Typical well depths
There is no meaningful national average for residential wells. Some homes have 2 inch driven point wells, some have 5 or 6 inch casing, and depth depends on the geology and water under your parcel. A 6 inch drilled well can be shallow in productive sand and gravel, while bedrock wells run several hundred to a thousand feet. Use these ranges only to sanity-check, never to size a dose.
| Well type | Typical total depth | Basis |
|---|---|---|
| Shallow sand/gravel or driven point | 25-75 ft | Assumed |
| Common residential drilled well | 150-350 ft | Assumed |
| Fractured bedrock / variable yield | 300-600 ft | Assumed |
| Difficult geology or poor aquifer | 600-1,000+ ft | Assumed |
Get your actual record instead
Nearly every state requires drillers to file a construction report, usually kept by the geological survey or the natural resources department. Many states are searchable right on the calculator page. Pick your state:
- Live lookup on our calculator
- Records from the state office
All 50 states and DC
- Alabama: Geological Survey of Alabama well records
- Alaska: Alaska DNR Well Log Tracking System (WELTS)
- Arizona: Arizona ADWR Wells 55 registry
- Arkansas: Arkansas water well database (AWWCC/USGS)
- California: California DWR well completion reports
- Colorado: Colorado DWR well permit search (CDSS)
- Connecticut: Connecticut DCP well completion reports
- Washington, DC: DC DOEE well permits (records by request)
- Delaware: Delaware DNREC well permits viewer
- Florida: Florida DEP well construction (records at your water management district)
- Georgia: Georgia EPD Water Well Standards (records held by drillers/counties)
- Hawaii: Hawaii CWRM well records (release by request)
- Iowa: Iowa DNR private well records (Iowa Wells / GeoSam)
- Idaho: Idaho IDWR well construction search
- Illinois: Illinois State Geological Survey ILWATER
- Indiana: Indiana DNR water well record database
- Kansas: Kansas Geological Survey WWC5 well records
- Kentucky: Kentucky Geological Survey water well search
- Louisiana: Louisiana DENR water well registration (SONRIS)
- Massachusetts: Massachusetts DEP well drilling database
- Maryland: Maryland county health departments (via MGS well information)
- Maine: Maine Geological Survey well database
- Michigan: Michigan EGLE Wellogic
- Minnesota: Minnesota Well Index (Department of Health)
- Missouri: Missouri DNR well records (WIMS)
- Mississippi: Mississippi DEQ water wells map
- Montana: Montana Ground Water Information Center (GWIC)
- North Carolina: North Carolina DEQ GW-1 records (also at county health departments)
- North Dakota: North Dakota DWR well driller logs
- Nebraska: Nebraska DWEE registered groundwater wells
- New Hampshire: New Hampshire DES water well inventory
- New Jersey: New Jersey DEP well permitting (DataMiner reports)
- New Mexico: New Mexico OSE water rights reporting system (NMWRRS)
- Nevada: Nevada NDWR well log database
- New York: New York DEC water well program
- Ohio: Ohio DNR water well log search
- Oklahoma: Oklahoma OWRB well record search
- Oregon: Oregon WRD well report query
- Pennsylvania: Pennsylvania PaGWIS groundwater records (PaGEODE)
- Rhode Island: Rhode Island DOH private well records (by request)
- South Carolina: South Carolina DES Coastal Plain well database
- South Dakota: South Dakota DANR well completion reports
- Tennessee: Tennessee TDEC well log tracking system
- Texas: Texas TWDB driller's report database
- Utah: Utah Division of Water Rights well log search
- Virginia: Virginia local health district GW-2 records (DEQ well registration)
- Vermont: Vermont DEC well driller reports
- Washington: Washington Ecology well report viewer
- Wisconsin: Wisconsin DNR well construction records
- West Virginia: West Virginia county health departments (OEHS individual water supplies)
- Wyoming: Wyoming State Engineer's Office e-Permit well records
If your state is not listed, search for your state name plus "well construction report". The records office can usually pull your log from the address or the parcel number.