How deep are water wells in Deaf Smith County, Texas?
Half of the home water wells drilled in Deaf Smith County in the last 10 years are between 264 and 364 feet deep. The median is 330 feet, based on 185 driller reports filed with the state. Drillers measured the water standing a median 234 feet below the surface (133 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)
- 264 to 364 ft
- Median depth
- 330 feet
- Deepest 10% are past
- 381 feet
- Water level (median)
- 234 feet (133 wells)
- Yield (median)
- 16 gallons per minute (41% pump-tested)
- Wells used
- 185
- Period
- Last 10 years
- Latest report
- October 13, 2026
- Depth rank
- 104 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 150 | 6 |
| 150 to 200 | 12 |
| 200 to 250 | 22 |
| 250 to 300 | 25 |
| 300 to 350 | 44 |
| 350 to 400 | 61 |
| 400 to 450 | 15 |
Median depth by year
Median depth of home wells finished each year. Years with fewer than 10 wells are not shown.
| Year | Median (ft) | Wells |
|---|---|---|
| 2004 | 312 | 13 |
| 2005 | 312 | 14 |
| 2007 | 290 | 13 |
| 2008 | 335 | 19 |
| 2009 | 350 | 13 |
| 2011 | 310 | 16 |
| 2012 | 320 | 19 |
| 2013 | 368 | 15 |
| 2014 | 316 | 12 |
| 2015 | 288 | 22 |
| 2016 | 300 | 14 |
| 2017 | 340 | 11 |
| 2018 | 355 | 26 |
| 2019 | 315 | 22 |
| 2020 | 324 | 16 |
| 2021 | 338 | 16 |
| 2022 | 335 | 21 |
| 2023 | 351 | 15 |
| 2024 | 300 | 27 |
| 2025 | 315 | 16 |
| 2026 | 266 | 14 |
Are wells in Deaf Smith County getting deeper?
Home well depth in Deaf Smith County has not changed meaningfully: the median was 318 feet in 2003 to 2007 and 330 feet in 2021 to 2025 (a difference under 10% or within the margin of error). The water level has not changed meaningfully (220 feet then, 220 feet now). 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 96% of the county; the Dockum, a minor aquifer, under 100% of the county.
What a well costs in Deaf Smith County
At the median depth for Deaf Smith County (330 feet), a complete home well (drilling, casing, pump, pressure tank and hookup at the well) would cost roughly $11,000 to $26,500, 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
- Castro County: median 378 ft
- Oldham County: median 322 ft
- Parmer County: median 406 ft
- Potter County: median 297 ft
- Randall County: median 344 ft
Common questions
How deep do I need to drill a well in Deaf Smith County?
The middle half of home wells drilled there are 264 to 364 feet deep; one in ten goes past 381 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 Deaf Smith County?
At the median depth (330 feet), a complete well would cost roughly $11,000 to $26,500 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 Deaf Smith County?
Drillers reported a median of 16 gallons per minute (22 wells). Only 41% of those figures come from a pump test; the rest are the driller's estimate, so treat them as a guide.
Are wells in Deaf Smith County getting deeper?
Home well depth in Deaf Smith County has not changed meaningfully: the median was 318 feet in 2003 to 2007 and 330 feet in 2021 to 2025 (a difference under 10% or within the margin of error). The water level has not changed meaningfully (220 feet then, 220 feet now).
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
- Texas Water Development Board, Submitted Driller's Reports database (file of 2026-11-10)
- U.S. Census Bureau, 2024 cartographic boundary file, counties (1:500,000) (file of 2025-04-10)
- Texas Water Development Board, major aquifers (updated December 2006) (file of 2007-01-03)
- Texas Water Development Board, minor aquifers (updated December 2017) (file of 2017-12-15)
- TWDB well report viewer