Navarro Formation

Operator-reported tops from 10,866 wells across 51 counties, median tops running 210–12,420 ft by county.

Top depth: 3,050 ft 9,680 ft

2,652 wells shown (sampled from 10,866)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Mcmullen	1,840	8,130 ft	6,457–9,538	↓
Milam	1,827	679 ft	315–1,900	↓
Gonzales	1,348	8,036 ft	5,920–9,603	↓
Atascosa	944	6,101 ft	3,600–8,478	↓
Lee	498	5,108 ft	3,968–6,457	↓
Brazos	422	5,748 ft	4,656–8,532	↓
Wilson	414	4,826 ft	1,426–6,757	↓
Fayette	399	7,704 ft	5,814–9,667	↓
Guadalupe	387	801 ft	630–1,249	↓
Frio	379	3,678 ft	2,681–5,122	↓
Burleson	366	4,346 ft	3,258–6,858	↓
Karnes	220	8,530 ft	7,108–9,647	↓
Bexar	209	210 ft	210–550	↓
Webb	191	5,222 ft	4,236–7,903	↓
Washington	188	7,968 ft	7,494–10,496	↓
Bastrop	183	4,458 ft	623–5,000	↓
De Witt	119	10,618 ft	9,929–11,433	↓
La Salle	113	6,242 ft	5,582–7,770	↓
Medina	82	450 ft	386–1,000	↓
Caldwell	82	998 ft	500–1,319	↓
Tyler	71	12,256 ft	11,539–12,980	↓
Van Zandt	62	1,140 ft	910–1,219	↓
Lavaca	45	10,435 ft	9,027–11,386	↓
Zavala	41	510 ft	340–2,591	↓
Harrison	40	1,904 ft	1,730–1,965	↓
Madison	36	6,075 ft	5,070–6,624	↓
Leon	35	4,114 ft	3,252–5,890	↓
Polk	34	12,420 ft	11,005–12,713	↓
Robertson	31	2,510 ft	1,181–4,320	↓
Jasper	29	10,550 ft	9,600–12,156	↓
Rusk	22	2,236 ft	1,909–2,368	↓
Live Oak	19	9,277 ft	9,112–10,662	↓
Grimes	17	8,773 ft	7,246–11,023	↓
Cherokee	17	2,806 ft	2,671–4,454	↓
Dimmit	15	2,300 ft	1,402–3,344	↓
Williamson	14	532 ft	250–1,470	↓
Austin	13	12,347 ft	12,131–13,412	↓
Cherokee	13	2,785 ft	2,282–3,688	↓
Newton	11	10,280 ft	9,585–12,859	↓
Zapata	11	9,634 ft	9,319–11,591	↓
Nacogdoches	10	3,158 ft	2,328–4,646	↓
Navarro	10	807 ft	552–950	↓
Shelby	9	1,168 ft	1,140–1,532	↓
Upshur	7	1,765 ft	1,622–1,828	↓
Bee	7	10,530 ft	10,530–11,538	↓
Wood	7	1,980 ft	1,663–2,217	↓
Limestone	6	874 ft	708–1,127	↓
Gregg	6	1,668 ft	1,290–1,858	↓
Walker	6	12,260 ft	9,488–13,320	↓
Smith	6	2,435 ft	2,102–2,686	↓
Camp	5	1,595 ft	1,392–1,627	↓

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.