Skip Links

USGS HomeContact USGSSearch USGS

Open-File Report 2014–1201

Pubs Warehouse

# Geologic and Geophysical Data for Wells Drilled at Raft River Valley, Cassia County, Idaho, in 1977–1978 and Data for Wells Drilled Previously

#### By Manuel Nathenson, Thomas C. Urban, and Harry R. Covington

| Abstract
In order to better define the size of the thermal anomaly in the Raft River Valley, Idaho, the U.S. Geological Survey drilled a series of intermediate-depth (nominal 500-ft depth) wells in 1977 and 1978. This report presents geologic, geophysical, and temperature data for these drill holes, along with data for five wells drilled by the Idaho National Engineering Laboratory with U.S. Department of Energy funding. Data previously reported for other drill holes are also included in order to make them available as digital files.

For purposes of defining the thermal anomaly for the geothermal system, temperature gradients are calculated over long depth intervals on the basis of the appearance of reasonably linear segments on a temperature versus depth plot. Temperature versus depth data for some drill holes can be represented by a single gradient, whereas others require multiple gradients to match the data. Data for some drill holes clearly reflect vertical flows of water in the formation surrounding the drill holes, and water velocities are calculated for these drill holes. Within The Narrows area, temperature versus depth data show reversals at different depths in different drill holes. In the main thermal area, temperatures in intermediate-depth drill holes vary approximately linearly but with very high values of temperature gradient. Temperature gradients on a map of the area can be reasonably divided into a large area of regional gradients and smaller areas defining the thermal anomalies. | First posted October 31, 2014
-  **Report** PDF (3.7 MB) 
-  **Appendix A** PDF (57 kB) 
-  **Figures** PDF (30.2 MB) 
-  **Tables** ZIP (2.8 MB) 
-  **Appendix B** PDF (46 kB) 
-  **Figures** PDF (1.2 MB) 
-  **Tables** ZIP (1.3 MB) 

**For additional information, contact:**       Director, Volcano Science Center       4230 University Drive          Anchorage, Alaska 99508http://volcanoes.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge. More information about viewing, downloading, and printing report files can be found here. |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

### Suggested citation:

Nathenson, M., Urban, T.C., and Covington, H.R., 2014, Geologic and geophysical data for wells drilled at Raft River Valley, Cassia County, Idaho, in 1977–1978 and data for wells drilled previously: U.S. Geological Survey Open-File Report 2014-1201, 30 p., *https://dx.doi.org/10.3133/ofr20141201*.

ISSN 2331-1258 (online)

----

### Contents

Abstract

Introduction

Methods

Drill Hole Data

Temperatures in Drill Holes by Area

Conclusions

Acknowledgments

References Cited

Appendix A. Lithologic, geophysical, and temperature logs for H-series of wells

Appendix B. Temperature logs for other wells

AccessibilityFOIAPrivacyPolicies and Notices

U.S. Department of the Interior |            U.S. Geological Survey           	URL: *http://pubsdata.usgs.gov/pubs/of/2014/1201/index.html*            Page Contact Information: GS Pubs Web Contact           	Page Last Modified: Wednesday, 07-Dec-2016 19:39:30 EST