The state of Maryland keeps a log of every well ever drilled. We read all 26,203 of them.
Maryland well logs, made useful.
Every Maryland groundwater well the U.S. Geological Survey has inventoried and measured — how deep it went and what it draws from — gathered around one location.
✓ Verified against USGS NWIS · 2026-08-27
What you can answer here
- How deep will my well need to be? Median and range of actual drilled depths near you — not national averages.
- What will it cost? Local median depth × published per-foot rates, with the math shown.
- Will it produce enough water? Yields from pump tests on nearby wells.
- Who drills around here? The drillers who actually filed recent well logs in your county.
Every figure here comes from the USGS National Water Information System groundwater site inventory — the state's official well-log repository. We index those same records by location so you can start from an address, and every well links back to its original filed log.
See every recorded well near any Maryland address: depths, water levels, yields, and links to the original driller's logs — all in one report.
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