Paper No. 93-13
Presentation Time: 4:30 PM-4:45 PM
JARVIS, Todd, MWH Americas, Inc, 10619 S. Jordan Gateway, Salt Lake City, UT 84124,, HUNTOON, Peter, Boulder City, NV 89006, and LINDHOLM, Kathy Herbst, Boulder, CO

Anchor Dam, a 200-feet high, thin-arch concrete dam, located approximately 35 miles west of Thermopolis Wyoming, was constructed by the Bureau of Reclamation at a cost exceeding $5 million dollars during the dam building boom of the 1950s and 1960s. Sinkholes and earth fissures within the reservoir area continuously allowed drainage of the reservoir to karstified redbeds in the underlying Permian Goose Egg and Triassic Chugwater before, during and after construction. Additionally, attempts to plug solution-widened fractures in carbonate strata within the Pennsylvanian Tensleep Formation, which comprised the abutments, resulted in expensive change orders during construction. The reservoir and dam were doomed from the onset by these two karst systems. Karst were identified prior to and during dam construction by the Bureau of Reclamation.

2002 Denver Annual Meeting (October 27-30, 2002)
Session No. 93
Evaporite Karst and Engineering and Environmental Problems in the United States
Colorado Convention Center: A111/109
1:30 PM-5:30 PM, Monday, October 28, 2002

© Copyright 2002 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.