Cisco Formation

Operator-reported tops from 10,006 wells across 68 counties, median tops running 478–10,978 ft by county.

Top depth: 500 ft 9,852 ft

1,537 wells shown (sampled from 10,006)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Wilbarger	2,207	686 ft	300–1,486	↓
Scurry	1,206	6,638 ft	6,291–6,779	↓
Sterling	1,036	7,330 ft	6,725–7,814	↓
Martin	626	8,500 ft	5,073–10,457	↓
Montague	510	876 ft	758–1,500	↓
Wilbarger	377	1,337 ft	500–3,618	↓
King	332	3,597 ft	3,408–3,920	↓
Stonewall	305	3,330 ft	3,041–3,568	↓
Clay	290	680 ft	174–1,768	↓
Nolan	213	4,042 ft	3,636–4,562	↓
Glasscock	212	8,104 ft	7,918–8,652	↓
Archer	198	876 ft	447–1,751	↓
Fisher	187	3,320 ft	2,976–4,965	↓
Tom Green	170	5,208 ft	3,098–6,000	↓
Irion	128	5,692 ft	5,214–6,431	↓
Ector	126	8,658 ft	8,399–10,039	↓
Howard	120	7,745 ft	7,298–9,132	↓
Coke	110	4,206 ft	3,344–4,756	↓
Borden	104	6,863 ft	6,558–8,015	↓
Throckmorton	86	1,284 ft	984–1,744	↓
Foard	77	3,692 ft	1,868–4,570	↓
Runnels	75	3,046 ft	2,778–3,600	↓
Young	68	846 ft	500–1,375	↓
Eastland	66	830 ft	482–950	↓
Crane	65	7,549 ft	7,132–8,036	↓
Sutton	64	2,290 ft	1,998–5,260	↓
Upton	62	9,174 ft	7,623–10,518	↓
Kent	60	5,691 ft	4,838–6,141	↓
Menard	57	2,035 ft	870–2,711	↓
Jones	57	3,550 ft	2,850–3,655	↓
Oldham	52	7,450 ft	6,092–7,766	↓
Taylor	51	3,002 ft	2,280–3,602	↓
Stephens	48	766 ft	400–1,622	↓
Hockley	44	9,592 ft	9,225–9,865	↓
Haskell	42	3,162 ft	2,670–3,376	↓
Hardeman	42	3,423 ft	2,670–4,002	↓
Andrews	41	8,937 ft	8,720–10,664	↓
Pecos	39	6,572 ft	5,649–7,330	↓
Reagan	29	8,172 ft	8,058–9,173	↓
Concho	29	2,460 ft	1,722–2,784	↓
Schleicher	28	3,390 ft	2,457–6,360	↓
Callahan	28	870 ft	448–1,799	↓
Motley	25	4,520 ft	4,032–5,467	↓
Shackelford	24	1,626 ft	970–1,703	↓
Midland	24	10,229 ft	10,012–10,326	↓
Crockett	23	5,835 ft	5,569–7,088	↓
Hansford	23	4,640 ft	4,361–4,693	↓
Jack	20	690 ft	300–1,800	↓
Edwards	18	2,344 ft	1,949–2,730	↓
Lampasas	14	865 ft	828–905	↓
Cochran	14	9,337 ft	9,090–9,708	↓
Knox	14	2,825 ft	1,996–3,380	↓
Palo Pinto	14	478 ft	265–563	↓
Terry	12	10,978 ft	9,408–11,035	↓
Winkler	12	8,210 ft	7,821–8,402	↓
Garza	11	7,382 ft	5,860–8,203	↓
Yoakum	11	9,761 ft	9,622–10,878	↓
Baylor	10	1,345 ft	1,019–2,260	↓
Potter	10	7,168 ft	6,917–7,329	↓
Cottle	8	3,660 ft	3,292–4,131	↓
Hartley	8	4,972 ft	4,754–5,206	↓
Ward	7	8,136 ft	7,695–9,352	↓
Coleman	7	2,102 ft	816–2,245	↓
Mitchell	7	5,676 ft	5,400–5,709	↓
Brown	6	481 ft	266–548	↓
Dickens	6	5,394 ft	4,030–5,630	↓
Gaines	6	8,773 ft	8,474–9,885	↓
Dawson	5	9,178 ft	8,755–9,992	↓

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.