This document provides information on various methods for evaluating the performance of water operators, including the Management by Objectives method, Critical Incident method, Behaviorally Anchored Rating Scales, Behavioral Observation Scales, 360 Degree Feedback method, Checklist and Weighted Checklist method. For each method, key features and advantages/disadvantages are described. The document aims to educate on different approaches that can be used to appraise a water operator's job performance.