Vicksburg Formation

Operator-reported tops from 7,275 wells across 40 counties, median tops running 1,200–12,550 ft by county.

Top depth: 800 ft 8,770 ft

1,137 wells shown (sampled from 7,275)

Depth by County

County	Wells	Median Top	Typical Range	CSV
De Witt	1,258	1,533 ft	1,059–3,320	↓
Starr	1,027	7,006 ft	5,019–9,541	↓
Starr	877	10,550 ft	7,200–13,069	↓
Goliad	534	3,800 ft	3,050–5,080	↓
Lavaca	426	1,900 ft	550–4,005	↓
Brooks	331	9,470 ft	7,117–12,238	↓
Bee	321	3,200 ft	2,710–5,065	↓
Wharton	261	5,500 ft	4,915–6,445	↓
Victoria	215	4,827 ft	3,400–5,871	↓
Liberty	198	7,055 ft	3,658–8,366	↓
Fort Bend	157	6,436 ft	4,818–7,698	↓
Nueces	156	8,215 ft	7,200–10,673	↓
Harris	144	7,700 ft	4,821–8,448	↓
Jim Wells	133	5,250 ft	4,450–8,208	↓
Jackson	128	5,624 ft	4,694–7,570	↓
San Patricio	118	5,738 ft	4,552–9,010	↓
Hardin	91	5,638 ft	3,571–7,484	↓
Kleberg	85	8,775 ft	8,164–10,990	↓
Colorado	81	4,150 ft	3,260–4,691	↓
Montgomery	71	3,533 ft	3,395–3,977	↓
Jefferson	70	8,300 ft	7,706–8,960	↓
Refugio	67	6,362 ft	5,886–8,395	↓
Duval	67	4,090 ft	1,500–5,945	↓
Tyler	67	3,804 ft	2,388–4,743	↓
Polk	61	4,035 ft	3,314–4,237	↓
Chambers	60	10,575 ft	8,461–12,568	↓
Kenedy	50	11,813 ft	8,600–12,508	↓
Orange	41	8,950 ft	8,420–9,247	↓
Karnes	28	1,200 ft	1,200–2,558	↓
Newton	20	5,420 ft	3,930–6,903	↓
Waller	20	4,563 ft	4,500–5,108	↓
Live Oak	17	3,870 ft	3,062–4,342	↓
Austin	17	2,920 ft	2,763–3,682	↓
Jasper	17	5,535 ft	4,631–5,976	↓
Jim Hogg	15	3,440 ft	1,906–6,200	↓
Calhoun	11	12,550 ft	5,947–13,082	↓
Brazoria	11	8,320 ft	5,550–8,804	↓
Galveston	10	10,498 ft	6,977–15,051	↓
San Jacinto	9	2,630 ft	2,400–4,412	↓
Matagorda	5	10,660 ft	8,896–11,783	↓

Counties with fewer than 5 wells omitted. Depths are measured depth as filed; typical range is the 10th–90th percentile of reported tops — raw filings contain occasional typo depths, so extremes are not shown.