USGS | COGG

Results from several COGG studies have been converted into 3D models to allow for better visualization of study results.

Click the "Select" tab to select map layers.

Map Layers

Geophysical logs affected by disposal sumps

Geophysical logs affected by injection

Model boundary for the depth to the base of the Tulare Formation

Model boundary for shallow groundwater salinity

Model boundary for groundwater salinity near Fruitvale and Rosedale Ranch

Airborne electromagnetic flight lines

Rivers, Canals, and Other Water Bodies

3D Model Boundaries


	Depth to the Base of the Tulare Formation
	Shallow Groundwater Salinity
	Subsurface Salinity in the Vicinity of Fruitvale and Rosedale Ranch Oil Fields

Airborne Electromagnetic Flight Lines

Related Web Page: 3D Characteristics of the Aquifer System Adjacent to Lost Hills and North and South Belridge Oil Fields

**Data Source:** Geological, geochemical and geophysical data from the Lost Hills and Belridge oil fields.

	Flight Lines

Cross Section Shown Within 3D Model of Fruitvale and Rosedale Ranch Oil Fields

Related Web Page: Cross Section of Fruitvale and Rosedale Ranch Groundwater Salinity

**Data Source:** Groundwater salinity mapping using geophysical log analysis within the Fruitvale and Rosedale Ranch oil fields, Kern County, California, USA.

	Cross Section

Geophysical Log Affected by Disposal Sumps

Geophysical log: A profile of electrical measurements in a borehole collected when an oil, injection, or observation well is drilled. A geophysical log can be used to estimate groundwater salinity and depths of geologic units.

Related Web Page: 3D Characteristics of the Aquifer System Adjacent to Lost Hills and North and South Belridge Oil Fields

**Data Source:** Geological, geochemical and geophysical data from the Lost Hills and Belridge oil fields.

Geophysical Log Affected by Injection

Geophysical log: A profile of electrical measurements in a borehole collected when an oil, injection, or observation well is drilled. A geophysical log can be used to estimate groundwater salinity and depths of geologic units.

Related Web Page: 3D Characteristics of the Aquifer System Adjacent to Lost Hills and North and South Belridge Oil Fields

**Data Source:** Geological, geochemical and geophysical data from the Lost Hills and Belridge oil fields.

Fruitvale Oil Field

**Comments:** Boundary of the Fruitvale Oil Field.

**Data Source:** CalGEM Field Admin Boundaries

	Oil Field

Rosedale Ranch Oil Field

**Comments:** Boundary of the Rosedale Ranch Oil Field.

**Data Source:** CalGEM Field Admin Boundaries

	Oil Field

Lost Hills Oil Field

**Comments:** Boundary of the Lost Hills Oil Field.

**Data Source:** CalGEM Field Admin Boundaries

	Oil Field

Belridge Oil Field

Rivers, Canals, and Other Water Bodies