Oregon Well Data › Polk County
Polk County, Oregon: well depth, water level & drilling cost
✓ 6,087 OWRD records · verified 2026-09-28
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How deep are wells in Polk County, Oregon?
The median drilled well depth in Polk County is 136 ft, based on 5,224 wells with recorded depths in the state OWRD database. Half of all wells fall between 78 ft and 221 ft; 90% are shallower than 325 ft. Wells drilled since 2016 have a median depth of 184 ft.
How much does it cost to drill a well in Polk County?
Applying published per-foot rates to the local median depth of 184 ft: drilling and casing alone typically runs $4,600–$11,960; a complete system including pump, pressure tank, and hookup typically runs $11,040–$18,400. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Polk County?
The median static water level is 28 ft below ground surface (middle half of wells: 15 ft–59 ft), from 5,578 measurements.
How much water do wells in Polk County produce?
The median tested yield is 11 gpm (middle half: 5 gpm–30 gpm), from 4,930 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Polk County?
Companies by number of wells completed in this county since 2016, per filed well logs (Oregon Water Resources Department).
| Driller | Wells since 2016 |
|---|---|
| DICKERSON WELL DRILLING | 95 |
| RON ROBINSON WELL DRILLING | 87 |
| MACK DRILLING CO INC | 80 |
| SIPPEL WELL DRILLING INC | 44 |
| JONES WELL DRILLING CO INC | 25 |
| BLUE WATER DRILLING CO INC | 24 |
| ALL SEASONS WELL DRILLING | 16 |
| CORVALLIS DRILLING CO INC | 10 |
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Well records by ZIP code in Polk County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Dallas (97338) — 1,888 wells, median 159 ft
- Independence (97351) — 1,308 wells, median 65 ft
- Salem (97304) — 1,116 wells, median 203 ft
- Monmouth (97361) — 565 wells, median 118 ft
- Falls City (97344) — 531 wells, median 140 ft
- Willamina (97396) — 408 wells, median 149 ft
- Rickreall (97371) — 389 wells, median 156 ft
- Grand Ronde (97347) — 107 wells, median 90 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.