Midway Formation

Operator-reported tops from 6,213 wells across 56 counties, median tops running 1–11,457 ft by county.

Top depth: 1,750 ft 9,790 ft

1,089 wells shown (sampled from 6,213)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Dimmit	738	2,688 ft	1,317–3,634	↓
Webb	670	3,824 ft	2,063–9,144	↓
Karnes	431	8,428 ft	6,640–9,214	↓
La Salle	412	4,554 ft	2,668–5,800	↓
Mcmullen	393	7,159 ft	6,409–7,941	↓
Fayette	382	6,754 ft	5,381–8,939	↓
De Witt	261	9,573 ft	8,953–10,292	↓
Brazos	215	5,048 ft	3,790–7,870	↓
Burleson	202	4,665 ft	3,366–6,713	↓
Milam	196	400 ft	1–2,084	↓
Washington	186	7,112 ft	6,538–9,587	↓
Lee	171	4,600 ft	4,025–6,071	↓
Live Oak	154	8,007 ft	7,261–8,512	↓
Wilson	150	2,770 ft	1,992–4,802	↓
Atascosa	125	5,422 ft	3,555–7,157	↓
Frio	122	3,112 ft	2,392–3,710	↓
Gonzales	102	5,900 ft	4,400–7,434	↓
Navarro	94	1 ft	1–1	↓
Tyler	84	10,465 ft	9,876–11,270	↓
Bastrop	82	2,200 ft	583–4,150	↓
Polk	82	10,722 ft	9,382–11,640	↓
Madison	77	4,996 ft	4,410–5,953	↓
Jasper	73	9,004 ft	6,760–11,135	↓
Newton	71	8,815 ft	7,260–9,658	↓
Guadalupe	68	460 ft	408–1,728	↓
Zapata	67	10,224 ft	8,195–11,250	↓
Caldwell	55	420 ft	250–805	↓
Zavala	53	2,630 ft	1,094–3,100	↓
Lavaca	48	10,000 ft	7,327–10,533	↓
Sabine	47	5,089 ft	3,866–6,879	↓
Bee	37	9,352 ft	8,565–9,565	↓
Van Zandt	30	385 ft	309–842	↓
Grimes	28	7,095 ft	5,056–10,994	↓
Bexar	26	210 ft	140–729	↓
Robertson	25	2,088 ft	735–3,609	↓
Colorado	24	10,845 ft	9,996–12,612	↓
Austin	23	11,457 ft	10,996–12,435	↓
Houston	21	5,285 ft	2,667–6,000	↓
San Augustine	20	3,463 ft	2,980–6,402	↓
San Patricio	20	5,880 ft	5,294–10,190	↓
Medina	18	300 ft	154–300	↓
Angelina	17	3,708 ft	3,664–6,076	↓
Leon	15	3,870 ft	2,709–4,251	↓
Nacogdoches	14	2,476 ft	2,207–2,740	↓
Maverick	12	695 ft	667–749	↓
Anderson	10	1,850 ft	1,689–2,641	↓
Walker	8	9,758 ft	8,049–11,392	↓
Wood	8	1,014 ft	889–1,548	↓
Upshur	7	1,172 ft	910–1,483	↓
Gregg	6	1,145 ft	940–1,228	↓
Harrison	6	466 ft	190–1,345	↓
Shelby	6	1,288 ft	1,125–2,638	↓
Cherokee	6	1,780 ft	1,710–2,020	↓
Freestone	5	530 ft	427–1,212	↓
Rusk	5	1,264 ft	1,142–2,234	↓
Limestone	5	250 ft	1–398	↓

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.