Texas well grid 66-43

A 7.5-minute quadrangle of the Texas state well grid, mostly in Lavaca County and Colorado County. 102 reports, median depth 200 ft.

102Reports

200 ftMedian depth

62 ftWater at

70 gpmMedian yield

What you will drill through in grid 66-43

Logged in state well grid 66-43, by depth. The figure is how many wells hit it.
Depth, ft	What was logged there
0–25 ft	Clay 53, Sand 41, Top Soil 24, Surface 12, Surface Soil 9, Yellow Clay 6
25–50 ft	Clay 31, Sand 14, Gravel 4, Brown Sand-Sandstone 3, Sand, Clay 2, Sandstone 2
50–100 ft	Clay 41, Sand 21, Sand-Sandstone 6, Clay-Sandstone 5, Sandstone 5, Red Clay 5
100–200 ft	Clay 47, Sand 37, Shale 8, Rock 8, Ft. Sand 3, Brown Clay 2
200–300 ft	Sand 13, Clay 12, Shale 2, Coarse Sand 4, Sandstone 2, Rock 2
300–500 ft	Clay 6, Sand 5, Shale 2, Gravel 2, Sand & Gravel 2, Clay/Sand Streaks 1
500–1000 ft	Clay 6, Sand 5, Gravel 2, Shale 2, Clay/Sand Streaks 1, Broken Sand 1

Who drills here

Licensed firms in state well grid 66-43, busiest first.
Firm of record	Wells	Median depth, ft	Median yield, gpm	Years
CHANDLER DRILLING INC	32	156	60	2004–2026
Burleson Services, Inc.	10	215	90	2004–2009
Crowell Drilling Company, Inc.	7	810	20	2011–2021
Friedel Drilling Company	6	147	80	2007–2017
Everett Carroll Water Well Service	6	220	80	2005–2008
Joe Ferguson Water Well Drilling, Inc.	5	220	—	2007–2018
J & S Drilling, LLC	3	240	55	2017–2020
Maresh Drilling Co., Inc.	3	200	70	2015–2019
leeper w.w.	3	155	30	2009–2013
Joe Ferguson Drilling, Inc.	3	320	—	2004–2005
Kight Water Well Service	2	248	60	2021–2022
A C Water Well Serv.	2	285	—	2016
Cady's Water wells	2	200	50	2008–2013
J & S Water Wells	2	—	80	2008–2010
Vrana Well Service Inc.	2	200	—	2007
JOE FERGUSON WATER WELL DRLG. INC.	2	240	—	2006
J4 Water Works, LLC	1	240	37	2026
Texas Southern Drilling	1	185	—	2026
WB Southern Drilling LLC	1	116	45	2024
T Molina Water Well LLC	1	240	30	2022
A C Water Well Service	1	210	—	2021
Berry Water Well Service	1	200	60	2009
Neuendorff's Water Well Svc., Inc.	1	223	75	2007
Triple C. Drilling	1	180	40	2003
Everett Carroll Water Well Serv.	1	200	—	2003

What the wells are for

Purpose, and how deep each went.
Purpose	Wells	Share	Median depth, ft
Domestic	49	48.0%	160
Rig Supply	26	25.5%	220
Stock	12	11.8%	174
Industrial	9	8.8%	240
Irrigation	6	5.9%	915

By decade drilled.
Decade	Reports	Median depth, ft	Water at, ft
2000s	41	220	70
2010s	36	176	62
2020s	25	161	55

The deepest reports on file

Deepest reports in state well grid 66-43. Column one is the tracking number.
Report	Year	Depth, ft	Water at, ft	Yield, gpm	Purpose
474585	2018	955	—	—	Irrigation
395466	2015	940	—	—	Irrigation
570344	2021	915	—	—	Irrigation
250248	2011	810	34	—	Irrigation
259329	2011	650	58	—	Irrigation
495360	2018	532	97	—	Irrigation
190847	2004	402	94	75	Rig Supply
211036	2005	340	—	—	Industrial
209851	2004	320	—	—	Industrial
438744	2016	285	105	—	Domestic

Every figure here comes from a report a licensed driller filed on the day the work ended — sometimes decades ago. It describes what was found then, not what a well yields today, and it is not a statement that any well is sound, potable or still in use.

Drilling a well near grid 66-43?

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.

This grid falls in Lavaca County, Colorado County, Wharton County, Jackson County, DeWitt County.