Caprock Formation

Operator-reported tops from 708 wells across 13 counties, median tops running 664–3,580 ft by county.

Top depth: 504 ft 4,121 ft

160 wells shown (sampled from 708)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Chambers	175	770 ft	501–1,382	↓
Brazoria	125	867 ft	580–3,086	↓
Hardin	89	1,595 ft	980–3,477	↓
Jefferson	65	1,065 ft	378–1,599	↓
Liberty	51	825 ft	326–2,597	↓
Washington	49	2,410 ft	2,410–3,394	↓
Matagorda	46	2,100 ft	1,731–2,550	↓
Harris	37	841 ft	30–3,046	↓
Fort Bend	25	3,580 ft	3,171–3,774	↓
Waller	23	1,900 ft	1,900–3,356	↓
Wharton	10	697 ft	653–2,669	↓
Smith	8	664 ft	580–701	↓
Milam	5	696 ft	696–696	↓

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.