What it pays
Government survey numbers — not estimates, not ads.
Half of all Hydrologists in the U.S. earn more than $96,600 a year — the middle 80% land between $64,020 and $153,130. About 5,850 people in the U.S. do this work. Figures are for the U.S. occupation group “Hydrologists”. (U.S. Bureau of Labor Statistics survey, published 2025.) In India, Professionals earn about ₹38,298 a month on average — around ₹4.6 lakh a year (government PLFS survey via ILOSTAT, occupation-family figure).
$96,600typical pay / year
5,850people in this work
$153,130+top 10% earn
₹4.6 lakha year in India (family avg)
Think you get this job?Six quick questions on how it really works — with a hint and the reason behind every answer.
Test yourself →The work, task by task
These are the real jobs-to-be-done, not a wish list. Each task shows where we found it, and the prompt underneath is written for that exact task.
Learning2
Develop methods for water forecasting
+Design and test a set of transferable methods to forecast groundwater recharge and baseflow for the Central…
Develop methods for water forecasting
+Design and test a set of transferable methods to forecast groundwater recharge and baseflow for the Central Valley aquifer using available well logs, precipitation records, and land use maps—document assumptions, uncertainty ranges, and required input data.
The tools that do the workESRI ArcGISMicrosoft Exceljob descriptionsWikipedia
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Forecast water supply levels
+Produce a four-quarter reservoir and shallow aquifer water-supply forecast for Santa Clara County using…
Forecast water supply levels
+Produce a four-quarter reservoir and shallow aquifer water-supply forecast for Santa Clara County using historic streamflow, groundwater levels, and recent pumping records—include scenario runs for wet, normal and dry years and a one‑page summary for the water manager.
The tools that do the workMicrosoft ExcelESRI ArcGISjob descriptionsWikipedia
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Analysing1
Use computer modeling for water systems
+Set up and calibrate a distributed computer model of the basin hydrology to simulate groundwater–surface…
Use computer modeling for water systems
+Set up and calibrate a distributed computer model of the basin hydrology to simulate groundwater–surface water interactions for the three target subbasins, run calibration against 2015–2025 head and discharge observations, and save the calibrated parameter set and diagnostics.
The tools that do the workC++ESRI ArcGISjob descriptionsWikipedia
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The daily work17
Monitor the work of well contractors, exploratory borers, and engineers and enforce rules regarding their activities.
+Monitor the well contractors, exploratory borers, and consulting engineers on site this week, verify their…
Monitor the work of well contractors, exploratory borers, and engineers and enforce rules regarding their activities.
+Monitor the well contractors, exploratory borers, and consulting engineers on site this week, verify their drilling logs, borehole casing and grout records match permits, stop work and issue a written nonconformance if dewatering or well installation deviates from the approved plan.
The tools that do the workESRI ArcGISO*NET
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Investigate properties, origins, and activities of glaciers, ice, snow, and permafrost.
+Inspect the glacier, ice and permafrost field transects tomorrow, document ice stratigraphy, sample depth,…
Investigate properties, origins, and activities of glaciers, ice, snow, and permafrost.
+Inspect the glacier, ice and permafrost field transects tomorrow, document ice stratigraphy, sample depth, and thaw features, photograph GPS-referenced locations, and write a short report on origin and activity for the regional permafrost file.
The tools that do the workESRI ArcGISO*NET
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Conduct short- and long-term climate assessments and study storm occurrences.
+Assemble recent rainfall, temperature and streamflow records for the last ten years, run a seasonal analysis…
Conduct short- and long-term climate assessments and study storm occurrences.
+Assemble recent rainfall, temperature and streamflow records for the last ten years, run a seasonal analysis to detect trends and extreme storm frequency, and draft a two-page summary of climate implications for groundwater recharge.
The tools that do the workMicrosoft ExcelESRI ArcGISO*NET
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Supervise data collection activities
+Oversee tomorrow's field crews collecting water levels and conductivity profiles, confirm sampling protocols,…
Supervise data collection activities
+Oversee tomorrow's field crews collecting water levels and conductivity profiles, confirm sampling protocols, check instrument calibration sheets, and collate daily logs so data are ready for QA within 24 hours of collection.
The tools that do the workMicrosoft Exceljob descriptions
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Estimate underground water volume
+Estimate the aquifer storage beneath the study area by compiling borehole lithology, hydraulic conductivity…
Estimate underground water volume
+Estimate the aquifer storage beneath the study area by compiling borehole lithology, hydraulic conductivity tests and water levels, run a storage calculation using the layered aquifer approach, and produce a one-page memo with assumptions and uncertainty bounds.
The tools that do the workESRI ArcGISMicrosoft Exceljob descriptions
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Collect samples for contamination analysis
+Collect groundwater and sediment samples at the flagged monitoring wells this morning following the…
Collect samples for contamination analysis
+Collect groundwater and sediment samples at the flagged monitoring wells this morning following the chain-of-custody and decontamination protocol, label and cool samples, send same-day shipment to the lab, and record custody in the field log.
