EARTHQUAKES · GLASSCOCK AREA · TX2021YBPL

Magnitude 2.2 23 km W of Garden City, Texas

Thursday, December 9, 2021, 3:47:17 AM Central · 2021-12-09 09:47:17 UTC

A magnitude 2.2 earthquake 23 km W of Garden City, Texas on December 9, 2021 at 3:47 AM Central, 8.5 km deep, in the Glasscock County area.

It is one of 34 M2+ events located within 10 km of this spot, 3 of them in the thirty days before it; the largest nearby was M3.3.

15 active injection or disposal wells sit within 10 km, the nearest 1.3 km away and operated by Oxyrock Operating, LLC; together they hold 249,000 barrels a day of permitted capacity.

16 of the nearby wells report daily to TexNet; they injected 78,537 barrels a day in August 2026.

M2.2: ML, reviewed
8.5: km deep · 27,842 ft
3: M2+ within 10 km, prior 30 days
34: M2+ within 10 km, all time
15: active injection wells within 10 km
1,160: permitted wells within 10 km

Location

Epicenter: 31.8869, -101.7291
County area: Glasscock County
On a map: Google Maps ↗
Catalog: USGS event page ↗ · TexNet catalog ↗

Around it in time and space

M2+ events within 10 km, nearest in time first.

When	Mag	Distance	Depth
Dec 7, 2021, 1:26 PM	2.4	0.6 km	7.9 km
Dec 3, 2021, 10:22 PM	2.5	3.2 km	11.2 km
Dec 16, 2021, 10:51 AM	2.0	3.3 km	9.4 km
Nov 17, 2021, 9:21 AM	2.1	0.6 km	8.2 km
Dec 30, 2021, 11:29 PM	2.6	1.9 km	7.8 km
Feb 10, 2022, 11:45 AM	3.3	1.6 km	9.1 km
Feb 15, 2022, 11:14 AM	2.9	1.3 km	8.6 km
Sep 1, 2021, 3:03 AM	2.1	2.6 km	9.5 km
May 19, 2021, 2:35 AM	2.0	8.2 km	4.3 km
Mar 1, 2023, 3:26 AM	2.0	8.3 km	8.2 km
Jun 5, 2023, 3:18 AM	2.0	7.3 km	9.8 km
Jul 3, 2023, 5:13 PM	3.0	7 km	9.1 km

Largest nearby on record: M3.3 on Feb 10, 2022.

Injection wells within 10 km

RRC UIC MASTER · ACTIVE PERMITS

Proximity is not attribution. The wells are listed because the question is always asked; whether any of them is connected to this event is for the RRC's seismic response review, not this page. 16 of these report daily to TexNet: 78.5K bbl/d in Aug 2026.

Well	Operator	UIC no.	Distance	Permitted, bbl/d	Injection zone, ft
Cornwallis #1D	Oxyrock Operating, LLC	000126034	1.3 km	10,000	3,750–4,750
Glasscock 403 SWD #1	Goodnight Midstream Permian, LLC	000110084	2.2 km	35,000	3,785–4,200
Wrage 21 #4D	Oxyrock Operating, LLC	000124428	2.2 km	10,000	3,872–4,877
Wrage 28 #3D	Oxyrock Operating, LLC	000115741	2.3 km	10,000	3,873–4,737
Wrage 16 #1D	Oxyrock Operating, LLC	000115689	2.8 km	10,000	3,850–4,700
Wrage 33 #2D	Oxyrock Operating, LLC	000115760	3.2 km	10,000	3,796–4,705
Brunson "35" #1D	Pioneer Natural Res. USA, Inc.	000108101	3.3 km	20,000	3,700–4,400
Boone -F- Deep #1	Select Water Solutions, LLC	000095975	3.8 km	25,000	4,386–10,230
Brunson SWD #3	Wilson Systems, Inc.	000054016	4.9 km	7,000	2,573–5,200
L. M. Harrison et Al #1W	Aqua Terra Permian, LLC	000102275	5.4 km	20,000	4,002–4,196
George III #1D	Oxyrock Operating, LLC	000125173	5.6 km	10,000	3,695–4,690
Superior #2	Aqua Terra Permian, LLC	000104436	5.6 km	20,000	3,405–4,500
Boone, K. S. #6	Civitas Permian Operating, LLC	000117124	5.7 km	22,500	3,923–4,455
WTH 7 SWD #18	Deep Blue Operating I LLC	000124634	5.7 km	24,500	10,800–13,500
Leary #1D	Oxyrock Operating, LLC	000124442	6.5 km	15,000	11,567–12,770

Disposal in Glasscock County → · How disposal permits and volumes work →

About this data

Event tx2021ybpl from the USGS earthquake catalog, located by TexNet (UT Bureau of Economic Geology) and refreshed daily. Nearby wells from the RRC UIC well master and permit coordinates; daily volumes from the TexNet injection reporting tool.

Developers: this page as JSON is GET /v1/data/earthquakes/tx/events/tx2021ybpl, documented in the API reference.