Oregon Well Data › Marion County
Marion County, Oregon: well depth, water level & drilling cost
✓ 27,467 OWRD records · verified 2026-10-26
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How deep are wells in Marion County, Oregon?
The median drilled well depth in Marion County is 135 ft, based on 24,279 wells with recorded depths in the state OWRD database. Half of all wells fall between 88 ft and 229 ft; 90% are shallower than 345 ft. Wells drilled since 2016 have a median depth of 190 ft.
How much does it cost to drill a well in Marion County?
Applying published per-foot rates to the local median depth of 190 ft: drilling and casing alone typically runs $4,750–$12,350; a complete system including pump, pressure tank, and hookup typically runs $11,400–$19,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Marion County?
The median static water level is 35 ft below ground surface (middle half of wells: 18 ft–70 ft), from 25,005 measurements.
How much water do wells in Marion County produce?
The median tested yield is 30 gpm (middle half: 15 gpm–60 gpm), from 22,504 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Marion County?
Companies by number of wells completed in this county since 2016, per filed well logs (Oregon Water Resources Department).
| Driller | Wells since 2016 |
|---|---|
| MACK DRILLING CO INC | 663 |
| SIPPEL WELL DRILLING INC | 310 |
| WESTERBERG DRILLING | 227 |
| JONES WELL DRILLING CO INC | 221 |
| ALL SEASONS WELL DRILLING | 130 |
| RON ROBINSON WELL DRILLING | 75 |
| GROSSEN'S WELL DRILLING | 69 |
| R STADELI & SONS WELL & PUMP INC | 59 |
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Well records by ZIP code in Marion County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Jefferson (97352) — 3,029 wells, median 85 ft
- Salem (97317) — 2,709 wells, median 168 ft
- Salem (97306) — 2,442 wells, median 213 ft
- Silverton (97381) — 2,150 wells, median 208 ft
- Turner (97392) — 1,942 wells, median 165 ft
- Salem (97305) — 1,557 wells, median 118 ft
- Aumsville (97325) — 1,536 wells, median 70 ft
- Mount Angel (97362) — 1,264 wells, median 178 ft
- Salem (97303) — 1,154 wells, median 100 ft
- Gervais (97026) — 1,075 wells, median 130 ft
- Salem (97310) — 1,065 wells, median 87 ft
- Scotts Mills (97375) — 922 wells, median 233 ft
- Woodburn (97071) — 861 wells, median 129 ft
- Donald (97020) — 797 wells, median 173 ft
- Salem (97302) — 796 wells, median 191 ft
- Aurora (97002) — 715 wells, median 134 ft
- Salem (97313) — 711 wells, median 90 ft
- Keizer (97307) — 655 wells, median 60 ft
- Sublimity (97385) — 597 wells, median 220 ft
- Saint Paul (97137) — 530 wells, median 145 ft
- Mehama (97384) — 516 wells, median 151 ft
- Gates (97346) — 345 wells, median 120 ft
- Salem (97314) — 264 wells, median 90 ft
- Salem (97301) — 255 wells, median 87 ft
- Salem (97312) — 81 wells, median 40 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.