JOB SUMMARY: These positions are located in Grand Canyon National Park, in the Science and Resource Managment Division. This is a term position (more than 1 year) with an initial appointment to last at least 13 months but may be extended up to a total of 10 years. Term positions do not convey permanent status in the Federal service. MAJOR DUTIES: These TERM positions will be funded through project funds and grants for the life of major infrastructure projects in Grand Canyon National Park, including the Trans Canyon Waterline Project, the North Rim infrastructure Project, the South Rim Wastewater Treatment Plant project, and others. The Hydrologist performs scientific work (hydrology, geomorphology, caves, and other studies) related to major Park infrastructure projects, including the Trans-Canyon Water Line (TCWL), the South Rim Wastewater Treatment Plant, the North Rim infrastructure project, and other priority Park hydrology projects, including Climate Change impacts on hydrological resources. This includes gathering, processing, and interpreting surface and groundwater hydrologic data, inventory and monitoring studies, data management, data analysis, and a dynamic collaborative program of hydrologic research with numerous internal and external partners. The incumbent works under the direction of a higher-graded Hydrologist or the Geosciences Program Manager. The Hydrologist exercises independent judgement to plan, coordinate and lead moderately difficult hydrological investigations, inventory and monitoring projects, and scientific research. S(he) plans, executes, and may lead field work in remote canyon environments to generate new or verify existing mapped hydrological information, and to monitor ongoing activities. The Hydrologist plans and performs data collection, management, and analysis using current technologies, including ArcGIS Online, ArcGIS Pro, Field Maps, Aquarius, R, and other software, performs data entry, carries out quality control checks on data collected and entered by others, conducts analysis of data sets, prepares maps and scientific reports, and determines, documents, and communicates the findings to management, other science professionals, and the public. S(he) ensures a safe work environment and policies for self and subordinate staff and may act as work leader for lower-graded personnel, interns, or volunteers. The incumbent assists with project planning, work and funding proposals, budget tracking, and other administrative tasks. The Hydrologist communicates effectively, orally and in writing, with other Park staff and offices, other agencies, institutions, academia, researchers, and others regarding collaboration, compliance, and ongoing work, and may participate in conferences or other technical meetings. Major Duties: Plans, performs, coordinates, and directs comprehensive hydrologic field studies. Collects, manages, analyzes, and interprets hydrologic data. Develops, modifies, and utilizes spatial and relational databases and related applications to maintain hydrologic data for planning and analysis. Plans and performs a wide range of data collection assignments. Writes and publishes reports of findings in internal or external reports, recommendations to resource managers, or scientific journal publications. This is a term position (more than 1 year) with an initial appointment expecting to last at least 13 months but may be extended up to a total of ten (10) years. Term positions do not convey permanent status in the Federal service. The National Park Service retains the right to extend the duration of this appointment after selection and/or appointment, based on changes to the regulation governing the number of years term appointments may last. This change, which may be made at the agency's sole discretion and without further competition, shall not be construed or interpreted as the granting of a right to a selectee or employee to such an extension. No extension to a term appointment shall be granted to a selectee/employee to an amount of time that exceeds the maximum number of years authorized under any present or current regulation, unless such regulation expressly allows such action. Flagstaff Area Information: This position is stationed at the Grand Canyon National Park offices in Flagstaff, Arizona. Flagstaff is located about 70 miles from the park and has a population of about 75,000. Flagstaff has an elevation of 7,000 ft. and includes multiple K-12 public and private schools, Northern Arizona University, a diverse community, medical and other support services. The rental and home markets in Flagstaff can be relatively expensive and limited. Summers in Flagstaff are warm with temperatures in the 80's and frequent monsoon thunderstorms. Winters are cold, with low temperatures near zero and snow averaging around 90 inches. Recreational opportunities in both areas cross all four seasons in environments ranging from low deserts to high mountains and include hiking, backpacking, fishing, cross-country and downhill skiing, and golfing in nearby communities. Government housing is not available. IMPORTANT: Click the 'Apply for this job' button to view a complete job description.