Summary About the Position: Works as a shift head lock and dam operator at a Corps of Engineers navigation facility within the Inland Marine Transportation System (IMTS) and operates electrically, electronically, or hydraulically controlled lock or lock and dam gates, control valves, and other associated equipment required for passage of a variety of private and commercial traffic through the lock structure and the maintenance of required pool levels. Responsibilities Works as a shift head lock and dam operator at a Corps of Engineers navigation facility within the Inland Marine Transportation System (IMTS). Exercises primary authority over the use of lock through issuance of instructions to tow boat captains and other craft operators, the setting of precedence of entry, and maintaining proper procedural operation. Handles bow or stern lines, walk lines to proper locations along wall and snub lines to assist pilot in maneuvering craft into position. Observes weather conditions, conditi...