Maryland Well Data › Calvert County

Calvert County, Maryland: well depth, owners & drilling cost

Name: Calvert County, Maryland water well statistics
Creator: Maryland Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 698 USGS NWIS records · verified 2026-08-27

324 ftmedian well depth

250 ft–420 fttypical depth range

1,255 ftmedian depth since 2016

How deep are wells in Calvert County, Maryland?

The median drilled well depth in Calvert County is 324 ft, based on 698 wells with recorded depths in the state USGS NWIS database. Half of all wells fall between 250 ft and 420 ft; 90% are shallower than 555 ft. Wells drilled since 2016 have a median depth of 1,255 ft.

How much does it cost to drill a well in Calvert County?

Applying published per-foot rates to the local median depth of 324 ft: drilling and casing alone typically runs $8,100–$21,060; a complete system including pump, pressure tank, and hookup typically runs $19,440–$32,400. Actual quotes depend on site access, geology, and casing requirements.

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Drilled depth distribution

0–50 ft 103 50–100 ft 12 100–150 ft 2 150–200 ft 9 200–300 ft 139 300–400 ft 235 400–600 ft 156 600+ ft 42

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Method: medians computed from USGS NWIS records (USGS NWIS groundwater inventory, water-supply wells only (monitoring wells, test holes and injection wells excluded), and only wells carrying a measured depth). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.