⟁ California Well Data field records · 2026 survey

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Layne Christensen Company

Recorded as the driller on 2,363 water wells across 38 California counties in the California Department of Water Resources (DWR) Well Completion Reports database, most in Yolo County. Well-log records span 1943–2026.

2,363wells on record
44since 2022
38counties served
500 ftmedian depth

Counties served

Wells drilled by Layne Christensen Company, by county, across the full record.

CountyWells drilled
Yolo County 515
San Bernardino County 331
Riverside County 247
Los Angeles County 240
Solano County 154
Fresno County 97
Orange County 87
Kings County 82
Ventura County 78
Kern County 71
Sacramento County 61
San Diego County 45
Show all 38 counties
Sutter County 39
Tulare County 33
Napa County 32
Santa Clara County 30
San Mateo County 28
Stanislaus County 26
Contra Costa County 25
Mono County 21
Santa Barbara County 20
San Joaquin County 19
Merced County 14
Yuba County 13
Alameda County 10
Sonoma County 7
San Luis Obispo County 7
Santa Cruz County 7
Monterey County 6
Plumas County 4
Imperial County 3
Placer County 3
Inyo County 2
Butte County 2
Madera County 1
San Francisco County 1
Mendocino County 1
Colusa County 1

Well characteristics

Across the wells Layne Christensen Company has drilled, the median depth is 500 ft (middle half 260 ft–810 ft), median tested yield 1,500 gpm, and median static water level 142 ft below ground surface. These summarize the company's own filed logs, not a marketing claim.

Original drilling logs

Recent well logs filed by Layne Christensen Company, straight from the public DWR record:

"Records span 1943–2026" refers to the earliest and latest well logs attributed to this company in the DWR database — the state digitized older paper logs, so the first date is the oldest record on file, not necessarily the company's founding year.

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