Prepared by the Task Committee on Instrumentation and Monitoring Dam Performance of the Hydropower Committee of the Energy Division of ASCE. This report is a handy and comprehensive source of information for dam owners, engineers, and regulators about instrumentation and measurements for monitoring performance of all types of dams. It presents the methodology and process for the selection, measurement instruments and techniques, installation, operation, maintenance, use, and evaluation of instrumentation and measurement systems for dams, appurtenant structures, their foundations, and environment. Topics include: factors affecting dam performance, means and methods of monitoring dam performance, planning and implementation of a monitoring program, data evaluation and reporting, and decision making. Case histories of instrumentation and monitoring programs at specific dams are provided for the reader. Product Review "I highly recommend this comprehensive reference on instrumentation used to evaluate dam performance. All owners, engineers, and regulators of dams should own a copy of this book." ?Fred Sage, Field Branch Chief, California Division of Safety of Dams

MOP 135 provides practical information on the process of using instrumented monitoring to determine how well a dam is performing.