# Hydrologists > Research the distribution, circulation, and physical properties of underground and surface waters; and study the form and intensity of precipitation and its rate of infiltration into the soil, movement through the earth, and return to the ocean and atmosphere. - Code: 19-2043.00 (O*NET-SOC; SOC 2018 19-2043) - Family: [Life, Physical & Social Science](https://foundation.org.ai/occupations#family-19), one of its 66 occupations - Tasks: 25 tasks (23 core and 2 supplemental) - Page: https://foundation.org.ai/occupations/19-2043.00 - JSON: https://foundation.org.ai/data/tasks/19-2043.00.json ## What the work is made of 1. Prepare written and oral reports describing research results, using illustrations, maps, appendices, and other information. Core task · Task 18618 · Rated by 23 occupational experts, August 2018 2. Design and conduct scientific hydrogeological investigations to ensure that accurate and appropriate information is available for use in water resource management decisions. Core task · Task 9104 · Rated by 23 occupational experts, August 2018 3. Measure and graph phenomena such as lake levels, stream flows, and changes in water volumes. Core task · Task 9108 · Rated by 23 occupational experts, August 2018 4. Conduct research and communicate information to promote the conservation and preservation of water resources. Core task · Task 9116 · Rated by 23 occupational experts, August 2018 5. Coordinate and supervise the work of professional and technical staff, including research assistants, technologists, and technicians. Core task · Task 9102 · Rated by 23 occupational experts, August 2018 6. Study public water supply issues, including flood and drought risks, water quality, wastewater, and impacts on wetland habitats. Core task · Task 9105 · Rated by 23 occupational experts, August 2018 7. Apply research findings to help minimize the environmental impacts of pollution, waterborne diseases, erosion, and sedimentation. Core task · Task 9107 · Rated by 23 occupational experts, August 2018 8. Study and document quantities, distribution, disposition, and development of underground and surface waters. Core task · Task 9100 · Rated by 23 occupational experts, August 2018 9. Install, maintain, and calibrate instruments such as those that monitor water levels, rainfall, and sediments. Core task · Task 9112 · Rated by 23 occupational experts, August 2018 10. Develop computer models for hydrologic predictions. Core task · Task 18617 · Rated by 22 occupational experts, August 2018 11. Study and analyze the physical aspects of the earth in terms of hydrological components, including atmosphere, hydrosphere, and interior structure. Core task · Task 9115 · Rated by 23 occupational experts, August 2018 12. Evaluate research data in terms of its impact on issues such as soil and water conservation, flood control planning, and water supply forecasting. Core task · Task 9119 · Rated by 23 occupational experts, August 2018 13. Collect and analyze water samples as part of field investigations or to validate data from automatic monitors. Core task · Task 9106 · Rated by 23 occupational experts, August 2018 14. Prepare hydrogeologic evaluations of known or suspected hazardous waste sites and land treatment and feedlot facilities. Core task · Task 9103 · Rated by 23 occupational experts, August 2018 15. Evaluate data and provide recommendations regarding the feasibility of municipal projects, such as hydroelectric power plants, irrigation systems, flood warning systems, and waste treatment facilities. Core task · Task 9113 · Rated by 23 occupational experts, August 2018 16. Develop or modify methods for conducting hydrologic studies. Core task · Task 9111 · Rated by 23 occupational experts, August 2018 17. Review applications for site plans and permits and recommend approval, denial, modification, or further investigative action. Core task · Task 9118 · Rated by 23 occupational experts, August 2018 18. Monitor the work of well contractors, exploratory borers, and engineers and enforce rules regarding their activities. Core task · Task 9120 · Rated by 23 occupational experts, August 2018 19. Answer questions and provide technical assistance and information to contractors or the public regarding issues such as well drilling, code requirements, hydrology, and geology. Core task · Task 9110 · Rated by 22 occupational experts, August 2018 20. Investigate properties, origins, and activities of glaciers, ice, snow, and permafrost. Core task · Task 9123 · Rated by 23 occupational experts, August 2018 21. Conduct short- and long-term climate assessments and study storm occurrences. Core task · Task 9114 · Rated by 23 occupational experts, August 2018 22. Administer programs designed to ensure the proper sealing of abandoned wells. Core task · Task 9121 · Rated by 23 occupational experts, August 2018 23. Investigate complaints or conflicts related to the alteration of public waters, gathering information, recommending alternatives, informing participants of progress, and preparing draft orders. Core task · Task 9109 · Rated by 23 occupational experts, August 2018 24. Design civil works associated with hydrographic activities and supervise their construction, installation, and maintenance. Supplemental task · Task 9117 · Rated by 23 occupational experts, August 2018 25. Compile and evaluate hydrologic information to prepare navigational charts and maps and to predict atmospheric conditions. Supplemental task · Task 9122 · Rated by 22 occupational experts, August 2018 ## More in Life, Physical & Social Science - [Agricultural Technicians](https://foundation.org.ai/occupations/19-4012.00): 26 tasks - [Animal Scientists](https://foundation.org.ai/occupations/19-1011.00): 9 tasks - [Anthropologists and Archeologists](https://foundation.org.ai/occupations/19-3091.00): 30 tasks - [Astronomers](https://foundation.org.ai/occupations/19-2011.00): 17 tasks - [Atmospheric and Space Scientists](https://foundation.org.ai/occupations/19-2021.00): 27 tasks - [Biochemists and Biophysicists](https://foundation.org.ai/occupations/19-1021.00): 24 tasks - [Bioinformatics Scientists](https://foundation.org.ai/occupations/19-1029.01): 20 tasks - [Biological Scientists, All Other](https://foundation.org.ai/occupations/19-1029.00): no tasks listed - [Biological Technicians](https://foundation.org.ai/occupations/19-4021.00): 17 tasks - [Biologists](https://foundation.org.ai/occupations/19-1029.04): 21 tasks - 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Nothing on this page is written by the Org.AI Foundation.