EARTHQUAKES · WARD AREA · TX2021RBBK
Magnitude 2.4 8 km N of Barstow, Texas
Tuesday, August 31, 2021, 6:57:14 AM Central · 2021-08-31 11:57:14 UTC
A magnitude 2.4 earthquake 8 km N of Barstow, Texas on August 31, 2021 at 6:57 AM Central, 7.4 km deep, in the Ward County area.
It is one of 13 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M2.6.
15 active injection or disposal wells sit within 10 km, the nearest 1 km away and operated by Seaboard Operating Co.; together they hold 95,950 barrels a day of permitted capacity.
5 of the nearby wells report daily to TexNet; they injected 27,373 barrels a day in August 2026.
- M2.4
- ML, reviewed
- 7.4
- km deep · 24,419 ft
- 0
- M2+ within 10 km, prior 30 days
- 13
- M2+ within 10 km, all time
- 15
- active injection wells within 10 km
- 518
- permitted wells within 10 km
Location
- Epicenter
- 31.5374, -103.4014
- County area
- Ward 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 |
|---|---|---|---|
| Apr 22, 2021, 10:57 PM | 2.2 | 5.1 km | 4.8 km |
| Apr 14, 2021, 7:25 AM | 2.2 | 5.4 km | 6.1 km |
| Oct 25, 2023, 6:56 PM | 2.1 | 6.1 km | 8.9 km |
| Feb 2, 2024, 9:59 AM | 2.4 | 4.4 km | 8.1 km |
| Apr 30, 2024, 1:40 PM | 2.6 | 4.4 km | 8.6 km |
| Mar 8, 2018, 10:53 PM | 2.5 | 1.7 km | 4.9 km |
| Aug 2, 2025, 8:14 AM | 2.4 | 3.8 km | 4.2 km |
| Aug 2, 2025, 11:44 AM | 2.1 | 1.5 km | 2.5 km |
| Aug 2, 2025, 2:07 PM | 2.1 | 7.4 km | 4.9 km |
| Aug 7, 2025, 11:55 AM | 2.2 | 7.6 km | 4.6 km |
| Sep 25, 2025, 7:02 PM | 2.0 | 7.4 km | 8.5 km |
| Feb 4, 2017, 10:48 PM | 2.4 | 9.7 km | 5.4 km |
Largest nearby on record: M2.6 on Apr 30, 2024.
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. 5 of these report daily to TexNet: 27.4K bbl/d in Aug 2026.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| Echols #1D | Seaboard Operating Co. | 000019334 | 1 km | 3,000 | 5,020–5,120 |
| Caroline -H- A #1 | Seaboard Operating Co. | 000127339 | 2.2 km | 3,500 | 5,660–6,268 |
| Cowboy Country SWD #1 | Waterbridge Texas Operating LLC | 000124617 | 2.9 km | 20,000 | 4,775–7,950 |
| Hartwich #2 | Seaboard Operating Co. | 000109731 | 3.2 km | 3,000 | 4,772–4,884 |
| Quito West Unit #503 | Seaboard Operating Co. | 000073148 | 3.2 km | 350 | 4,716–4,782 |
| Lost Frog #13 | Seaboard Operating Co. | 000112756 | 3.4 km | 3,000 | 4,760–4,900 |
| American Quasar Monroe Gas Unit #1 | Pilot Water Solutions Permianllc | 000070379 | 3.5 km | 20,000 | 5,000–6,000 |
| Gary #1 | Seaboard Operating Co. | 000104990 | 3.5 km | 3,000 | 4,722–4,854 |
| Quito West Unit #102W | Seaboard Operating Co. | 000073442 | 3.5 km | 400 | 4,684–4,784 |
| APC 34-197 #1D | Wes Water Holdings LLC | 000116250 | 3.5 km | 30,000 | 4,811–7,221 |
| Lost Frog #15 | Seaboard Operating Co. | 000118017 | 3.6 km | 3,000 | 4,834–4,854 |
| Lost Frog #14 | Seaboard Operating Co. | 000112757 | 3.6 km | 3,000 | 4,800–4,980 |
| Lost Frog #10 | Seaboard Operating Co. | 000112755 | 3.6 km | 3,000 | 4,776–4,870 |
| Quito West Unit #602 | Seaboard Operating Co. | 000094850 | 3.6 km | 350 | 4,702–4,855 |
| Quito West Unit #702W | Seaboard Operating Co. | 000073150 | 3.7 km | 350 | 4,716–4,794 |
Disposal in Ward County → · How disposal permits and volumes work →
About this data
Event tx2021rbbk 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/tx2021rbbk, documented in the API reference.