⟁ Oregon Well Data field records · 2026 survey

Oregon Well Data › Union County

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

✓ 3,822 OWRD records · verified 2026-06-30

165 ftmedian well depth
100 ft–300 fttypical depth range
23 ftmedian static water level
25 gpmmedian yield (3,289 tests)

How deep are wells in Union County, Oregon?

The median drilled well depth in Union County is 165 ft, based on 3,465 wells with recorded depths in the state OWRD database. Half of all wells fall between 100 ft and 300 ft; 90% are shallower than 486 ft. Wells drilled since 2016 have a median depth of 260 ft.

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

Applying published per-foot rates to the local median depth of 260 ft: drilling and casing alone typically runs $6,500–$16,900; a complete system including pump, pressure tank, and hookup typically runs $15,600–$26,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Union County?

The median static water level is 23 ft below ground surface (middle half of wells: 11 ft–62 ft), from 3,572 measurements.

How much water do wells in Union County produce?

The median tested yield is 25 gpm (middle half: 15 gpm–50 gpm), from 3,289 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 197 50–100 ft 613 100–150 ft 680 150–200 ft 496 200–300 ft 590 300–400 ft 384 400–600 ft 280 600+ ft 225

Who drills wells in Union County?

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

DrillerWells since 2016
EARTH & WATER WORKS215
ELKHORN DRILLING INC67
COURTNEY WELL DRILLING, LLC20
ZOLLMAN'S LARRY BURD WELL DRILLING LLC15
RIVERSIDE INC12
STEVEN J COLEY8
MARCIEL WELL DRILLING & PUMPS3
CARPENTER DRILLING INC3

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Looking at a specific property in Union County?

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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.