Latitude / longitude (WGS84)38.792175 / -122.727823Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Public well atlas
Explore documented wells and boreholes. Search source identifiers, inspect coordinates and compare available records.
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Category counts cover the reviewed snapshots. Search and other filters apply to the results below. Changing category keeps the other filters and clears an incompatible source filter.
Current scope · Geothermal
- Matching records
- 794
- Distinct source well IDs
- 794
- Source catalogues
- 2
Partial source coverage. Status and company roles are reported by each source, not independently verified as current. Unknown does not mean zero.
Boreholes and sidetracks may share a well ID. Counts describe these source snapshots, not market size. Catalogue labels describe the source, not territorial boundaries. Permitted locations may not have been drilled.
Records and map
Active filters
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Opening the map connects to OpenStreetMap. Pins use WGS84 coordinates; accuracy varies by source. Zoom into clusters, then select a pin. Coincident records open a filtered list.
Select 2–3 records on this page to compare.
Latitude / longitude (WGS84)41.671766 / -120.220016Operator in source snapshot: CalEnergy Operating CorporationRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)41.672063 / -120.220850Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)52.021200 / 4.422043Operator in source snapshot: Ammerlaan Real EstateRecorded spud date: 2010-05-26
Latitude / longitude (WGS84)52.007959 / 4.420268Operator in source snapshot: Gebr. Duijvestijn B.V.Recorded spud date: 2010-08-28
Latitude / longitude (WGS84)52.007959 / 4.420268Operator in source snapshot: Gebr. Duijvestijn B.V.Recorded spud date: 2010-09-21
Latitude / longitude (WGS84)52.007959 / 4.420268Operator in source snapshot: Gebr. Duijvestijn B.V.Recorded spud date: 2010-09-29
Latitude / longitude (WGS84)52.007975 / 4.420371Operator in source snapshot: Gebr. Duijvestijn B.V.Recorded spud date: 2010-11-20
Latitude / longitude (WGS84)52.020825 / 4.422512Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2018-08-21
Latitude / longitude (WGS84)52.020825 / 4.422512Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2019-07-04
Latitude / longitude (WGS84)52.020880 / 4.422456Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2018-04-30
Latitude / longitude (WGS84)52.020880 / 4.422456Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2018-07-19
Latitude / longitude (WGS84)52.020880 / 4.422456Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2018-07-23
Latitude / longitude (WGS84)52.020880 / 4.422456Operator in source snapshot: Ammerlaan Geothermie B.V.Recorded spud date: 2018-08-04
Latitude / longitude (WGS84)52.023693 / 4.237835Operator in source snapshot: Aardwarmte Vogelaer B.V.Recorded spud date: 2016-08-19
Latitude / longitude (WGS84)52.023757 / 4.237749Operator in source snapshot: Aardwarmte Vogelaer B.V.Recorded spud date: 2016-10-01
Latitude / longitude (WGS84)52.024376 / 4.236979Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2023-09-05
Latitude / longitude (WGS84)52.024376 / 4.236979Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2023-11-12
Latitude / longitude (WGS84)52.024376 / 4.236979Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2025-08-07
Latitude / longitude (WGS84)52.024449 / 4.236879Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2023-09-15
Latitude / longitude (WGS84)52.024449 / 4.236879Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2023-12-07
Latitude / longitude (WGS84)52.024449 / 4.236879Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2023-12-16
Latitude / longitude (WGS84)52.024449 / 4.236879Operator in source snapshot: Aardwarmte Vogelaer 2 B.V.Recorded spud date: 2025-07-09
Latitude / longitude (WGS84)38.836929 / -122.806854Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.837652 / -122.809385Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.840924 / -122.831756Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.847266 / -122.845641Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.840961 / -122.832121Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.835101 / -122.832755Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.835168 / -122.832723Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.844850 / -122.829190Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.838387 / -122.821769Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.835632 / -122.832693Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.844675 / -122.829669Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.838526 / -122.822042Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.838375 / -122.821905Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.839944 / -122.813090Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.849614 / -122.819250Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.849503 / -122.819250Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
Latitude / longitude (WGS84)38.847135 / -122.845744Operator in source snapshot: Not reported / not verifiedRecorded spud date: Not reported / not verified
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Explore measurements and research
These linked source collections have their own coverage and units. They are not automatically joined to the atlas selection.
Dataset library
Each dataset retains its source, access date, row count and reuse conditions. Filtered NDJSON is available for algorithm development.
Geothermal
CalGEM — California public geothermal wells
2,895 · Records in this category
Source accessed:
Reuse terms: review-source-terms
California Department of Conservation, Geologic Energy Management Division (CalGEM). Normalized by Wellficent.
TNO / NLOG — Netherlands boreholes
147 · Records in this category
5,758 · Records in snapshot
Source accessed:
Reuse terms: review-source-terms
Source: NLOG / TNO Geological Survey of the Netherlands. Administrative data normalized by Wellficent.
Sources and methodology
Public administrative records are normalized with stable source identifiers. Original operators, drilling contractors and reported owners remain separate roles. Dates describe source access or reported events; they do not establish live activity. Coordinates are transformed to WGS84 where needed. Confidential records and personal owner fields are excluded. See each source for coverage, attribution and reuse terms.
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Field tests and exploration drilling.
U.S. Department of Energy
Beyond the wellhead, context.
A source-linked view of global energy, wells and resources in seven languages.