texas-water-wells

Water wells in Grayson County, Texas

2,230 well reports on file. The median well here was taken to 100 ft and struck water at 135 ft — against 180 ft and 80 ft across Texas.

2,230Reports
100 ftMedian depth
135 ftWater at
15 gpmMedian yield

What you will drill through in Grayson County

Logged in Grayson County, by depth. The figure is how many wells hit it.
Depth, ftWhat was logged there
0–25 ftClay 359, Topsoil 326, Yellow Clay 215, Surface 198, Shale 179, Gray Shale 136
25–50 ftShale 126, Gray Shale 88, Sand 55, Black Shale 28, Blue Shale 21, Shale And Sand 16
50–100 ftSand 121, Shale 88, Gray Shale 41, Rock 28, Sand And Shale 21, Blue Shale 20
100–200 ftSand 327, Shale 185, Gray Shale 81, Rock 61, Sand And Shale 43, Blue Shale 41
200–300 ftSand 323, Shale 193, Gray Shale 95, Sand And Shale 47, Shale And Sand 37, Black Shale 32
300–500 ftSand 283, Shale 190, Gray Shale 68, Shale And Sand 58, Sand And Shale 61, Black Shale 25
500–1000 ftSand 161, Shale 106, Sand And Shale 34, Shale And Sand 32, Gray Shale 22, Sandy Shale 10
1000–5000 ftSand 17, Shale 19, Sand And Shale 7, Dark Grey Shale 1, Rock 2, Gray Shale 4

The rock column here is what drillers wrote down, layer by layer, in their own words — 5,345,462 layers across 707,856 wells. It is not a geological survey: two drillers may call the same clay by two names, and this site does not correct them.

Who drills in Grayson County

Licensed firms in Grayson County, busiest first.
Firm of recordWellsMedian depth, ftMedian yield, gpmYears
A.L. Moser Drilling, Inc.334400152003–2020
FAULKNER & SON178335202006–2026
Environmental Logistics Company, LLC17513—2017–2025
MagnaCore Drilling & Environmental Services15216—2003–2021
Sunbelt Industrial Services13318—2007–2023
Roddy Qualls Environmental Drilling9215—2016–2023
WEST Drilling8920—2016–2025
Bassett Drilling80200152005–2025
W.E.S.T. Drilling5525—2001–2013
Total Support Services4920—2002–2019
Axis Drilling48340242013–2025
Double D Drilling37360172011–2025
WALKER HILL ENVIRONMENTAL INC3658—2014–2023
Erwin Water Well Drilling33300202002–2025
Strittmatter Irrigation33350602003–2013
Strata Core Services, LLC3019—2011–2017
THI WATER WELL299381142009–2026
Faulkner and Son29319202003–2015
Vortex Drilling, Inc.245—2016–2019
Prospector Drilling and Tool Co., Inc.2441—2004
H/ET2281—2022–2023
Eagle Remediation2223—2022–2023
Earth Tech21460242005–2017
Talon Drilling, LP1725—2004–2009
SLA165—2004–2012

What the wells are for

Purpose, and how deep each went.
PurposeWellsShareMedian depth, ft
Domestic82136.8%340
Monitor58526.2%23
Environmental Soil Boring49122.0%11
Irrigation1406.3%350
Test Well381.7%25
Stock331.5%400
Public Supply321.4%1,440
Rig Supply241.1%560
By decade drilled.
DecadeReportsMedian depth, ftWater at, ft
2000s603240140
2010s94838110
2020s67935140

The deepest reports on file

Deepest reports in Grayson County. Column one is the tracking number.
ReportYearDepth, ftWater at, ftYield, gpmPurpose
22408020052,556736250Public Supply
68720820242,550854566Public Supply
65460920232,520835400Public Supply
67953120242,518866640Public Supply
57212320202,500846335Public Supply
34608820122,500884610Public Supply
65622320232,407——Irrigation
7527220032,400787350Public Supply
50149020192,075——Irrigation
64892120232,030——Irrigation

Every figure on this site is a median, never an average. On reported yield the average is twice the median, because a handful of entries are typing errors — the largest reads 2,200,100 gallons per minute against 30,078 for the next one. Yields above 3,000 gpm (136 wells, 0.045%) and depths beyond 5,000 ft (103 wells, 0.016%) are kept in the file, marked, and left out of the medians.

Drilling a well in Grayson County?

Depth is only half the quote. What it costs depends on the rock, the casing and the pump. Tell us where and we pass the request to licensed Texas drillers.

We are nobody's agent and have no arrangement with any firm today. What we do with this.

Counties with a comparable number of reports

A sliding window, not a ranking. Every county.