Guidelines for Instrumentation and Measurements for Monitoring Dam Performance is a handy and comprehensive source of information about instrumentation and measurements for monitoring performance of all types of dams for dam owners, engineers, and regulators. This committee report 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. The 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.