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VOLUME 3 <br />ISSUE 1 <br />February 2015 <br /> <br />Introduction……………………………………….….. 1 <br />Sinkholes: The Hole Story…Issues are Deeper than <br />you Think………………………………………………2 <br />Letting it All Out: Hydraulic Design of Outlet Works………………………....………….8 <br />Soil Characterization (Part 3) - Shear Strength Characterization for Slope Stability <br />Analyses …………………………………………………………………………...…………. 15 <br /> <br />1 <br />A QUARTERLY PUBLICATION FOR WESTERN DAM ENGINEERS <br />Comments/Feedback/Suggestions? <br />Email Colorado Dam Safety to submit feedback on Articles. <br />Please use article title as the subject of the email. <br />Upcoming ASDSO Webinar Dam Safety Training: <br />• Designing Slope Protection for Dams and Levees, Mar 9, 2015 <br />• Intro to Earthquake Engineering for Dams, April 7, 2015 <br />Upcoming Classroom Technical Seminars: <br />• Dam Failures and Lessons Learned, Mar 3-5, 2015, <br /> P. Schweiger, J. Cyganiewicz, & D. Miller, New Orleans, LA <br />• HEC-HMS, Mar 31 – April 2, Dr. A. Miller & A. Hess, <br />Seattle, WA <br />ASDSO Training Website Link <br /> <br />Need help reviewing or writing dam specifications? <br />Download Dam Specifications Review Tool here <br /> <br />In this issue of the Western Dam Engineering <br />Technical Note, we present articles on sinkholes <br />related to dams, outlet works design considerations, <br />and shear strength characterization. Most of these <br />articles draw on previously published articles in this <br />newsletter. This newsletter is meant as an educational <br />resource for civil engineers who practice primarily in <br />rural areas of the western United States. This <br />publication focuses on technical articles specific to <br />small and medium dams. It provides general <br />information. The reader is encouraged to use the <br />references cited and engage other technical experts <br />as appropriate. <br /> <br /> <br /> The Western Dam Engineering Technical <br /> Note is sponsored by the following <br /> agencies: <br /> Wyoming State Engineer’s Office <br /> Colorado Division of Water Resources <br /> Montana Department of Natural <br />Resources <br /> This Technical Note was compiled, written, <br /> and edited by AECOM in Denver, <br /> Colorado <br /> Funding for the Technical Note has been <br /> provided by the FEMA National Dam Safety <br /> Act Assistance to States grant program. <br /> Article Contributors: <br /> AECOM: Jessie Drayton; Chris Shrimpton; <br /> Julie Heitland; Jennifer Williams, PE; <br /> John France, PE; Frank Lan, PhD, PE <br /> Editorial Review Board: <br />Michele Lemieux, PE, Montana Dam Safety <br />Program Supervisor; Bill McCormick, PE, PG, <br />Colorado Chief Dam Safety Branch; <br />Mike Hand, PE, Wyoming Dam Safety <br /> Program; Mark Ogden, PE, Association <br /> of State Dam Safety Officials; <br /> Matthew Lindon, PE, Loughlin Water <br /> Associates; and Steve Becker, PE, <br /> Natural Resources Conservation Service <br /> <br />The material in this publication has been prepared in accordance with generally recognized engineering principles and practices, and is for general information only. The information <br />presented should not be used without first securing competent advice from qualified professionals with respect to its suitability for any general or specific application. No reference made in <br />this publication constitutes an endorsement or warranty thereof by AECOM or sponsors of this newsletter. Anyone using the information presented in this newsletter assumes all liability <br />arising from such use.