Glen Rose Formation

Operator-reported tops from 6,932 wells across 41 counties, median tops running 238–11,958 ft by county.

Top depth: 3,018 ft 7,880 ft

1,634 wells shown (sampled from 6,932)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Panola	2,166	3,357 ft	3,140–3,781	↓
Harrison	853	3,676 ft	3,002–4,790	↓
Leon	458	8,955 ft	7,295–9,650	↓
Nacogdoches	453	5,885 ft	4,975–7,022	↓
Rusk	360	4,750 ft	4,265–5,050	↓
Freestone	259	6,480 ft	5,731–7,460	↓
Shelby	248	3,845 ft	3,170–4,974	↓
Houston	186	10,390 ft	9,088–11,310	↓
Limestone	184	5,510 ft	5,209–6,249	↓
Maverick	169	5,695 ft	3,870–6,312	↓
Angelina	160	7,422 ft	7,217–7,801	↓
Smith	152	5,958 ft	5,667–7,965	↓
Cherokee	140	6,870 ft	5,808–7,972	↓
Robertson	137	6,507 ft	6,062–7,919	↓
Gregg	106	4,952 ft	4,000–5,363	↓
Madison	96	10,907 ft	10,236–11,364	↓
Edwards	89	238 ft	228–355	↓
San Augustine	82	5,646 ft	5,224–5,981	↓
Marion	82	4,870 ft	3,637–5,008	↓
Fayette	69	11,340 ft	10,041–12,660	↓
Henderson	68	6,810 ft	6,275–7,760	↓
Wood	68	6,790 ft	6,560–10,150	↓
Upshur	50	5,822 ft	5,501–6,379	↓
Anderson	49	7,512 ft	5,935–8,400	↓
Dimmit	39	8,500 ft	6,480–9,572	↓
Van Zandt	33	6,560 ft	4,852–7,217	↓
Navarro	32	5,684 ft	5,057–6,151	↓
Cass	22	4,708 ft	4,052–5,095	↓
Val Verde	18	502 ft	485–582	↓
Frio	16	8,617 ft	7,762–10,229	↓
Walker	16	11,958 ft	11,564–12,976	↓
Red River	9	3,009 ft	2,948–3,668	↓
Trinity	9	11,155 ft	8,781–11,324	↓
Zavala	9	7,350 ft	6,994–8,349	↓
Lee	8	9,194 ft	6,852–10,178	↓
Franklin	8	6,062 ft	5,654–6,443	↓
Grimes	7	11,315 ft	8,657–11,723	↓
Camp	6	6,174 ft	6,152–6,500	↓
Atascosa	6	9,526 ft	5,247–10,862	↓
Bowie	5	4,280 ft	3,748–4,861	↓
Hopkins	5	6,634 ft	5,836–7,004	↓

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.