Kansas Well Data › Riley County
Riley County, Kansas: well depth, water level & drilling cost
✓ 1,766 KGS records · verified 2026-09-22
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How deep are wells in Riley County, Kansas?
The median drilled well depth in Riley County is 80 ft, based on 1,765 wells with recorded depths in the state KGS database. Half of all wells fall between 52 ft and 120 ft; 90% are shallower than 180 ft. Wells drilled since 2016 have a median depth of 100 ft.
How much does it cost to drill a well in Riley County?
Applying published per-foot rates to the local median depth of 100 ft: drilling and casing alone typically runs $2,500–$6,500; a complete system including pump, pressure tank, and hookup typically runs $6,000–$10,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Riley County?
The median static water level is 35 ft below ground surface (middle half of wells: 21 ft–70 ft), from 1,724 measurements.
How much water do wells in Riley County produce?
The median tested yield is 20 gpm (middle half: 10 gpm–40 gpm), from 1,402 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Riley County?
Contractors by number of wells completed in this county since 2016, per WWC-5 water well records filed with the Kansas Geological Survey.
| Driller | Wells since 2016 |
|---|---|
| Associated Drilling, Inc. | 92 |
| Haldeman Well Drlg. & Pump | 25 |
| Associated Drilling, Inc. #990 | 25 |
| Haldeman Well Drilling & Pump Service | 20 |
| Flint Hills Drilling | 16 |
| Blue Valley Drilling, Inc. | 15 |
| Flint Hills Drlg #914 | 14 |
| Associated Drlg | 13 |
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Well records by ZIP code in Riley County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Manhattan (66506) — 293 wells, median 50 ft
- Manhattan (66502) — 286 wells, median 58 ft
- Manhattan (66503) — 263 wells, median 130 ft
- Ogden (66517) — 252 wells, median 61 ft
- Leonardville (66449) — 207 wells, median 110 ft
- Randolph (66554) — 206 wells, median 99 ft
- Manhattan (66505) — 165 wells, median 160 ft
- Riley (66531) — 154 wells, median 100 ft
Method: medians computed from KGS records (WWC-5 water well records; monitoring, environmental, geothermal and test 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.