EARTHQUAKES · DIMMIT AREA · TX2023ISUR
Magnitude 2.1 23 km SSW of Asherton, Texas
Thursday, May 4, 2023, 10:10:13 PM Central · 2023-05-05 03:10:13 UTC
A magnitude 2.1 earthquake 23 km SSW of Asherton, Texas on May 4, 2023 at 10:10 PM Central, 7.7 km deep, in the Dimmit County area.
It is one of 5 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M2.4.
6 active injection or disposal wells sit within 10 km, the nearest 7 km away and operated by Lewis Petro Properties, Inc.; together they hold 147,000 barrels a day of permitted capacity.
- M2.1
- ML, reviewed
- 7.7
- km deep · 25,267 ft
- 0
- M2+ within 10 km, prior 30 days
- 5
- M2+ within 10 km, all time
- 6
- active injection wells within 10 km
- 283
- permitted wells within 10 km
Location
- Epicenter
- 28.2410, -99.8460
- County area
- Dimmit 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 |
|---|---|---|---|
| Aug 13, 2021, 11:59 AM | 2.0 | 2.4 km | 5.2 km |
| Jun 2, 2025, 3:46 AM | 2.2 | 9.3 km | 1.5 km |
| Aug 21, 2025, 4:24 AM | 2.1 | 5.9 km | 6.0 km |
| Aug 21, 2025, 11:19 PM | 2.4 | 8.6 km | 7.6 km |
Largest nearby on record: M2.4 on Aug 22, 2025.
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.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| Gates Ranch #3224 | Lewis Petro Properties, Inc. | 000065547 | 7 km | 2,000 | 5,124–5,142 |
| Catarina Ranch SWD #3 | Choya Operating, LLC | 000113184 | 7.9 km | 25,000 | 8,700–10,500 |
| Cat Ranch SWD #1 | Choya Operating, LLC | 000111060 | 8.2 km | 35,000 | 8,700–10,500 |
| Cat Ranch SWD #2 | Choya Operating, LLC | 000111061 | 8.2 km | 35,000 | 8,700–10,500 |
| Now #1 | Now Environmental Solutions, LLC | 000118738 | 8.9 km | 25,000 | 8,750–10,600 |
| Now #2 | Now Environmental Solutions, LLC | 000124881 | 9 km | 25,000 | 8,800–10,650 |
Disposal in Dimmit County → · How disposal permits and volumes work →
About this data
Event tx2023isur 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/tx2023isur, documented in the API reference.