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VOLUME 6 <br />ISSUE 2 <br />AUGUST 2018 <br /> <br />Introduction……………………………………….….. 1 <br />What the HEC? – Selecting the Best HEC model for the Job ….……………………………………………..2 <br />Factoring for Human Factors in Dam Safety Incidents and Failures …………..10 <br />Abandonment of Low-Level Outlet Conduits , Think it Through Before You Grout it Through……………………………..……………………………………………………..18 <br /> <br />1 <br /> <br />A SEMI-ANNUAL PUBLICATION FOR WESTERN DAM ENGINEERS <br /> <br />Upcoming ASDSO Webinar Dam Safety Training: <br />• Drone Technology Integrated into Dam Safety Inspections <br />and Evaluations, October 9, 2018 <br />• Why Embankments Crack and How to Fix Them, <br />November 13, 2018 <br />• How to Conduct a Successful PFMA - Lessons Learned <br />from Past Successes and Failures, December 11, 2018 <br />Upcoming ASDSO Classroom Technical Seminars <br />• Dam Safety 2018 Conference, Seattle, WA, <br />September 9-13, 2018 <br />Recent ASDSO On-Demand Workshop <br />• Human Factors in the Oroville Dam Spillway Incident - <br />ON-DEMAND <br />ASDSO Training Website Link <br />In this issue of the Western Dam Engineering <br />Technical Note, we present articles on when to use <br />HEC-HMS versus HEC-RAS, the impact of human <br />factors in dam safety incidents, and important issues <br />when considering abandoning low-level outlet <br />conduits. This quarterly newsletter is meant as an <br />educational resource for civil engineers who practice <br />primarily in rural areas of the western United States. <br />This publication focuses on technical articles specific <br />to the design, inspection, safety, and construction of <br />small dams. It provides general information. The <br />reader is encouraged to use the references cited and <br />engage other technical experts as appropriate. <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 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 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 arising from such use. <br /> <br /> The Western Dam Engineering Technical <br /> Note is sponsored by the following <br /> agencies: <br /> Colorado Division of Water Resources <br /> Montana Department of Natural Resources <br /> Wyoming State Engineer’s Office <br /> New Mexico Office of the State Engineer <br /> This Technical Note was written, compiled, <br /> and edited by AECOM in Denver, CO. <br /> <br /> Funding for the Technical Note has been <br /> provided by the FEMA National Dam Safety <br /> Act Assistance to States grant program. <br /> <br /> <br /> <br /> <br /> Review Board: <br /> <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; Charles Thompson, PE, Chief, <br /> Dam Safety Bureau, New Mexico; <br /> Mark Ogden, PE, Association of State Dam <br /> Safety Officials; and Matthew Lindon, PE, <br /> Loughlin Water Associates <br />