Oregon Well Data › Umatilla County
Umatilla County, Oregon: well depth, water level & drilling cost
✓ 9,964 OWRD records · verified 2026-09-28
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How deep are wells in Umatilla County, Oregon?
The median drilled well depth in Umatilla County is 195 ft, based on 9,402 wells with recorded depths in the state OWRD database. Half of all wells fall between 105 ft and 325 ft; 90% are shallower than 543 ft. Wells drilled since 2016 have a median depth of 228 ft.
How much does it cost to drill a well in Umatilla County?
Applying published per-foot rates to the local median depth of 228 ft: drilling and casing alone typically runs $5,700–$14,820; a complete system including pump, pressure tank, and hookup typically runs $13,680–$22,800. 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 9,147 measurements.
How much water do wells in Umatilla County produce?
The median tested yield is 50 gpm (middle half: 30 gpm–100 gpm), from 8,635 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
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).
| Driller | Wells since 2016 |
|---|---|
| ZOLLMAN'S LARRY BURD WELL DRILLING LLC | 426 |
| WATER WELL DEVELOPING & SURVEYS | 203 |
| COURTNEY WELL DRILLING, LLC | 130 |
| HARDING DRILLING INC | 28 |
| EARTH & WATER WORKS | 14 |
| PREPARED BY OWRD STAFF | 13 |
| HARDING DRILLING CO | 13 |
| K CONSULTING | 12 |
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Well records by ZIP code in Umatilla County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Hermiston (97838) — 3,518 wells, median 181 ft
- Milton Freewater (97862) — 2,070 wells, median 120 ft
- Pendleton (97801) — 1,258 wells, median 265 ft
- Weston (97886) — 558 wells, median 211 ft
- Stanfield (97875) — 431 wells, median 200 ft
- Umatilla (97882) — 429 wells, median 240 ft
- Echo (97826) — 421 wells, median 515 ft
- Pilot Rock (97868) — 324 wells, median 265 ft
- Adams (97810) — 222 wells, median 231 ft
- Meacham (97859) — 208 wells, median 250 ft
- Helix (97835) — 154 wells, median 293 ft
- Athena (97813) — 72 wells, median 350 ft
- Ukiah (97880) — 70 wells, median 260 ft
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.