Groundwater Modeler: MODFLOW & EarthVision Expert(Las Vegas)

Navarro Research and Engineering; Las Vegas (NV); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health Care Plan (Medical, Dental &amp

Retirement Plan (401k)

Life Insurance (Basic, Voluntary &

Paid Time Off (Vacation & PublicH

Short Term & Long Term Disability

Job summary

Navarro Research and Engineering seeks a Groundwater Modeler in Las Vegas, NV to develop and calibrate MODFLOW-based models for NNSS. You will integrate geological data with hydrogeologic modeling, communicate assumptions clearly, and support environmental decision-making in a federal contract environment.

Responsibilities include data compilation, model input creation, results interpretation, and creating technical deliverables for client communications; strong QA and collaboration with

Qualifications

• Bachelor's degree in hydrogeology, geology, hydrology, geoscience, environmental science, civil or environmental engineering or related discipline.
• Demonstrated experience developing or supporting groundwater models using MODFLOW.
• Demonstrated experience with model optimization tools (such as PEST) and Monte Carlo uncertainty approaches.
• Demonstrated experience using EarthVision for geologic or hydrogeologic model development, visualization, and interpretation.
• Working knowledge of groundwater flow principles, stratigraphy, and site models.
• Ability to evaluate and integrate large technical datasets and communicate results clearly.
• Ability to work from Navarro's Las Vegas, NV office and support NNSS activities.

Responsibilities

• Develop, maintain, calibrate, and document groundwater flow and contaminant transport models for NNSS using the MODFLOW suite of tools.
• Use EarthVision to develop, visualize, and interpret geologic and hydrogeologic data, including stratigraphic surfaces and model layers.
• Compile, review, and evaluate groundwater, geologic, hydrologic, hydraulic, contaminant data to support model development and calibration.
• Prepare model input files, boundary conditions, hydraulic parameters, stress packages, and model outputs.
• Evaluate model results, perform sensitivity checks, assess uncertainty, and support interpretation of groundwater flow conditions.
• Generate maps, figures, cross sections, tables, model visualizations, and technical summaries for deliverables.
• Coordinate with hydrogeologists, geologists, engineers, and client representatives to align modeling with objectives and quality requirements.
• Apply QA, configuration control, data management, and technical review practices for modeling files and deliverables.
• Support technical reports, presentations, and project meetings related to NNSS groundwater modeling.

Skills

MODFLOW

EarthVision

Monte Carlo

PEST

Education

Bachelor-level degree in hydrogeology/geoscience/related field

Advanced degree in hydrogeology/geoscience/related field

Tools

ModelMuse

Groundwater Vistas

MODPATH

MT3DMS

RT3D

Python

R

Job description

Navarro Research and Engineering seeks a Groundwater Modeler in Las Vegas, NV to develop and calibrate MODFLOW-based models for NNSS. You will integrate geological data with hydrogeologic modeling, communicate assumptions clearly, and support environmental decision-making in a federal contract environment.

Responsibilities include data compilation, model input creation, results interpretation, and creating technical deliverables for client communications; strong QA and collaboration with