Groundwater Modeler

Larry Walker Associates is seeking a Groundwater Modeler to support numerical modeling and technical analysis on groundwater projects throughout California. This role is suited to candidates with more than 4 years of professional experience who are passionate about groundwater modeling and want to apply their expertise across a range of complex projects. The successful candidate will work with teams to develop and apply groundwater models in support of SGMA compliance, basin characterization, water resources planning, and regulatory reporting.

Key Responsibilities

• Develop, calibrate, and apply numerical groundwater flow and transport models using MODFLOW (e.g., MODFLOW-6, MODFLOW-OWHM, MODFLOW-USG) and/or DWR integrated hydrologic models (IWFM, C2VSim)
• Perform model parameter estimation and uncertainty analysis
• Develop and evaluate model input datasets including hydrostratigraphy, recharge, pumping, and water ...