves.

That is particularly important because Medina Lake is not an isolated body of water.

Its relationship with the underground Edwards Aquifer makes its decline a regional concern.

The lake and the Medina River system contribute water that seeps through the limestone and helps recharge the aquifer.

The narrative cites a U.S. Geological Survey water-budget study estimating average seepage from the Medina and Diversion Lake system at approximately 61,300 acre-feet per year—roughly 9% of the Edwards Aquifer’s total recharge.

The Edwards Aquifer, meanwhile, serves as a major public water source for more than 1.85 million people in Bexar County.

That creates a connection many residents far from the dried shoreline might never consider.

A person turning on a faucet in San Antonio may be drawing from the same broader water system affected by conditions at a reservoir miles away.

The consequences also extend directly into agriculture.

Below the dam, the Medina River can no longer provide the flows that downstream systems were designed to receive.

Diversion Lake, several miles downstream, depends on those flows.

From there, irrigation canals were constructed to carry water toward agricultural communities including Castroville, LaCoste, Natalia, and Devine.

The narrative describes roughly 33,000 acres of farmland associated with the irrigation district.

When the reservoir cannot provide water, those canals cannot perform their intended function.

The crisis therefore moves through several layers: the lake, the river, the irrigation system, the farms, and the aquifer.

And above it all stands the dam.

Medina Dam was constructed between 1911 and 1913.

The enormous concrete structure was approximately 164 feet high and 1,580 feet long, requiring hundreds of thousands of cubic yards of concrete and a workforce of roughly 1,500 people.

At the time, it represented an extraordinary engineering achievement.

Its purpose was straightforward: capture water when it was available so the region could survive when rainfall disappeared.

More than a century later, the structure still stands.

The problem is that there is almost nothing left for it to hold.

The human consequences are becoming visible along the shoreline.

Homes were constructed around the assumption that a lake would remain outside their windows.

When the water disappears, waterfront property can become something fundamentally different from what buyers originally imagined.

One homeowner described the difficulty of selling a large house when the lake had effectively dried up.

Another longtime resident summarized the psychological transformation with a simple sentiment: people eventually get used to it.

That may be one of the most unsettling aspects of the crisis.

A disaster does not always arrive as one dramatic moment.

Sometimes it becomes normal gradually.

Residents stop expecting the water to return.

Businesses adapt.

Property values change.

Recreation disappears.

Farmers search for alternatives.

Communities learn to function around an absence that once seemed temporary.

Even new development can begin adapting to the dry landscape.

The narrative describes a lakeside resort opening while the reservoir remained only a few percentage points full.

Its owners emphasized that memories could still be created whether the lake stood at 2%, 10%, or 100%.

That sentiment captures a region trying to continue living while waiting for nature to reverse the situation.

But nature cannot be scheduled.

The officials monitoring the reservoir can measure every foot, every acre-foot, and every change in storage.

Scientists can calculate recharge.

Agencies can track drought conditions.

Engineers can study the infrastructure.

None of those actions can manufacture rainfall.

The account’s central warning is therefore larger than a single lake.

Medina Lake was built as a solution to drought.

Yet a century later, prolonged dryness has pushed it into a condition where the historic dam can no longer perform the role for which it was created in the ordinary way.

At roughly 3.9% full, the reservoir is not merely experiencing a bad season.

It represents the visible edge of a much larger water challenge.

A lake community is learning what happens when the lake disappears before the houses do.

Farmers are confronting what happens when irrigation canals run dry.

And a growing metropolitan area is reminded that its water system depends on an intricate network extending far beyond city limits.

The cracked lakebed tells only part of the story.

The more consequential story is happening underground, downstream, and inside the homes and farms connected to a water system that depends on rainfall eventually returning.

Until then, the enormous dam remains where it has stood for more than a century—massive, historic, and nearly empty behind its walls.

And that may be the most haunting image of all: a structure built to defeat the uncertainty of drought, standing over a reservoir that has almost nothing left to give.