The drilling companies that have actually completed wells within 15 miles of Harrison, ranked by how many, from the well logs each company filed with the state. Harrison is in Madison County.
In the last five years, 169 wells were completed within 15 miles of Harrison, by 16 different drilling companies. The most active was Red Tiger Drilling, with 48. The three busiest companies drilled 51 percent of them, with the rest spread across smaller outfits.
| Company | Wells within 15 mi | Latest | Closest well |
|---|---|---|---|
| Red Tiger Drilling | 48 | 2026 | 0 mi |
| Potts Drilling Inc | 20 | 2026 | 0 mi |
| Western Water Wells | 17 | 2026 | 1 mi |
| Okeefe Drilling Co | 15 | 2026 | 0 mi |
| Old Town Drilling | 14 | 2026 | 0 mi |
| Van Dyken Drilling Inc | 13 | 2025 | 1 mi |
| Diamond M Drilling Inc | 9 | 2026 | 2 mi |
| A-10 Drilling | 6 | 2025 | 2 mi |
| Graham Drilling Inc | 6 | 2025 | 4 mi |
| Vidic Drilling Inc | 6 | 2026 | 5 mi |
| Ak Drilling Inc | 5 | 2026 | 6 mi |
| Excel Pump And Well Inc. | 4 | 2022 | 4 mi |
| Boland Drilling | 1 | 2025 | 11 mi |
| Bridger Drilling Inc | 1 | 2025 | 11 mi |
| Eagle Drilling And Pump Service | 1 | 2023 | 13 mi |
| Lindsay Drilling Co Inc | 1 | 2022 | 14 mi |
Source: MBMG Ground Water Information Center well logs completed 2021 to 2026, counted by distance from the center of Harrison. Only logs that name a company are ranked. This is a count of public records, not a recommendation; see how to check a driller before you hire. For depth, yield and water level near a specific property, see Montana Water Report.
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