⟁ New Hampshire Well Data field records · 2026 survey

New Hampshire Well Data › Carroll County

Carroll County, New Hampshire: well depth, water level & drilling cost

✓ 10,150 NHDES records · verified 2026-08-23

400 ftmedian well depth
220 ft–550 fttypical depth range
25 ftmedian static water level
9 gpmmedian yield (9,902 tests)

How deep are wells in Carroll County, New Hampshire?

The median drilled well depth in Carroll County is 400 ft, based on 10,147 wells with recorded depths in the state NHDES database. Half of all wells fall between 220 ft and 550 ft; 90% are shallower than 760 ft. Wells drilled since 2016 have a median depth of 440 ft.

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

Applying published per-foot rates to the local median depth of 440 ft: drilling and casing alone typically runs $11,000–$28,600; a complete system including pump, pressure tank, and hookup typically runs $26,400–$44,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Carroll County?

The median static water level is 25 ft below ground surface (middle half of wells: 12 ft–40 ft), from 6,706 measurements.

How much water do wells in Carroll County produce?

The median tested yield is 9 gpm (middle half: 4 gpm–20 gpm), from 9,902 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 803 50–100 ft 693 100–150 ft 328 150–200 ft 362 200–300 ft 1,185 300–400 ft 1,561 400–600 ft 2,896 600+ ft 2,319
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Method: medians computed from NHDES records (NHDES Water Well Inventory, water-supply wells only (test/exploration and closed-loop geothermal wells excluded); depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.