⟁ Oregon Well Data field records · 2026 survey

Oregon Well Data › Benton County

Benton County, Oregon: well depth, water level & drilling cost

✓ 10,889 OWRD records · verified 2026-08-14

120 ftmedian well depth
60 ft–225 fttypical depth range
22 ftmedian static water level
15 gpmmedian yield (9,122 tests)

How deep are wells in Benton County, Oregon?

The median drilled well depth in Benton County is 120 ft, based on 9,717 wells with recorded depths in the state OWRD database. Half of all wells fall between 60 ft and 225 ft; 90% are shallower than 355 ft. Wells drilled since 2016 have a median depth of 140 ft.

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

Applying published per-foot rates to the local median depth of 140 ft: drilling and casing alone typically runs $3,500–$9,100; a complete system including pump, pressure tank, and hookup typically runs $8,400–$14,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Benton County?

The median static water level is 22 ft below ground surface (middle half of wells: 12 ft–42 ft), from 9,690 measurements.

How much water do wells in Benton County produce?

The median tested yield is 15 gpm (middle half: 7 gpm–30 gpm), from 9,122 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 1,780 50–100 ft 2,201 100–150 ft 1,669 150–200 ft 1,090 200–300 ft 1,459 300–400 ft 752 400–600 ft 640 600+ ft 126

Who drills wells in Benton County?

Companies by number of wells completed in this county since 2016, per filed well logs (Oregon Water Resources Department).

DrillerWells since 2016
CORVALLIS DRILLING CO INC233
JONES WELL DRILLING CO INC87
MID VALLEY DRILLING INC71
WEST COAST WELL DRILLING LLC66
M & M WELL DRILLING29
NUGENT DRILLING CO LLC29
SIPPEL WELL DRILLING INC26
NUGENT DRILLING CO22

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Method: medians computed from OWRD records (water wells only (log type 'Water Well' — monitoring wells and geotechnical holes 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.