Queen City Formation

Operator-reported tops from 14,408 wells across 33 counties, median tops running 350–10,730 ft by county.

Top depth: 899 ft 6,440 ft

5,186 wells shown (sampled from 14,408)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Karnes	4,057	3,873 ft	2,468–6,440	↓
Webb	2,184	2,220 ft	900–4,518	↓
La Salle	1,810	1,550 ft	860–2,674	↓
Zapata	1,289	2,840 ft	1,750–4,991	↓
Live Oak	995	3,804 ft	3,042–6,268	↓
Atascosa	972	1,630 ft	830–2,900	↓
Mcmullen	961	3,209 ft	2,274–5,300	↓
Duval	381	5,698 ft	5,016–6,927	↓
Frio	308	1,358 ft	940–2,183	↓
Starr	261	4,235 ft	2,483–7,746	↓
Nacogdoches	225	350 ft	211–480	↓
Jim Hogg	218	9,440 ft	5,769–10,031	↓
Bee	125	5,550 ft	4,304–6,800	↓
Houston	122	1,261 ft	1,205–1,645	↓
Washington	55	1,224 ft	1,074–1,485	↓
Wharton	53	9,789 ft	9,274–10,363	↓
Fayette	51	1,631 ft	733–2,064	↓
Gonzales	47	1,506 ft	1,246–2,539	↓
Wilson	38	700 ft	1–1,574	↓
Polk	38	7,621 ft	2,400–7,916	↓
Trinity	37	1,554 ft	1,380–1,921	↓
De Witt	33	5,070 ft	3,953–6,545	↓
Anderson	30	362 ft	306–401	↓
Angelina	18	1,440 ft	565–1,890	↓
Goliad	16	6,323 ft	6,110–7,400	↓
Madison	15	1,160 ft	1,080–1,350	↓
Colorado	14	7,448 ft	4,544–8,281	↓
Jackson	12	8,639 ft	8,550–8,650	↓
Lavaca	11	5,410 ft	3,743–7,663	↓
Fort Bend	11	10,730 ft	10,425–11,320	↓
Dimmit	9	1,320 ft	1,064–1,363	↓
Zavala	6	2,434 ft	2,402–2,522	↓
Montgomery	6	8,029 ft	6,070–8,374	↓

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.