Seven Rivers Formation

Operator-reported tops from 25,981 wells across 26 counties, median tops running 765–3,276 ft by county.

Top depth: 1,169 ft 3,417 ft

12,109 wells shown (sampled from 25,981)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Midland	6,394	2,997 ft	2,600–3,278	↓
Howard	3,676	1,800 ft	1,255–2,119	↓
Martin	2,897	3,126 ft	2,986–3,442	↓
Howard	2,166	2,139 ft	1,300–2,519	↓
Pecos	2,083	990 ft	706–1,610	↓
Yoakum	1,559	3,140 ft	3,014–3,522	↓
Ector	1,500	3,020 ft	2,698–3,970	↓
Crane	1,167	1,847 ft	1,665–2,423	↓
Ward	811	2,612 ft	2,169–2,937	↓
Winkler	709	2,760 ft	2,557–3,024	↓
Crockett	388	1,252 ft	808–1,561	↓
Mitchell	349	765 ft	720–1,226	↓
Sterling	318	1,310 ft	994–1,498	↓
Martin	294	2,692 ft	2,350–3,278	↓
Yoakum	283	3,263 ft	3,072–3,574	↓
Hockley	278	2,987 ft	2,792–3,085	↓
Reagan	246	1,917 ft	1,558–2,412	↓
Upton	245	1,922 ft	1,446–3,792	↓
Cochran	144	2,846 ft	2,808–3,114	↓
Scurry	132	1,010 ft	764–1,122	↓
Terry	111	3,276 ft	3,094–3,430	↓
Borden	89	1,398 ft	1,256–2,025	↓
Irion	77	954 ft	497–1,277	↓
Dawson	43	3,130 ft	2,366–3,208	↓
Garza	13	1,530 ft	1,409–1,615	↓
Lubbock	9	2,275 ft	2,162–2,485	↓

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.