Texas well grid 66-30

A 7.5-minute quadrangle of the Texas state well grid, mostly in Colorado County and Wharton County. 259 reports, median depth 144 ft.

259Reports

144 ftMedian depth

36 ftWater at

75 gpmMedian yield

What you will drill through in grid 66-30

Logged in state well grid 66-30, by depth. The figure is how many wells hit it.
Depth, ft	What was logged there
0–25 ft	Clay 62, Top Soil 62, Sand & Gravel 54, Topsoil 49, White Clay 27, Sand 26
25–50 ft	Clay 34, Sand 18, Red Clay 15, Sand & Gravel 14, Gravel 11, White Clay 7
50–100 ft	Sand 35, Clay 25, Sand & Gravel 22, White Clay 19, Rock 18, Red & White Clay 14
100–200 ft	Sand 49, Rock 36, Clay 36, White Clay 24, Sand & Gravel 21, Sand & Rock 16
200–300 ft	Sand 25, Clay 18, Rock 6, Sand & Rock 3, White Clay 4, Sand & Clay 4
300–500 ft	Sand 18, Clay 21, Sand & Rocks 7, Clay & Rocks 3, Sand & Clay 3, Sand & Gravel 2
500–1000 ft	Sand 17, Clay 14, Sand & Rocks 5, Shale 5, Sand & Clay 4, Shale & Rocks 3
1000–5000 ft	Clay 1

Who drills here

Licensed firms in state well grid 66-30, busiest first.
Firm of record	Wells	Median depth, ft	Median yield, gpm	Years
Neuendorff's Water Well Service, Inc.	71	140	60	2015–2026
Neuendorff's Water Well Svc., Inc.	39	144	60	2003–2014
Cady's Water wells	20	175	100	2014–2026
Texas Southern Drilling	17	165	30	2020–2026
J&S WATER WELLS	17	840	80	2004–2023
Weisinger Incorporated	10	900	150	2012–2013
Busselman Water Wells, LLC	8	165	86	2023–2025
Burleson Services, Inc.	7	140	100	2003–2008
Bluebonnet Water Wells	6	155	45	2024–2025
Brien Water Wells	5	105	800	2009–2013
W.E.S.T. Drilling	5	20	—	2008
Vortex Drilling, Inc.	4	15	—	2011
CHANDLER DRILLING INC	3	152	—	2009–2017
J&S WATER WELLS - PRIMO TREJO	3	—	100	2010–2014
BEST DRILLING SERVICES, INC.	3	22	—	2006–2011
Everett Carroll Water Well Service	3	120	80	2004–2008
Bussell & Sons LLC	2	191	60	2009–2026
Bell's Drilling Service	2	140	—	2020–2025
Chaffin Water Well Service	2	213	55	2023
G.W.Davis Water Well Co LLC	2	170	30	2023
Kight Water Well Service	2	106	—	2021
J&S WATER WELLS - JOHN RICHARDSON	2	1,024	—	2012–2014
J&S WATER WELLS - MONTE RICHARDSON	2	270	100	2011–2014
Austin County Water Well	2	250	40	2003–2005
TIM FRANKS WATER WELL SERVICE	1	165	45	2025

What the wells are for

Purpose, and how deep each went.
Purpose	Wells	Share	Median depth, ft
Domestic	149	57.5%	140
Irrigation	38	14.7%	520
Rig Supply	29	11.2%	160
Stock	18	6.9%	130
Industrial	10	3.9%	230
Monitor	6	2.3%	20
Environmental Soil Boring	4	1.5%	15
Test Well	3	1.2%	22

By decade drilled.
Decade	Reports	Median depth, ft	Water at, ft
2000s	53	143	26
2010s	94	150	41
2020s	112	140	36

The deepest reports on file

Deepest reports in state well grid 66-30. Column one is the tracking number.
Report	Year	Depth, ft	Water at, ft	Yield, gpm	Purpose
313460	2013	1,035	17	—	Irrigation
327467	2012	1,024	66	—	Industrial
414427	2016	1,020	53	—	Irrigation
391982	2015	1,010	65	100	Rig Supply
396876	2015	1,000	65	—	Irrigation
328162	2012	1,000	165	—	Irrigation
316137	2013	1,000	28	2,000	Irrigation
347046	2013	910	25	—	Irrigation
279736	2012	910	25	—	Irrigation
339195	2013	900	30	—	Irrigation

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 66-30?

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 Colorado County, Wharton County.