James Lime Formation

Operator-reported tops from 8,923 wells across 24 counties, median tops running 5,272–10,028 ft by county.

Top depth: 5,400 ft 9,100 ft

717 wells shown (sampled from 8,923)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Nacogdoches	1,584	7,686 ft	7,068–8,754	↓
Panola	1,574	5,552 ft	5,353–6,049	↓
Harrison	1,214	5,850 ft	5,375–6,558	↓
Rusk	1,123	6,800 ft	6,440–7,160	↓
Shelby	643	6,333 ft	5,380–7,121	↓
San Augustine	518	7,678 ft	7,235–8,677	↓
Cherokee	456	9,172 ft	8,129–9,738	↓
Smith	356	7,986 ft	7,682–8,392	↓
Freestone	295	8,360 ft	7,509–8,625	↓
Gregg	277	7,035 ft	6,877–7,262	↓
Henderson	181	9,828 ft	8,212–10,144	↓
Leon	137	9,181 ft	8,769–10,403	↓
Robertson	103	8,900 ft	7,716–9,933	↓
Angelina	83	9,533 ft	9,300–9,919	↓
Van Zandt	67	5,272 ft	5,016–8,474	↓
Limestone	63	8,035 ft	6,950–8,370	↓
Anderson	61	9,880 ft	9,411–10,516	↓
Upshur	58	7,584 ft	7,265–7,756	↓
Houston	57	10,028 ft	9,743–12,312	↓
Marion	33	6,363 ft	5,589–7,193	↓
Sabine	15	6,960 ft	6,796–7,321	↓
Maverick	12	6,796 ft	6,119–9,197	↓
Cass	8	6,383 ft	5,799–6,712	↓
Camp	5	7,708 ft	7,626–7,782	↓

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.