Washington Well Data › Okanogan County
Okanogan County, Washington: well depth, water level & drilling cost
✓ 10,891 Ecology records · verified 2026-10-02
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How deep are wells in Okanogan County, Washington?
The median drilled well depth in Okanogan County is 142 ft, based on 10,819 wells with recorded depths in the state Ecology database. Half of all wells fall between 74 ft and 280 ft; 90% are shallower than 407 ft. Wells drilled since 2016 have a median depth of 203 ft.
How much does it cost to drill a well in Okanogan County?
Applying published per-foot rates to the local median depth of 203 ft: drilling and casing alone typically runs $5,075–$13,195; a complete system including pump, pressure tank, and hookup typically runs $12,180–$20,300. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Okanogan County?
The median static water level is 50 ft below ground surface (middle half of wells: 24 ft–90 ft), from 1,532 measurements.
How much water do wells in Okanogan County produce?
The median tested yield is 10 gpm (middle half: 3 gpm–25 gpm), from 1,715 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Okanogan County?
Licensed drillers by number of wells completed in this county since 2016, per filed well reports (license roster: Washington Department of Ecology).
| Driller | Wells since 2016 |
|---|---|
| Shawn Oconnell | 410 |
| Charles Miller | 207 |
| Marshall Miller | 138 |
| Jay Lightfoot | 119 |
| Justin Ricard | 108 |
| Bill Moomaw | 98 |
| Joseph Dunkin | 90 |
| Audie Mccurdy | 88 |
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Well records by ZIP code in Okanogan County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Tonasket (98855) — 1,622 wells, median 200 ft
- Winthrop (98862) — 1,367 wells, median 120 ft
- Oroville (98844) — 894 wells, median 200 ft
- Twisp (98856) — 889 wells, median 100 ft
- Omak (98841) — 733 wells, median 145 ft
- Brewster (98812) — 654 wells, median 190 ft
- Mazama (98833) — 517 wells, median 60 ft
- Riverside (98849) — 499 wells, median 165 ft
- Okanogan (98840) — 495 wells, median 171 ft
- Carlton (98814) — 491 wells, median 91 ft
- Wauconda (98859) — 449 wells, median 202 ft
- Pateros (98846) — 371 wells, median 124 ft
- Malott (98829) — 325 wells, median 107 ft
- Methow (98834) — 289 wells, median 128 ft
- Conconully (98819) — 239 wells, median 84 ft
- Loomis (98827) — 234 wells, median 123 ft
- Nespelem (99155) — 191 wells, median 142 ft
- Coulee Dam (99116) — 73 wells, median 203 ft
Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions 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.