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How Deep Are Wells in Alabama? Real Depth Data by County

"How deep will my well need to be?" is one of the hardest well-drilling questions to answer in the abstract, because it depends entirely on local geology. Alabama publishes its driller's completion reports as open data, so instead of a national average, here is what 28,929 actual residential wells on record report for depth, broken down by county.

Source and method: Geological Survey of Alabama Water Well Finder (RBDMS-ENV, from ADEM Form 60 completion reports), extracted 2026-07-14. Figures include only wells recorded as residential (domestic) use, with a reported depth between 15 and 2,000 ft (to exclude likely data-entry errors). A county is shown only if it has at least 5 qualifying reports. The depth shown is the reported total well depth (from the construction record). This dataset carries no completion date, so figures cover all domestic wells on record rather than only recent ones, and the driller-submitted figures are not independently verified by GSA/ADEM. These are figures self-reported by licensed drillers to the state; neither the Geological Survey of Alabama nor this site independently verifies them. Treat this as a planning reference, not a guarantee for any specific property, your own site could sit well outside your county's typical range.

Median well depth by county

"Typical range" is the 10th-to-90th-percentile band, i.e. where 80% of reported wells in that county fell. Counties with fewer than 5 qualifying reports are omitted rather than shown with a misleading precise figure.

County Median depth Typical range (10th-90th pct) Reports used
Autauga 205 ft 100-320 ft 806
Baldwin 65 ft 42-120 ft 5,023
Barbour 208 ft 110-342 ft 248
Bibb 170 ft 50-242 ft 13
Blount 166 ft 60-225 ft 8
Bullock 220 ft 32-953 ft 191
Butler 300 ft 120-430 ft 265
Calhoun 125 ft 70-158 ft 8
Chambers 145 ft 68-350 ft 151
Cherokee 120 ft 80-207 ft 13
Chilton 200 ft 100-300 ft 25
Choctaw 250 ft 126-435 ft 1,128
Clarke 280 ft 125-460 ft 155
Clay 98 ft 56-205 ft 173
Cleburne 200 ft 59-365 ft 22
Coffee 275 ft 140-480 ft 1,135
Colbert 138 ft 75-205 ft 24
Conecuh 200 ft 90-360 ft 145
Coosa 140 ft 47-202 ft 33
Covington 224 ft 133-380 ft 862
Crenshaw 200 ft 110-410 ft 256
Cullman 200 ft 114-300 ft 15
Dale 295 ft 180-440 ft 1,201
Dallas 170 ft 63-620 ft 85
De Kalb 100 ft 70-170 ft 17
Elmore 150 ft 45-305 ft 630
Escambia 120 ft 41-340 ft 168
Etowah 92 ft 62-249 ft 28
Fayette 113 ft 57-280 ft 28
Franklin 143 ft 35-300 ft 36
Geneva 240 ft 150-320 ft 490
Greene 378 ft 100-504 ft 16
Hale 280 ft 55-586 ft 391
Henry 215 ft 82-360 ft 948
Houston 175 ft 80-300 ft 1,447
Jackson 88 ft 55-105 ft 12
Jefferson 200 ft 81-265 ft 7
Lamar 110 ft 28-217 ft 35
Lauderdale 111 ft 61-120 ft 7
Lawrence 113 ft 75-175 ft 16
Lee 65 ft 35-310 ft 1,392
Lowndes 220 ft 33-810 ft 152
Macon 120 ft 36-380 ft 607
Madison 74 ft 44-145 ft 1,876
Marengo 270 ft 176-1130 ft 911
Marion 114 ft 83-180 ft 14
Marshall 122 ft 50-200 ft 15
Mobile 83 ft 55-130 ft 4,170
Monroe 221 ft 80-440 ft 122
Montgomery 260 ft 130-620 ft 497
Morgan 171 ft 78-277 ft 22
Perry 243 ft 50-580 ft 232
Pickens 98 ft 20-203 ft 10
Pike 210 ft 120-380 ft 450
Randolph 117 ft 57-235 ft 112
Russell 69 ft 40-385 ft 640
Shelby 113 ft 61-300 ft 17
St. Clair 165 ft 124-205 ft 7
Sumter 123 ft 60-860 ft 151
Talladega 147 ft 75-325 ft 57
Tallapoosa 84 ft 50-298 ft 116
Tuscaloosa 102 ft 55-245 ft 46
Washington 112 ft 50-330 ft 502
Wilcox 240 ft 120-530 ft 532
Winston 163 ft 100-260 ft 18

How to use this table

Find your county, then use the median and typical-range figures as a starting point when budgeting with the well drilling cost estimator or reading the cost guide. A driller working in your county day-to-day will still know more about your specific property than a county-wide figure can, ask them how your site compares to the county's typical range, and why, before you commit to a per-foot quote with no depth ceiling.

We build these tables state by state from each state's public completion-report data. See also our Texas well depth by county page.

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