Texas well grid 81-01

A 7.5-minute quadrangle of the Texas state well grid, mostly in Matagorda County. 500 reports, median depth 155 ft.

500Reports

155 ftMedian depth

35 ftWater at

80 gpmMedian yield

What you will drill through in grid 81-01

Logged in state well grid 81-01, by depth. The figure is how many wells hit it.
Depth, ft	What was logged there
0–25 ft	Clay 155, No Recovery 67, Sand 60, Red Clay 42, Top Soil 38, Concrete 34
25–50 ft	Sand 43, Clay 45, Red Clay 14, Fine Sand 4, Yellow Clay 4, Fine Red Sand 3
50–100 ft	Sand 87, Clay 67, Red Clay 15, Sand And Gravel 6, Sand .006 4, Sand .005-.006 2
100–200 ft	Clay 124, Sand 135, Clay Td 17, Red Clay 12, Blue Clay 11, Sand And Gravel 7
200–300 ft	Clay 42, Sand 39, Blue Clay 6, Clay Grey 3, Red Clay 3, Sandy Clay 2
300–500 ft	Sand 101, Clay 57, Clay Td 36, Blue Clay 10, Red Clay 8, Coarse White Sand 5
500–1000 ft	Sand 7, Clay 5, Clay Td 5, Sand .006 1, Sand & Clay 1, Clay/Sand 1
1000–5000 ft	Clay 1, Sand 1

Who drills here

Licensed firms in state well grid 81-01, busiest first.
Firm of record	Wells	Median depth, ft	Median yield, gpm	Years
Envirotech Drilling Services LLC	92	8	—	2017–2026
Goolsby Water Well Service LLC	56	420	50	2015–2026
Finch Water Well	47	435	60	2001–2025
Vortex Drilling, Inc.	32	20	—	2009–2015
AQUA WATER WELL CO.	22	180	80	2007–2015
Felder Water Well & Pump Service, LLC	20	197	300	2013–2024
BEST DRILLING SERVICES, INC.	20	15	—	2004–2022
Wells Water Well Company	20	450	20	2002–2008
Mathers Environmental Drilling Inc.	16	15	—	2008–2025
RONNIE GOOLSBY WATER WELL	14	410	60	2002–2015
RONNIE GOOLSBY WATER WELL SERVICE	14	385	80	2004–2013
Advanced Drilling Systems, Inc.	13	11	—	2015–2017
Burleson Services, Inc.	12	190	100	2004–2008
Subterra Environmental Services, LLC.	9	25	—	2019
Felder Water Well	9	433	150	2010–2013
Chaffin Water Well Service	8	200	300	2003–2024
J&S WATER WELLS	8	250	80	2006–2023
Ellis Drilling and Service Co.	8	170	350	2009–2016
Finch Water Well Service	8	452	60	2004–2008
O'Day Drilling Company, Inc.	7	390	80	2007–2025
Master Monitoring Services, Inc.	6	12	—	2006
City Survey	5	20	—	2015–2018
Goolsby Water Well	5	304	60	2001–2013
Chaffin Water Wells	4	181	75	2012–2019
GOOLSBY WW	4	455	70	2013

What the wells are for

Purpose, and how deep each went.
Purpose	Wells	Share	Median depth, ft
Domestic	155	31.0%	440
Environmental Soil Boring	104	20.8%	8
Monitor	92	18.4%	20
Irrigation	59	11.8%	185
Stock	38	7.6%	165
Rig Supply	23	4.6%	180
Industrial	19	3.8%	250
Test Well	6	1.2%	15

By decade drilled.
Decade	Reports	Median depth, ft	Water at, ft
2000s	128	180	35
2010s	189	170	25
2020s	183	25	60

The deepest reports on file

Deepest reports in state well grid 81-01. Column one is the tracking number.
Report	Year	Depth, ft	Water at, ft	Yield, gpm	Purpose
693776	2025	1,300	77	2,023	Public Supply
639404	2023	730	72	—	Irrigation
549985	2020	685	50	—	Irrigation
341780	2013	643	22	150	Irrigation
586555	2021	640	80	—	Domestic
686502	2025	605	70	100	Industrial
571858	2021	585	70	40	Domestic
219947	2010	564	15	—	Irrigation
596251	2021	552	50	—	Domestic
546730	2020	545	45	100	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 81-01?

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 Matagorda County.