Hydrologist

Forest Service · Multiple Locations, US

Posted August 4, 2026

Business & ManagementGeneral

USD 61,722 – 97,087

About this role

In order to qualify, you must meet the eligibility and qualifications requirements as defined below by the closing date of the announcement. For more information on the qualifications for this position, visit the Office of Personnel Management's General Schedule Qualification Standards. Your application and resume must clearly show that you possess the experience requirements. Transcripts must be provided for qualifications based on education. Provide course descriptions as necessary. Basic Requirement: GS-1315 Degree: Successful completion of a full 4-year course of study in an accredited college or university leading to a bachelor's or higher degree that included a major field of study in physical or natural science, or engineering that included at least 30 semester hours in any combination of courses in hydrology, the physical sciences, geophysics, chemistry, engineering science, soils, mathematics, aquatic biology, atmospheric science, meteorology, geology, oceanography, or the management or conservation of water resources. The course work must have included at least 6 semester hours in calculus (including both differential and integral calculus), and at least 6 semester hours in physics. Calculus and physics, as described above, are requirements for all grade levels. OR Combination of education and experience -- coursework as shown above, plus appropriate experience or additional education. Acceptable experience must have included performance of scientific functions related to the study of water resources, based on and requiring a professional knowledge of related sciences and the consistent application of basic scientific principles to the solution of theoretical and practical hydrologic problems. The following is illustrative of acceptable experience: field or laboratory work that would require application of hydrologic theory and related sciences such as geology, geo-chemistry, geophysics, or civil engineering to making observations, taking samples, operating instruments, assembling data from source materials, analyzing and interpreting data, and reporting findings orally and in writing. In some cases, professional scientific experience that is not clearly water resource experience may be acceptable if such experience was preceded by appropriate education in hydrology or by professional hydrology experience. In addition to meeting the basic requirement, you must also possess experience and/or directly related education in the amounts listed below. Specialized Experience Requirement: For the GS-09 level: Applicants must have one year of specialized experience equivalent to at least the GS-07 grade level. SQualifying specialized experience is defined as one or more of the following: Conducted water resource inventories and prepared the data for application into the land management planning process; and/or Implemented water resource improvement project plans and evaluated the impacts on the water resource; Assisted in the preparation of management prescriptions for protecting and/or enhancing the water resource. OR A Master's or equivalent graduate degree or 2 full years of progressively higher level graduate education leading to such a degree such as Hydrology or LL.B. or J.D., if related. OR An appropriate combination of specialized experience and education (only graduate education in excess of 18 semester hours may be used to qualify applicants for this grade level). The education must have been obtained in an accredited college or university and demonstrate the knowledge, skills, and abilities necessary to do the work. For the GS-11 level: Applicants must have one year of specialized experience equivalent to at least the GS-09 grade level. Qualifying specialized experience is defined as one or more of the following: Collected, analyzed, and interpreted watershed data for input to environmental reports; Participated as a member of interdisciplinary teams working on land management planning; and/or Prepared and carried out water quality monitoring programs, including preparation of plans, collection and analysis of samples, and interpretation of data. OR Successfully completed three years of progressively higher-level graduate education leading to a Ph.D. degree or Ph.D. or equivalent doctoral degree (coursework directly related to position being filled such as hydrology, geophysics, chemistry, engineering science, soils). OR An appropriate combination of specialized experience and graduate level education (beyond what is required for a master's degree, i.e., more than 36 semester hours leading to a Ph.D.) (coursework directly related to position being filled such as hydrology, geophysics, chemistry, engineering science, soils). Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.

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