Del Rio Formation

Operator-reported tops from 1,128 wells across 22 counties, median tops running 2,400–11,336 ft by county.

Top depth: 1,865 ft 9,722 ft

72 wells shown (sampled from 1,128)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Maverick	297	2,862 ft	1,950–4,882	↓
Caldwell	196	2,562 ft	1,901–2,706	↓
Guadalupe	88	2,400 ft	1,944–2,545	↓
Brazos	70	8,110 ft	7,522–8,780	↓
Burleson	56	8,054 ft	7,566–8,515	↓
Wilson	47	6,522 ft	5,130–8,051	↓
Dimmit	41	5,939 ft	5,270–7,534	↓
Gonzales	40	7,637 ft	6,874–9,150	↓
Fayette	39	8,292 ft	7,485–9,082	↓
Atascosa	39	7,368 ft	5,590–10,097	↓
Madison	35	9,441 ft	9,294–10,048	↓
Lee	25	8,380 ft	8,122–9,112	↓
Frio	23	7,111 ft	5,825–7,780	↓
Leon	23	7,778 ft	7,363–8,570	↓
Robertson	20	7,534 ft	6,021–7,738	↓
Zavala	19	5,850 ft	5,225–6,670	↓
La Salle	19	9,388 ft	7,799–10,205	↓
Karnes	16	10,565 ft	10,323–10,902	↓
Webb	15	9,388 ft	8,742–9,600	↓
Smith	9	4,919 ft	4,744–6,254	↓
Grimes	6	9,703 ft	9,532–10,193	↓
Mcmullen	5	11,336 ft	10,792–11,747	↓

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.