JOB SUMMARY: This is an open and continuous announcement. See Additional Information section for more information. Applications will expire every 90 days. To remain active for consideration, applicants must resubmit their application. Positions may be filled at one or more of the duty locations included in this announcement. Final determination of the duty location will be made at the time of the job offer. For more information, contact the Human Resources staff at SM.FS.anilcajobs@usda.gov. MAJOR DUTIES: The position serves as a technical assistant in the performance of a variety of hydrology tasks, either as a crew member or individual worker. IMPORTANT: Click the 'Apply for this job' button to view a complete job description.