New Hampshire Well Data › Grafton County
Grafton County, New Hampshire: well depth, water level & drilling cost
✓ 8,705 NHDES records · verified 2026-10-19
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How deep are wells in Grafton County, New Hampshire?
The median drilled well depth in Grafton County is 345 ft, based on 8,704 wells with recorded depths in the state NHDES database. Half of all wells fall between 240 ft and 500 ft; 90% are shallower than 600 ft. Wells drilled since 2016 have a median depth of 405 ft.
How much does it cost to drill a well in Grafton County?
Applying published per-foot rates to the local median depth of 405 ft: drilling and casing alone typically runs $10,125–$26,325; a complete system including pump, pressure tank, and hookup typically runs $24,300–$40,500. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Grafton County?
The median static water level is 20 ft below ground surface (middle half of wells: 15 ft–40 ft), from 3,391 measurements.
How much water do wells in Grafton County produce?
The median tested yield is 8 gpm (middle half: 3 gpm–20 gpm), from 8,390 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
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Well records by ZIP code in Grafton County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Bristol (03222) — 593 wells, median 405 ft
- Canaan (03741) — 582 wells, median 325 ft
- Littleton (03561) — 484 wells, median 300 ft
- Plymouth (03264) — 451 wells, median 420 ft
- Enfield (03748) — 399 wells, median 300 ft
- Franconia (03580) — 399 wells, median 400 ft
- Bethlehem (03574) — 335 wells, median 360 ft
- Campton (03223) — 323 wells, median 456 ft
- Thornton (03285) — 322 wells, median 500 ft
- Ashland (03217) — 315 wells, median 420 ft
- Holderness (03245) — 307 wells, median 385 ft
- North Haverhill (03774) — 301 wells, median 325 ft
- Lisbon (03585) — 299 wells, median 280 ft
- Hebron (03241) — 268 wells, median 405 ft
- Lyme (03768) — 261 wells, median 280 ft
- Sugar Hill (03586) — 256 wells, median 280 ft
- Enfield Center (03749) — 254 wells, median 305 ft
- Etna (03750) — 254 wells, median 305 ft
- Orford (03777) — 246 wells, median 280 ft
- Rumney (03266) — 243 wells, median 405 ft
- Grafton (03240) — 222 wells, median 363 ft
- Lebanon (03766) — 186 wells, median 225 ft
- Monroe (03771) — 171 wells, median 305 ft
- Bath (03740) — 161 wells, median 300 ft
- Wentworth (03282) — 126 wells, median 444 ft
- Lyme Center (03769) — 121 wells, median 320 ft
- Warren (03279) — 115 wells, median 400 ft
- Pike (03780) — 108 wells, median 300 ft
- Piermont (03779) — 104 wells, median 400 ft
- West Lebanon (03784) — 87 wells, median 245 ft
- Lebanon (03756) — 80 wells, median 213 ft
- Woodstock (03293) — 76 wells, median 445 ft
- North Woodstock (03262) — 70 wells, median 323 ft
- Haverhill (03765) — 69 wells, median 320 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.