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Heat Hole 21

Partial source coverage. Status and company roles are reported by each source, not independently verified as current. Unknown does not mean zero.

Name / source ID
09790352
Borehole / source record ID
09790352
Sector
Geothermal
Derived purpose group
Temperature gradient
Operator in source snapshot
Not reported / not verified
Recorded spud date
Not reported / not verified
Recorded completion date
Not reported / not verified
Latitude / longitude (WGS84)
38.707233 / -122.705014
Source-reported measurements
Not reported / not verified
Status reported by source
P
Source accessed
2026-10-02
Source snapshot date
Not reported / not verified
Original coordinate reference system
EPSG:3310 (NAD83 / California Albers)
Source-reported measurements
Source-reported measurementsValueReference
Open source record ↗
JSON ↗Explore measurements ↗Data API ↗

Nearby wells and heat flow

These tools are descriptive: not forecasts, reserve estimates or investment advice. Source coverage is partial; unknown does not mean zero.

Nearby wells and heat flow
NameDistanceSource-reported measurementsSource catalogues
MM 40.34 kmNot reported / not verified mCalGEM — California public geothermal wells
BG 73-80.58 kmNot reported / not verified mCalGEM — California public geothermal wells
Heat Hole 151.16 kmNot reported / not verified mCalGEM — California public geothermal wells
MM 11.27 kmNot reported / not verified mCalGEM — California public geothermal wells
MM 52.01 kmNot reported / not verified mCalGEM — California public geothermal wells
MM 22.04 kmNot reported / not verified mCalGEM — California public geothermal wells
Heat Hole 22A2.41 kmNot reported / not verified mCalGEM — California public geothermal wells
TG 182.47 kmNot reported / not verified mCalGEM — California public geothermal wells
TG 652.50 kmNot reported / not verified mCalGEM — California public geothermal wells
TG 192.75 kmNot reported / not verified mCalGEM — California public geothermal wells
Heat Hole 222.80 kmNot reported / not verified mCalGEM — California public geothermal wells
TG 17B2.99 kmNot reported / not verified mCalGEM — California public geothermal wells

Subsurface temperature and heat flow

Compare bottom-hole temperatures with depth and see measured heat flow near wells: context for geothermal reuse.

Subsurface temperature and heat flow
NameDistanceSubsurface temperature and heat flowQuality flags
R24-P0201571.34 km154.00 mW/m2{"qualityScores":["Ux.Mx.-------"]}
R24-P0201551.56 km140.00 mW/m2{"qualityScores":["Ux.Mx.-------"]}
R24-P0201561.56 km167.00 mW/m2{"qualityScores":["Ux.Mx.-------"]}
R24-P0198471.88 km225.00 mW/m2{"qualityScores":["Ux.Mx.-------"]}
R24-P0201582.17 km270.00 mW/m2{"qualityScores":["Ux.Mx.-------"]}
w.

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