Well depth by state and county
When a well is drilled, the driller files a log with the state: how deep the hole went, how far down the water stood when it was finished, and how much it pumped on test. These pages sum up those logs by county, so you can see how deep wells around a piece of land usually go. They are a separate record from water rights: most household wells hold no right but still have a log.
Well-log counts are temporarily unavailable.
How to read these numbers
Depth
The total or completed depth the driller recorded, in feet below the ground. A median is the middle well: half the logs in the area are shallower and half deeper. The “half between” range is the middle half of the logs, which leaves out the odd very shallow or very deep hole.
Water level when drilled
The static water level: how far below the ground the water settled in the finished well before pumping. It is one reading, taken when the well was drilled, and every figure here carries the year it was taken. Water tables rise and fall with the seasons, drought and nearby pumping, so a 1975 reading is not today's level. For repeat measurements over time, the USGS and some states run monitoring wells; those are left out of these pages.
Where the dots are
Many older logs give only a legal description (township, range, section and quarter calls), so the state places the well at the centre of that square. Every log keeps the state's own location method:
- GPS location. Located by GPS.
- Placed from a map. Placed from a map, survey footages or an address; usually within a few hundred feet.
- Quarter-section centre. Placed at the centre of the quarter or quarter-quarter section on the log, so it can be up to about a quarter mile from the actual well.
- Section centre. Placed at the centre of the section (one square mile) on the log, so it can be up to about three quarters of a mile from the actual well.
- Location method not recorded. The state records coordinates for this log but not how they were found.
When most logs around a point are section or quarter centres, the map says “wells recorded in this area” rather than pointing at a nearest well, because the nearest dot may be a well half a mile away.
What is left out
Holes that are not water-supply wells (monitoring and observation wells, geotechnical and test holes, closed-loop heat-exchange wells, dewatering and remediation wells), dry holes, permits that were never built, reports that repeat a well with its own log, logs with neither a depth nor a water level, and values that cannot be right: a depth over 5,000 feet, or a water level deeper than the well. Each state page lists how many were dropped for each reason.
Privacy
Well logs name the landowner and often the street address and directions to the house. None of that is read or republished here: only the depth, water level, yield, date, use, location method and the link to the state's own record.
Sources by state
- Montana: not in this refresh.
- Colorado: not in this refresh.
- Idaho: not in this refresh.
- Utah: Utah's Division of Water Rights publishes well locations in bulk, but depth and water levels only on each well's own page.
- Oregon: not in this refresh.
- Nevada: Nevada's well driller report service was not answering when this refresh ran, so its logs are left out until it can be read and checked.
- Kansas: not in this refresh.
- Nebraska: not in this refresh.
- South Dakota: not in this refresh.
Data refreshed October 12, 2026. Logs are copied as the states publish them and are not checked well by well; the official log linked from each well is the record to rely on.