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Historical produced water chemistry data compiled for selected oil fields in Los Angeles and Orange Counties, southern California


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Metzger, L.F., Morris, D., and Watson, E., 2020, Historical produced water chemistry data compiled for selected oil fields in Los Angeles and Orange Counties, southern California: U.S. Geological Survey data release,


This digital dataset contains historical geochemical and other information for 200 samples of produced water from 182 sites in 25 oil fields in Los Angeles and Orange Counties, southern California. Produced water is a term used in the oil industry to describe water that is produced as a byproduct along with the oil and gas. The locations from which these historical samples have been collected include 152 wells. Well depth and (or) perforation depths are available for 114 of these wells. Sample depths are available for two additional wells in lieu of well or perforation depths. Additional sample sites include four storage tanks, and two unidentifiable sample sources. One of the storage tank samples (Dataset ID 57) is associated with [...]


Point of Contact :
Loren F Metzger
Originator :
Loren F Metzger, Devin T Adsit-Morris, Elise Watson
Metadata Contact :
Loren F Metzger
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
California Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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ProdWtr_UIC_LosAngeles_Orange_Sites_Summary.xlsx 494.71 KB application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ProdWtr_UIC_LosAngeles_Orange_Sites_Summary.csv 60.05 KB text/csv
ProdWtr_UIC_LosAngeles_Orange_Geochemistry.xlsx 599.29 KB application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ProdWtr_UIC_LosAngeles_Orange_Geochemistry.csv 119.73 KB text/csv
Data-Dictionary_UIC_LosAngeles_Orange.xlsx 435.49 KB application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 5.01 KB application/zip


The data were compiled by the USGS California Oil, Gas, and Groundwater (COGG) project as part of the California State Water Resources Control Board’s Regional Monitoring Program of water quality in areas of oil and gas production. The historical data were compiled for forthcoming interpretative reports and publications that will compare historical produced water chemistry data and newly collected groundwater and produced water chemistry data in order to determine potential contrasts and overlap in water chemistry between oil-field water and groundwater at regional scales. These historical data are intended to be used to broadly characterize the range and central tendencies of produced water chemistry in comparison with groundwater from water wells. Because the collection and analysis methods and circumstances under which the historical samples were collected cannot be fully known, the intent is that the historical samples will be used in grouped analysis including many sample results rather than detailed interpretation of each individual sample, which may be affected by unknown sampling and analysis conditions. Caution should be used in basing interpretations of the data on single sample results.


Spatial Services

ScienceBase WMS


  • California Oil, Gas, and Groundwater
  • USGS California Water Science Center
  • USGS Data Release Products



Additional Information


Type Scheme Key
DOI doi:10.5066/P9JXQ3SD

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