How deep are water wells in Armstrong County, Texas?

Half of the home water wells drilled in Armstrong County in the last 10 years are between 215 and 301 feet deep. The median is 265 feet, based on 103 driller reports filed with the state. Drillers measured the water standing a median 182 feet below the surface (88 wells). That is deeper than the Texas median of 250 feet.

Updated every day from Texas Water Development Board driller reports. Last update: November 10, 2026, using the state file of November 9, 2026. These are depths of real wells drilled nearby, not a promise about any property. Groundwater can change over short distances and with drought. A licensed water well driller can tell you what to expect on a specific tract.

Key figures

Typical depth (middle half)
215 to 301 ft
Median depth
265 feet
Deepest 10% are past
328 feet
Water level (median)
182 feet (88 wells)
Yield (median)
17.5 gallons per minute (24% pump-tested)
Wells used
103
Period
Last 10 years
Latest report
April 13, 2026
Depth rank
121 of 245 (1 = deepest)
Confidence
Standard

How deep the wells are

Number of home wells by depth, last 10 years (or since 2001 where wells are few).

Depth (ft)Wells
100 to 1505
150 to 20010
200 to 25026
250 to 30030
300 to 35030
400 to 4501
2,000 to 5,000+1

Median depth by year

Median depth of home wells finished each year. Years with fewer than 10 wells are not shown.

YearMedian (ft)Wells
200527810
201028513
201828018
202122017
202330719
202426311

Are wells in Armstrong County getting deeper?

Armstrong County does not have enough domestic wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to compare. Read the 20-year study.

Aquifers under the county

The Texas Water Development Board maps the Ogallala, a major aquifer, at the surface (outcrop) across 68% of the county; the Dockum, a minor aquifer, under 49% of the county.

What a well costs in Armstrong County

At the median depth for Armstrong County (265 feet), a complete home well (drilling, casing, pump, pressure tank and hookup at the well) would cost roughly $9,000 to $22,500, by TerraFunded's estimate from published Texas prices. Trenching and the line to the house are extra. Get quotes from at least two licensed drillers.

Neighboring counties

Common questions

How deep do I need to drill a well in Armstrong County?

The middle half of home wells drilled there are 215 to 301 feet deep; one in ten goes past 328 feet. The depth a given tract needs depends on where it is and what layers the driller hits.

How much does a water well cost in Armstrong County?

At the median depth (265 feet), a complete well would cost roughly $9,000 to $22,500 by TerraFunded's estimate from published Texas driller prices ($25 to $60 per foot plus pump and equipment). The real price comes from a driller's quote.

How much water does a well produce in Armstrong County?

Drillers reported a median of 17.5 gallons per minute (45 wells). Only 24% of those figures come from a pump test; the rest are the driller's estimate, so treat them as a guide.

Are wells in Armstrong County getting deeper?

Armstrong County does not have enough domestic wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to compare.

How do I see the well report for a property or a neighbor's well?

Every well drilled in Texas since 2001 has a public driller's report. On this page's map, tap a well to open its official report on the state's site, or look it up by location in the TWDB viewer.

How to read these numbers

Figures cover new and replacement domestic (home) wells, from the reports licensed drillers file with the state. Read the full methodology. Download the county table (CSV).

How to cite: TerraFunded Texas Well Atlas, from Texas Water Development Board driller reports (data as of November 9, 2026). https://terrafunded.com/wells

Sources

All counties