Marmaton Formation

Operator-reported tops from 1,690 wells across 8 counties, median tops running 5,402–11,804 ft by county.

Top depth: 5,760 ft 9,239 ft

114 wells shown (sampled from 1,690)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Ochiltree	597	6,825 ft	6,360–7,438	↓
Wheeler	263	11,804 ft	10,808–12,296	↓
Lipscomb	182	7,655 ft	7,215–8,555	↓
Hansford	168	6,142 ft	5,801–6,518	↓
Hemphill	157	9,422 ft	8,907–10,466	↓
Roberts	137	8,600 ft	6,883–9,023	↓
Sherman	133	5,402 ft	4,832–5,531	↓
Hutchinson	53	5,980 ft	5,474–6,380	↓

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.