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EARTHQUAKES · HOWARD AREA · TX2023OWFU

Magnitude 3.5 17 km SSE of Ackerly, Texas

Monday, July 31, 2023, 4:25:21 AM Central · 2023-07-31 09:25:21 UTC

A magnitude 3.5 earthquake 17 km SSE of Ackerly, Texas on July 31, 2023 at 4:25 AM Central, 5.8 km deep, in the Howard County area.

It is one of 85 M2+ events located within 10 km of this spot, 2 of them in the thirty days before it; the largest nearby was M3.9.

15 active injection or disposal wells sit within 10 km, the nearest 1.2 km away and operated by Deep Blue Operating I LLC; together they hold 448,380 barrels a day of permitted capacity.

46 of the nearby wells report daily to TexNet; they injected 267,922 barrels a day in August 2026.

M3.5
ML, reviewed
5.8
km deep · 19,176 ft
2
M2+ within 10 km, prior 30 days
85
M2+ within 10 km, all time
15
active injection wells within 10 km
1,694
permitted wells within 10 km

Location

Epicenter
32.3776, -101.6605
County area
Howard 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.

WhenMagDistanceDepth
Jul 29, 2023, 8:08 PM2.31.1 km7.1 km
Jul 29, 2023, 6:16 PM3.31 km8.7 km
Nov 2, 2023, 2:39 PM3.37.4 km4.5 km
Nov 2, 2023, 2:45 PM2.47.8 km4.0 km
Dec 20, 2023, 8:19 AM3.52.5 km6.3 km
Dec 20, 2023, 8:30 AM2.52.9 km6.3 km
Dec 25, 2023, 5:31 AM2.07.1 km6.5 km
Jan 6, 2024, 11:19 PM2.53.9 km5.3 km
Jan 7, 2024, 12:49 AM3.13.8 km5.7 km
Jan 7, 2024, 6:26 PM2.13.2 km4.6 km
Feb 7, 2023, 7:01 AM2.03.8 km8.8 km
Feb 3, 2023, 1:15 PM2.13.8 km6.7 km

Largest nearby on record: M3.9 on Jun 6, 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. 46 of these report daily to TexNet: 268K bbl/d in Aug 2026.

WellOperatorUIC no.DistancePermitted, bbl/dInjection zone, ft
Nichols 17 #1Deep Blue Operating I LLC0001100311.2 km15,0003,300–6,620
Hughes SWD #1Pilot Water Solutions Permianllc0001094732.3 km35,0003,200–4,800
Diamondback-County Line SWD #1Deep Blue Operating I LLC0001155082.3 km30,0003,200–4,300
DB Hughes #1DDeep Blue Operating I LLC0001179362.4 km30,00010,500–11,900
West Knott SWD #1Deep Blue Operating I LLC0001053752.4 km20,0003,340–4,800
Cottonmouth #1DDeep Blue Operating I LLC0001220842.6 km38,88010,440–11,955
Free Burger #2DOxyrock Operating, LLC0001173523.8 km25,00010,500–13,000
TCM #2DNew Height Energy, LLC0001013913.8 km20,0003,300–5,000
Knott #1Junction Resources OP, LLC0001050434.1 km20,0003,000–4,475
Andre the Giant SWD #1Birch Operations, Inc.0001177004.6 km80,00010,500–11,500
Hulkster SWD #1Birch Operations, Inc.0001175684.6 km60,00010,871–11,380
Fire Barrel #1DOxyrock Operating, LLC0001254534.8 km10,0003,150–4,175
7H SWD #1Deep Blue Operating I LLC0001167985.8 km20,0003,270–5,085
Hughes 44 SWD #1Deep Blue Operating I LLC0001239245.9 km24,50010,500–12,000
Hughes 44 SWD #2DDeep Blue Operating I LLC0001252976 km20,0003,015–5,112

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

About this data

Event tx2023owfu 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/tx2023owfu, documented in the API reference.