Oregon Well Data › Columbia County
Columbia County, Oregon: well depth, water level & drilling cost
✓ 6,586 OWRD records · verified 2026-09-28
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How deep are wells in Columbia County, Oregon?
The median drilled well depth in Columbia County is 160 ft, based on 5,784 wells with recorded depths in the state OWRD database. Half of all wells fall between 92 ft and 275 ft; 90% are shallower than 400 ft. Wells drilled since 2016 have a median depth of 181 ft.
How much does it cost to drill a well in Columbia County?
Applying published per-foot rates to the local median depth of 181 ft: drilling and casing alone typically runs $4,525–$11,765; a complete system including pump, pressure tank, and hookup typically runs $10,860–$18,100. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Columbia County?
The median static water level is 51 ft below ground surface (middle half of wells: 20 ft–120 ft), from 5,826 measurements.
How much water do wells in Columbia County produce?
The median tested yield is 14 gpm (middle half: 7 gpm–25 gpm), from 5,383 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Columbia County?
Companies by number of wells completed in this county since 2016, per filed well logs (Oregon Water Resources Department).
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Well records by ZIP code in Columbia County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Rainier (97048) — 1,488 wells, median 200 ft
- Scappoose (97056) — 1,344 wells, median 140 ft
- Clatskanie (97016) — 1,110 wells, median 120 ft
- Deer Island (97054) — 958 wells, median 225 ft
- Warren (97053) — 836 wells, median 148 ft
- Vernonia (97064) — 584 wells, median 90 ft
- Saint Helens (97051) — 207 wells, median 192 ft
- Columbia City (97018) — 121 wells, median 180 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.