Medicine Lake Geothermal Area

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Medicine Lake Geothermal Area

Area Overview

Geothermal Area Profile

Location: California

Exploration Region: Cascades Geothermal Region

GEA Development Phase:

Coordinates: 41.57°, -121.57°

Resource Estimate

Mean Reservoir Temp:

Estimated Reservoir Volume:

Mean Capacity:

USGS Mean Reservoir Temp: 255°C528.15 K
491 °F
950.67 °R

USGS Estimated Reservoir Volume: 24 km³ [1]

USGS Mean Capacity: 366 MW [1]

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History and Infrastructure

Operating Power Plants: 0

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Developing Power Projects: 0

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Power Production Profile

Gross Production Capacity:

Net Production Capacity:

Owners  :

Power Purchasers :

Other Uses:

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Regulatory and Environmental Issues

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Exploration History

First Discovery Well

Completion Date:

Well Name:



Initial Flow Rate:
  • "c" is not declared as a valid unit of measurement for this property.
  • The given value was not understood.

Flow Test Comment:

Initial Temperature:

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Well Field Description

Well Field Information

Development Area:

Number of Production Wells:

Number of Injection Wells:

Number of Replacement Wells:

Average Temperature of Geofluid:

Sanyal Classification (Wellhead):

Reservoir Temp (Geothermometry):

Reservoir Temp (Measured):

Sanyal Classification (Reservoir):

Depth to Top of Reservoir:

Depth to Bottom of Reservoir:

Average Depth to Reservoir:

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Geology of the Area

Geologic Setting

Tectonic Setting:

Controlling Structure:

Topographic Features:

Brophy Model:

Moeck-Beardsmore Play Type:

Geologic Features

Modern Geothermal Features:

Relict Geothermal Features:

Volcanic Age:

Host Rock Age:

Host Rock Lithology:

Cap Rock Age:

Cap Rock Lithology:

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Geofluid Geochemistry


Salinity (low):

Salinity (high):

Salinity (average):

Brine Constituents:

Water Resistivity:

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NEPA-Related Analyses (1)

Below is a list of NEPA-related analyses that have been conducted in the area - and logged on OpenEI. To add an additional NEPA-related analysis, see the NEPA Database.


Document # Analysis
Applicant Application
CA-96062042 EIS Calpine Corporation 31 May 2000 USFS Geothermal/Power Plant
Geothermal/Well Field
Geothermal/Grid Connection

Exploration Activities (1)

Below is a list of Exploration that have been conducted in the area - and cataloged on OpenEI. Add.png Add a new Exploration Activity

Page Technique Activity Start Date Activity End Date Reference Material
Geothermal Literature Review At Medicine Lake Geothermal Area (1984) Geothermal Literature Review 1984 1984


  1. 1.0 1.1 1.2 U.S. Geological Survey. 2008. Assessment of Moderate- and High-Temperature Geothermal Resources of the United States. USA: U.S. Geological Survey. Report No.: Fact Sheet 2008-3082.

List of existing Geothermal Resource Areas.

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