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Modflow Jobs in California (NOW HIRING)

ECS Ltd

Remediation Engineer

Walnut Creek, CA · On-site

Experience with hydraulic and contaminant transport modeling tools (e.g., MODFLOW, MT3D, GIS or similar). * Ability to oversee and support field operations, including startup, sampling, and ...

ECS Ltd

Remediation Engineer

Roseville, CA · On-site

Experience with hydraulic and contaminant transport modeling tools (e.g., MODFLOW, MT3D, GIS or similar). * Ability to oversee and support field operations, including startup, sampling, and ...

ECS Ltd

Remediation Engineer

Roseville, CA · On-site

Experience with hydraulic and contaminant transport modeling tools (e.g., MODFLOW, MT3D, GIS or similar). * Ability to oversee and support field operations, including startup, sampling, and ...

Stantec

Water Resources Planning Engineer

Sacramento, CA · On-site

$112K - $168K/yr

Familiarity with and experience using or interpreting outputs of analytical tools (CalSim/WRIMS, WEAP, DSM2, HEC-ResSim, MODFLOW, IWFM, IMPLAN, etc.), scripting/programming languages (e.g. Python, R ...

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How much do modflow jobs pay per year?

As of Jun 6, 2026, the average yearly pay for modflow in California is $91,802.00, according to ZipRecruiter salary data. Most workers in this role earn between $81,900.00 and $101,700.00 per year, depending on experience, location, and employer.

What types of projects and daily responsibilities can I expect as a Modflow groundwater modeler?

As a Modflow groundwater modeler, you will work on projects involving groundwater flow analysis, contamination assessments, water supply planning, and remediation design. Your daily tasks typically include developing and calibrating groundwater models, analyzing hydrologic data, preparing technical reports, and presenting findings to internal teams or clients. Collaboration with engineers, hydrologists, and regulatory agencies is frequent, ensuring that your work integrates with broader environmental and engineering efforts. This role offers opportunities to develop specialized expertise, contribute to impactful water resource solutions, and advance into senior modeling or project management roles.

What are the key skills and qualifications needed to thrive in the Modflow position, and why are they important?

To thrive as a Modflow groundwater modeler, you need a solid background in hydrogeology, groundwater modeling, and environmental engineering, often supported by a degree in geology, environmental science, or a related field. Proficiency with the MODFLOW software, GIS tools, and related modeling programs is essential, and certifications like Professional Geologist (PG) or Engineer-in-Training (EIT) can be advantageous. Strong analytical skills, problem-solving abilities, and effective communication are critical soft skills for collaborating with multidisciplinary teams and stakeholders. These competencies ensure accurate groundwater simulations, effective project delivery, and the ability to inform water resource management decisions.

What is a Modflow job?

A Modflow job typically involves working with MODFLOW, a widely used groundwater flow modeling software developed by the USGS. Professionals in this role use MODFLOW to simulate and analyze subsurface water flow, often for environmental assessments, water resource management, or engineering projects. Common tasks include setting up models, calibrating parameters, interpreting results, and producing reports. These jobs are often found in hydrogeology, environmental consulting, or government agencies dealing with water resources. Strong skills in hydrogeology, numerical modeling, and GIS software are usually required.

What are popular job titles related to Modflow jobs in California? For Modflow jobs in California, the most frequently searched job titles are:
What job categories do people searching Modflow jobs in California look for? The top searched job categories for Modflow jobs in California are:
Modflow jobs near you
Infographic showing various Modflow job openings in California as of May 2026, with employment types broken down into 1% Internship, and 99% Full Time. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution, with an average salary of $91,802 per year, or $44.1 per hour.

Early-Career- to Mid-Level Engineer

GSI Environmental Inc.

Emeryville, CA • Hybrid

Full-time

Posted 18 days ago

Job description

GSI Environmental has an immediate opening for an Entry- to Mid-Level Engineer in our Emeryville, CA office to support our water resources, environmental and geotechnical practices. GSI is an employee-owned company with superior compensation, benefits, professional development, and ownership opportunities. GSI is highly respected nationally and internationally for the quality of its professional services and the technically advanced projects it has completed over its 39 years of operation.

GSI excels at seamless collaboration by offering expert services of cross-disciplinary teams of engineers, geologists, and scientists. GSI currently operates offices in Austin and Houston, TX, Irvine and Emeryville, CA, Olympia, WA, Lakewood, CO, Helena and Missoula, MO and Syracuse, NY with a staff of professionals who perform projects nationwide and internationally. Key opportunities include:

  • Joining a growing employee-owned environmental consulting firm with a foundation of technical excellence and strong industry reputation,
  • Contributing to advancing state-of-the-art science; and,
  • Working with world class experts.

Responsibilities:

The successful candidate will support projects in the fields of hydrogeology, water resources, surface hydraulics and hydrology, and geotechnical engineering. The candidate will perform technical analyses with guidance by a supervisor. Other tasks include data collection, compilation, visualization, and analysis, computer modeling, field activities, oral or written presentation to supervisor, project team, and clients. In addition, candidates will participate in proposal development, project management and business development activities.

Qualifications:

  • Advanced degree with background in groundwater/hydrogeology, environmental engineering, surface water hydraulics, coastal engineering, hydrology and/or geotechnical fields
  • Excellent data analysis skills, such as knowledge of artificial intelligence and machine learning methods
  • Excellent computer modeling skills. Knowledge of models such as TOUGH, MODFLOW, MIKE21 is preferred
  • Proficiency in programming in at least one coding language, such as MATLAB, R, and/or Python
  • Knowledge of statistical and probabilistic analysis
  • Excellent verbal and written communication skills
  • Critical thinking, time management, and problem-solving skills
  • Collaborative mindset
  • Valid drivers license and ability to pass a standard background check and pre-employment drug screen

Job Perks:

  • Competitive salary and benefits with attractive year-end bonuses.
  • Flexible work environment with potential for hybrid (remote and local) work.
  • Participation in conferences, technical presentations, and publications.
  • Supportive and inclusive workplace culture with social activities.

The salary for this position will fall within the posted range, with the exact amount determined by the candidate’s education, relevant degree, related experience, and overall qualifications.

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