EARTHQUAKES · KARNES AREA · TX2021EHFS
Magnitude 2.5 17 km SSW of Smiley, Texas
Tuesday, March 2, 2021, 2:58:51 PM Central · 2021-03-02 20:58:51 UTC
A magnitude 2.5 earthquake 17 km SSW of Smiley, Texas on March 2, 2021 at 2:58 PM Central, 6.7 km deep, in the Karnes County area.
It is one of 80 M2+ events located within 10 km of this spot, 1 of them in the thirty days before it; the largest nearby was M2.9.
3 active injection or disposal wells sit within 10 km, the nearest 2.7 km away and operated by Pilot Water Solutions SWD LLC; together they hold 67,500 barrels a day of permitted capacity.
1 of the nearby wells report daily to TexNet; they injected 5,980 barrels a day in August 2026.
- M2.5
- ML, reviewed
- 6.7
- km deep · 21,995 ft
- 1
- M2+ within 10 km, prior 30 days
- 80
- M2+ within 10 km, all time
- 3
- active injection wells within 10 km
- 790
- permitted wells within 10 km
Location
- Epicenter
- 29.1160, -97.6910
- County area
- Karnes 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 |
|---|---|---|---|
| Mar 2, 2021, 7:50 AM | 2.0 | 1.5 km | 8.7 km |
| Apr 20, 2021, 10:23 AM | 2.0 | 6.3 km | 6.9 km |
| Nov 5, 2020, 3:45 PM | 2.7 | 8.9 km | 6.5 km |
| Nov 5, 2020, 10:39 AM | 2.7 | 9 km | 7.4 km |
| Jul 11, 2021, 8:32 PM | 2.1 | 8.2 km | 6.3 km |
| Jul 13, 2021, 7:37 PM | 2.5 | 7.8 km | 5.2 km |
| Jul 15, 2021, 3:09 AM | 2.1 | 7.7 km | 6.5 km |
| Jul 18, 2021, 3:58 PM | 2.1 | 8.3 km | 5.5 km |
| Jul 19, 2021, 3:41 PM | 2.1 | 7.8 km | 5.3 km |
| Jul 20, 2021, 5:50 AM | 2.0 | 8.7 km | 5.7 km |
| Jul 20, 2021, 1:38 PM | 2.0 | 8.4 km | 4.9 km |
| Jul 21, 2021, 10:21 AM | 2.1 | 9.4 km | 5.3 km |
Largest nearby on record: M2.9 on May 26, 2026.
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. 1 of these report daily to TexNet: 5.98K bbl/d in Aug 2026.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| Henning #2 | Pilot Water Solutions SWD LLC | 000115129 | 2.7 km | 25,000 | 5,300–7,950 |
| Lamza SWD #1 | Goodnight Midstream Permian, LLC | 000103533 | 9.1 km | 25,000 | 5,000–8,000 |
| Kerlick #1 | Evx Operating LLC | 000104506 | 9.1 km | 17,500 | 5,695–5,710 |
Disposal in Karnes County → · How disposal permits and volumes work →
About this data
Event tx2021ehfs 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/tx2021ehfs, documented in the API reference.