New Hampshire Well Data › Carroll County

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

Name: Carroll County, New Hampshire water well statistics
Creator: New Hampshire Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 9,946 NHDES records · verified 2026-10-19

400 ftmedian well depth

222 ft–552 fttypical depth range

25 ftmedian static water level

9 gpmmedian yield (9,696 tests)

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How deep are wells in Carroll County, New Hampshire?

The median drilled well depth in Carroll County is 400 ft, based on 9,943 wells with recorded depths in the state NHDES database. Half of all wells fall between 222 ft and 552 ft; 90% are shallower than 772 ft. Wells drilled since 2016 have a median depth of 432 ft.

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

Applying published per-foot rates to the local median depth of 432 ft: drilling and casing alone typically runs $10,800–$28,080; a complete system including pump, pressure tank, and hookup typically runs $25,920–$43,200. Actual quotes depend on site access, geology, and casing requirements.

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 6,500 measurements.

How much water do wells in Carroll County produce?

The median tested yield is 9 gpm (middle half: 4 gpm–20 gpm), from 9,696 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 731 50–100 ft 687 100–150 ft 321 150–200 ft 357 200–300 ft 1,156 300–400 ft 1,534 400–600 ft 2,857 600+ ft 2,300

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Well records by ZIP code in Carroll County

Median depth, water level, and yield for each ZIP code with recorded wells.

Moultonborough (03254) — 939 wells, median 480 ft
East Wakefield (03830) — 775 wells, median 320 ft
Freedom (03836) — 703 wells, median 300 ft
Silver Lake (03875) — 603 wells, median 75 ft
Wolfeboro (03894) — 591 wells, median 402 ft
Center Ossipee (03814) — 523 wells, median 300 ft
Mirror Lake (03853) — 438 wells, median 505 ft
West Ossipee (03890) — 438 wells, median 63 ft
Sanbornville (03872) — 394 wells, median 364 ft
Wolfeboro Falls (03896) — 380 wells, median 415 ft
Ossipee (03864) — 368 wells, median 414 ft
Melvin Village (03850) — 326 wells, median 500 ft
Center Tuftonboro (03816) — 325 wells, median 423 ft
Center Conway (03813) — 323 wells, median 462 ft
Conway (03818) — 285 wells, median 420 ft
Glen (03838) — 278 wells, median 470 ft
Madison (03849) — 266 wells, median 423 ft
Jackson (03846) — 266 wells, median 503 ft
Effingham (03882) — 230 wells, median 340 ft
Center Sandwich (03227) — 202 wells, median 415 ft
Tamworth (03886) — 189 wells, median 402 ft
North Sandwich (03259) — 163 wells, median 440 ft
Eaton Center (03832) — 141 wells, median 503 ft
Intervale (03845) — 118 wells, median 360 ft
Chocorua (03817) — 108 wells, median 523 ft
Bartlett (03812) — 103 wells, median 303 ft
North Conway (03860) — 100 wells, median 546 ft
South Tamworth (03883) — 75 wells, median 413 ft

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.