⟁ Oregon Well Data field records · 2026 survey

Oregon Well Data › Umatilla County

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

✓ 9,943 OWRD records · verified 2026-06-30

195 ftmedian well depth
105 ft–325 fttypical depth range
48 ftmedian static water level
50 gpmmedian yield (8,616 tests)

How deep are wells in Umatilla County, Oregon?

The median drilled well depth in Umatilla County is 195 ft, based on 9,384 wells with recorded depths in the state OWRD database. Half of all wells fall between 105 ft and 325 ft; 90% are shallower than 542 ft. Wells drilled since 2016 have a median depth of 227 ft.

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

Applying published per-foot rates to the local median depth of 227 ft: drilling and casing alone typically runs $5,675–$14,755; a complete system including pump, pressure tank, and hookup typically runs $13,620–$22,700. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Umatilla County?

The median static water level is 48 ft below ground surface (middle half of wells: 22 ft–105 ft), from 9,120 measurements.

How much water do wells in Umatilla County produce?

The median tested yield is 50 gpm (middle half: 30 gpm–100 gpm), from 8,616 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 548 50–100 ft 1,496 100–150 ft 1,553 150–200 ft 1,155 200–300 ft 1,860 300–400 ft 989 400–600 ft 1,013 600+ ft 770

Who drills wells in Umatilla County?

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

DrillerWells since 2016
ZOLLMAN'S LARRY BURD WELL DRILLING LLC426
WATER WELL DEVELOPING & SURVEYS199
COURTNEY WELL DRILLING, LLC114
HARDING DRILLING INC28
HARDING DRILLING CO13
EARTH & WATER WORKS13
PREPARED BY OWRD STAFF13
K CONSULTING12

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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.