The tools that do the workMicrosoft Wordjob descriptions
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Record and analyze water resource data
+Collect the recent field logger CSVs, well-stage measurements, and lab nitrate results, clean and join them…
Record and analyze water resource data
+Collect the recent field logger CSVs, well-stage measurements, and lab nitrate results, clean and join them to the monitoring well locations, run the quality checks and hydrographs, then produce a one-page summary of trends and anomalies for Monday's site meeting.
The tools that do the workMicrosoft ExcelESRI ArcGISESCOjob descriptionsO*NETWikipedia
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Study the water cycle and water resources
+Assemble precipitation, evapotranspiration, surface flow and recharge estimates for the catchment, run the…
Study the water cycle and water resources
+Assemble precipitation, evapotranspiration, surface flow and recharge estimates for the catchment, run the mass-balance and a simple steady-state groundwater model, then write a two-page memo interpreting how recent land-use change altered the water budget for the planning team.
The tools that do the workESRI ArcGISMicrosoft ExcelESCOjob descriptionsWikipedia
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Oversee drilling of test wells
+Schedule the drill rig, field crew and equipment; produce the borehole log template, list required permits…
Oversee drilling of test wells
+Schedule the drill rig, field crew and equipment; produce the borehole log template, list required permits and health-safety checks, confirm the stratigraphic sampling intervals, and send the drill program and logistic checklist to the contractor and project manager by Thursday.
The tools that do the workMicrosoft WordESRI ArcGISjob descriptionsO*NET
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Manage drainage basin sustainability
+Update the drainage basin monitoring network map, run a quick model to test low-flow and runoff scenarios…
Manage drainage basin sustainability
+Update the drainage basin monitoring network map, run a quick model to test low-flow and runoff scenarios under current abstraction rates, then draft recommended abstraction caps and restoration actions to keep baseflow above ecological thresholds for the regional water board.
The tools that do the workESRI ArcGISMicrosoft Exceljob descriptionsWikipedia
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Prepare written and oral reports describing research results, using illustrations, maps, appendices, and other information.
+Draft the technical report combining maps, hydrographs and appendix tables, prepare the talk with three key…
Prepare written and oral reports describing research results, using illustrations, maps, appendices, and other information.
+Draft the technical report combining maps, hydrographs and appendix tables, prepare the talk with three key figures for the community meeting, and circulate the full draft with figures and raw data appendix to the reviewers for comment by Friday.
The tools that do the workMicrosoft WordMicrosoft PowerPointO*NET
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Coordinate and supervise the work of professional and technical staff, including research assistants, technologists, and technicians.
+Assign tasks and deadlines for the field sampling, lab QA, GIS updates and model runs, set weekly check-ins,…
Coordinate and supervise the work of professional and technical staff, including research assistants, technologists, and technicians.
+Assign tasks and deadlines for the field sampling, lab QA, GIS updates and model runs, set weekly check-ins, collect progress notes from each technician, and prepare a concise status update for the principal investigator ahead of next Tuesday's review.
The tools that do the workMicrosoft OfficeMicrosoft ExcelO*NET
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Support environmental engineering projects
+Prepare a groundwater impact memo for the South Valley remediation design, map modelled contaminant plumes…
Support environmental engineering projects
+Prepare a groundwater impact memo for the South Valley remediation design, map modelled contaminant plumes with monitoring well locations, flag data gaps that affect predictions, attach model output tables, and send to lead engineer Rachel by Wednesday for design input.
The tools that do the workESRI ArcGISMicrosoft WordWikipedia
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Keep mine workings free of nuisance water
+Update dewatering plan for North Pit to keep workings dry through the rainy season: combine latest…
Keep mine workings free of nuisance water
+Update dewatering plan for North Pit to keep workings dry through the rainy season: combine latest water-level trends, recalc pumping rates to maintain 2 metres drawdown at production faces, produce a one-page pumping schedule and send to mine manager Tom by Friday morning.
The tools that do the workMicrosoft ExcelESRI ArcGISESCO
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Identify GIS issues
+Run a QA check on the central site GIS dataset: confirm projection and vertical datum on all layers, identify…
Identify GIS issues
+Run a QA check on the central site GIS dataset: confirm projection and vertical datum on all layers, identify duplicate well IDs and missing attribute fields for sample date or depth, export an errors list and email it to GIS tech Maria by Tuesday.
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Create GIS reports
+Assemble the quarterly GIS report for regulatory submission: create maps of plume extent, monitoring trends…
Create GIS reports
+Assemble the quarterly GIS report for regulatory submission: create maps of plume extent, monitoring trends charts, a table of exceedances with sample dates, write a brief methods note, and deliver the PDF to compliance lead James by next Monday.
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Geographic information systems
+Build a site-wide GIS layer package for the remediation team: standardise coordinate systems, join well logs…
Geographic information systems
+Build a site-wide GIS layer package for the remediation team: standardise coordinate systems, join well logs to spatial points, create hydrostratigraphy polygons from borehole data, and share the packaged dataset with field supervisor Elena today.
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