Nacatoch Formation

Operator-reported tops from 3,450 wells across 30 counties, median tops running 570–6,502 ft by county.

Top depth: 900 ft 4,176 ft

1,285 wells shown (sampled from 3,450)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Panola	612	1,011 ft	900–1,740	↓
Navarro	483	760 ft	1–1,102	↓
Harrison	462	1,123 ft	900–1,916	↓
Wood	335	2,233 ft	1,685–2,416	↓
Rusk	222	2,080 ft	1,800–2,355	↓
Cass	173	1,832 ft	1,585–2,109	↓
Van Zandt	128	1,188 ft	977–1,368	↓
Robertson	114	2,697 ft	1,422–4,444	↓
Leon	112	3,320 ft	2,795–4,699	↓
Smith	110	2,488 ft	2,230–3,118	↓
Marion	106	1,270 ft	972–1,988	↓
Shelby	71	1,871 ft	1,439–2,877	↓
Cherokee	66	2,812 ft	2,350–3,594	↓
Titus	55	840 ft	448–1,858	↓
Limestone	52	1,138 ft	586–1,775	↓
Angelina	48	5,162 ft	3,900–6,060	↓
Upshur	45	1,994 ft	1,804–2,113	↓
Freestone	40	1,260 ft	923–2,609	↓
Gregg	37	1,938 ft	1,857–2,099	↓
Madison	33	6,306 ft	5,958–6,557	↓
Franklin	26	799 ft	560–828	↓
Brazos	26	6,502 ft	5,556–7,780	↓
Morris	21	2,082 ft	1,940–2,189	↓
Hopkins	19	1,403 ft	582–1,522	↓
Camp	18	1,650 ft	1,592–1,754	↓
Bowie	12	1,240 ft	986–1,329	↓
Milam	9	3,886 ft	3,194–4,073	↓
Henderson	5	1,802 ft	1,698–2,202	↓
Kaufman	5	570 ft	436–805	↓
Anderson	5	2,932 ft	2,309–2,957	↓

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.