Texas well grid 65-23

A 7.5-minute quadrangle of the Texas state well grid, mostly in Harris County and Colorado County. 2,038 reports, median depth 25 ft.

2,038Reports

25 ftMedian depth

14 ftWater at

60 gpmMedian yield

What you will drill through in grid 65-23

Logged in state well grid 65-23, by depth. The figure is how many wells hit it.
Depth, ft	What was logged there
0–25 ft	Clay 119, No Recovery 111, Concrete 109, Silty Clay, Drk. Gray 60, Clay, Red 40, Asphalt 50
25–50 ft	Clay, Red 31, Clay 21, Clay, Reddish Brown 17, Clay, Gray 10, Clayey Silt To Sand Silt, Yellowish-Red With Clay Seams 17, Clay, Yellowish-Red 17
50–100 ft	Clay 16, Sand 16, Red, Silty Sand, Wet 2, Clay, Red 4, Sand & Gravel 4, Firm, Red Clay Moist 2
100–200 ft	Clay 17, Sand 14, Sand-Tan-Fine 1, San 2, Soft, Gray, Silty Sand, Wet 2, Soft, Gray Sand, Wet 2
200–300 ft	Clay 11, Sand 12, Sand/Clay 2, Broken Sand & Sandy Shale 1, Shale 1, Very Fine To Medium Sand 1
300–500 ft	Sand 24, Clay 15, Sandy Clay 2, Sand/Gravel 1, Clay/Sand 2, Sand Gray .008 1
500–1000 ft	Sand 3, Clay 2, Shale 1, Clay/Sand 2, Sand/Clay 2, Sandy Shale & Shale 1
1000–5000 ft	Clay 2, Sand 1, Sand/Clay 1, Gravel/Sand 1, Clay/Sand Streaks 1

Who drills here

Licensed firms in state well grid 65-23, busiest first.
Firm of record	Wells	Median depth, ft	Median yield, gpm	Years
BEST DRILLING SERVICES, INC.	474	25	10	2004–2025
Envirotech Drilling Services LLC	342	20	—	2011–2026
Vortex Drilling, Inc.	174	15	—	2010–2018
Advanced Drilling Systems, Inc.	170	25	—	2001–2023
Vortex Drilling Partners, LP	99	15	—	2019–2022
Mathers Environmental Drilling Inc.	92	28	—	2004–2025
Master Monitoring Services, Inc.	91	25	—	2005–2007
Alpine Field Services	87	20	—	2004–2014
Van and Sons Drilling Service	36	35	—	2014–2024
Envirotech Drlling Services	29	—	—	2014
Groundwater Monitoring Inc.	25	20	—	2006
Prospector Drilling and Tool Co., Inc.	24	52	—	2003–2004
Advanced Drillig Systems, Inc.	23	—	—	2006
Fugro Geosciences, Inc.	21	38	—	2001–2006
Alliance Maintenance & Services, Inc.	19	21	—	2010–2013
Petra Enviromental Inc.	19	24	—	2005
Soltek LLC	16	20	—	2015–2022
O'Day Drilling Company, Inc.	14	409	60	2005–2025
Remedial Operations Group, Inc.	14	31	—	2004–2008
dba Universal Drilling Services	14	22	—	2003–2005
Cascade Drilling	13	45	—	2024–2025
City Survey	13	25	—	2012–2019
Gearen Drilling	13	25	0	2012–2016
MagnaCore Drilling & Environmental Services	13	20	—	2006–2007
Hydrex Environmental, Inc.	13	—	—	2003–2007

What the wells are for

Purpose, and how deep each went.
Purpose	Wells	Share	Median depth, ft
Monitor	1,267	62.2%	25
Environmental Soil Boring	600	29.4%	16
Test Well	51	2.5%	26
Other	41	2.0%	40
Injection	27	1.3%	21
Domestic	14	0.7%	390
Public Supply	13	0.6%	467
De-watering	10	0.5%	63

By decade drilled.
Decade	Reports	Median depth, ft	Water at, ft
1970s	1	730	—
2000s	669	25	15
2010s	895	20	12
2020s	473	25	17

The deepest reports on file

Deepest reports in state well grid 65-23. Column one is the tracking number.
Report	Year	Depth, ft	Water at, ft	Yield, gpm	Purpose
356698	2014	1,320	168	1,708	Public Supply
273776	2011	1,170	175	1,725	Public Supply
623118	1976	730	—	—	Other
13524	2002	540	80	80	Domestic
151348	2005	530	130	150	Irrigation
542684	2020	498	117	100	Public Supply
695497	2025	495	130	—	Public Supply
279479	2012	485	130	60	Domestic
7689	2002	484	145	—	Irrigation
175101	2005	470	131	150	Public Supply

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 65-23?

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 Harris County, Colorado County, Austin County, Matagorda County.