Strawn Formation

Operator-reported tops from 32,404 wells across 87 counties, median tops running 25–14,901 ft by county.

Top depth: 1,122 ft 10,851 ft

2,083 wells shown (sampled from 32,404)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Martin	3,014	10,424 ft	9,858–11,007	↓
Midland	2,338	10,500 ft	10,165–10,680	↓
Sutton	2,112	7,816 ft	6,867–8,479	↓
Glasscock	2,055	9,731 ft	9,225–10,093	↓
Upton	1,712	10,240 ft	9,354–10,753	↓
Andrews	1,266	10,926 ft	9,426–11,089	↓
Palo Pinto	1,183	1,750 ft	1,050–2,915	↓
Crockett	1,173	8,840 ft	7,831–9,460	↓
Howard	1,019	9,428 ft	8,818–9,699	↓
Stephens	970	2,060 ft	1,574–2,751	↓
Johnson	889	1,802 ft	1,075–3,104	↓
Wise	871	3,350 ft	1,290–4,070	↓
Wise	786	3,630 ft	2,113–4,679	↓
Ector	743	10,232 ft	9,878–10,577	↓
Young	729	2,922 ft	1,900–3,638	↓
Reagan	642	9,620 ft	8,881–10,351	↓
Cooke	615	1,350 ft	809–3,155	↓
Schleicher	585	6,424 ft	4,268–8,189	↓
Parker	494	1,940 ft	1,019–3,022	↓
Eastland	463	1,520 ft	949–2,153	↓
Nolan	460	5,990 ft	5,160–6,911	↓
Archer	437	3,688 ft	2,860–4,310	↓
King	401	5,269 ft	5,049–5,458	↓
Montague	355	3,284 ft	1,614–5,417	↓
Tom Green	333	5,492 ft	4,530–7,011	↓
Stonewall	330	5,056 ft	4,813–5,392	↓
Garza	277	7,668 ft	7,177–8,174	↓
Haskell	269	4,837 ft	4,356–5,097	↓
Throckmorton	265	3,482 ft	2,818–4,000	↓
Kent	261	6,684 ft	6,526–7,232	↓
Erath	250	1,814 ft	1,525–2,579	↓
Scurry	233	7,181 ft	6,800–7,506	↓
Borden	230	7,977 ft	7,665–8,588	↓
Terrell	229	11,100 ft	8,636–11,838	↓
Denton	222	3,355 ft	1,632–4,847	↓
Jones	207	4,583 ft	4,412–4,850	↓
Coke	203	5,860 ft	5,492–6,418	↓
Clay	201	4,173 ft	2,838–5,079	↓
Dawson	176	10,739 ft	10,137–10,954	↓
Fisher	173	5,544 ft	4,986–6,467	↓
Loving	165	14,901 ft	14,253–15,126	↓
Grayson	160	3,440 ft	2,057–4,677	↓
Hood	150	1,540 ft	233–3,237	↓
Shackelford	142	3,023 ft	2,339–3,949	↓
Garza	137	11,072 ft	10,412–11,278	↓
Mcculloch	128	1,196 ft	770–1,498	↓
Wilbarger	127	3,944 ft	3,546–6,077	↓
Edwards	120	6,628 ft	4,776–9,725	↓
Crane	117	7,879 ft	7,452–9,487	↓
Sterling	114	8,124 ft	7,209–8,820	↓
Val Verde	113	10,030 ft	9,530–11,848	↓
Concho	112	3,300 ft	2,419–3,824	↓
Wichita	111	3,668 ft	1,376–4,102	↓
Pecos	102	8,285 ft	7,320–11,631	↓
Irion	100	7,772 ft	6,857–8,891	↓
Mitchell	91	6,144 ft	5,924–7,740	↓
Hill	84	1,694 ft	1,590–2,485	↓
Winkler	81	8,764 ft	8,231–13,940	↓
Menard	73	3,570 ft	2,741–3,872	↓
Runnels	73	4,090 ft	3,694–4,424	↓
Hockley	69	10,004 ft	9,900–10,356	↓
Ward	67	10,369 ft	8,333–13,800	↓
Yoakum	65	10,696 ft	10,106–11,322	↓
Terry	63	11,112 ft	10,092–11,635	↓
Hardeman	63	5,905 ft	2,670–6,406	↓
Knox	63	4,880 ft	4,599–5,186	↓
Baylor	61	4,060 ft	3,602–4,818	↓
Tarrant	58	2,635 ft	1,306–3,396	↓
Brown	48	1,203 ft	616–1,466	↓
Erath	48	1,100 ft	339–1,614	↓
Taylor	45	4,696 ft	4,377–4,995	↓
Lynn	34	9,002 ft	8,590–10,034	↓
Oldham	28	9,358 ft	8,319–9,471	↓
Callahan	27	2,895 ft	1,577–3,865	↓
Cottle	26	6,105 ft	5,416–7,613	↓
Ellis	25	2,024 ft	1,888–2,478	↓
Culberson	23	9,493 ft	5,512–12,723	↓
Foard	21	5,431 ft	3,951–5,754	↓
Cochran	19	9,900 ft	5,034–10,402	↓
Kimble	19	1,942 ft	1,162–3,230	↓
Coleman	18	1,359 ft	611–3,398	↓
Lubbock	9	9,498 ft	9,200–10,033	↓
Floyd	9	8,664 ft	8,272–9,096	↓
Somervell	8	2,652 ft	2,061–2,836	↓
Reeves	7	12,420 ft	7,184–13,488	↓
Hartley	5	6,500 ft	6,219–6,978	↓
San Saba	5	25 ft	22–30	↓

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.