Christian Langevin
Dr. Christian Langevin is a research hydrologist with the USGS Water Resources Mission Area.
Dr. Christian Langevin is a research hydrologist with the U.S. Geological Survey Earth Systems Modeling Branch. He presently sits in the Mounds View Office in Minnesota, which is part of the Upper Midwest Water Science Center. Dr. Langevin is the primary USGS contact for the MODFLOW program, which is used worldwide to simulate groundwater flow. His present research focuses on development and support of the MODFLOW 6 program and other related programs, such as FloPy, SEAWAT, MT3D-USGS, MODFLOW-USG, and MODFLOW-2005. Dr. Langevin began his career with the USGS in 1998 after completing his M.S. and Ph.D. at the University of South Florida in Tampa and his B.S. at the University of Wisconsin at Madison.
Science and Products
MODFLOW and Related Programs
MODFLOW 6 model of two hypothetical stream-aquifer systems to demonstrate the utility of the new Mover Package available only with MODFLOW 6
An agricultural package for MODFLOW 6 using the Application Programming Interface
MODFLOW as a configurable multi-model hydrologic simulator
FloPy workflows for creating structured and unstructured MODFLOW models
Estimation of the water table position in unconfined aquifers with MODFLOW 6
Improved method for simulating groundwater inundation using the MODFLOW 6 Lake Transport Package
Documentation for the MODFLOW 6 Groundwater Transport Model
The MODFLOW Application Programming Interface for simulationcontrol and software interoperability
Use of the MODFLOW 6 water mover package to represent natural and managed hydrologic connections
Rebuttal to “The case of the Biscayne Bay and aquifer near Miami, Florida: density-driven flow of seawater or gravitationally driven discharge of deep saline groundwater?” by Weyer (Environ Earth Sci 2018, 77:1–16)
Documentation for the “XT3D” option in the Node Property Flow (NPF) Package of MODFLOW 6
Documentation for the MODFLOW 6 Groundwater Flow Model
Documentation for the MODFLOW 6 framework
MODFLOW 6: USGS Modular Hydrologic Model
MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey.
FloPy: Python Package for Creating, Running, and Post-Processing MODFLOW-Based Models
FloPy is a Python package for creating, running, and post-processing MODFLOW-based models.
MODFLOW-2005: USGS Three-Dimensional Finite-Difference Ground-Water Model
MODFLOW 6 is presently the core MODFLOW version distributed by the USGS, but MODFLOW-2005 (the previous core version) is still actively maintained and supported. MODFLOW-2005 simulates steady and nonsteady flow in an irregularly shaped flow system in which aquifer layers can be confined, unconfined, or a combination of confined and unconfined.
MODFLOW-USG: An Unstructured Grid Version of MODFLOW for Simulating Groundwater Flow and Tightly Coupled Processes Using a Control Volume Finite-Difference Formulation
MODFLOW-USG is an unstructured grid version of MODFLOW for simulating groundwater flow and tightly-coupled processes using a control volume finite-difference formulation.
GRIDGEN: A Program for Generating Unstructured Finite-Volume Grids
GRIDGEN is a program for generating layered quadtree grids for MODFLOW-USG.
SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground-Water Flow and Transport
SEAWAT is a combined version of MODFLOW and MT3DMS for simulation of variable-density groundwater flow and transport.
Science and Products
MODFLOW and Related Programs
MODFLOW 6 model of two hypothetical stream-aquifer systems to demonstrate the utility of the new Mover Package available only with MODFLOW 6
An agricultural package for MODFLOW 6 using the Application Programming Interface
MODFLOW as a configurable multi-model hydrologic simulator
FloPy workflows for creating structured and unstructured MODFLOW models
Estimation of the water table position in unconfined aquifers with MODFLOW 6
Improved method for simulating groundwater inundation using the MODFLOW 6 Lake Transport Package
Documentation for the MODFLOW 6 Groundwater Transport Model
The MODFLOW Application Programming Interface for simulationcontrol and software interoperability
Use of the MODFLOW 6 water mover package to represent natural and managed hydrologic connections
Rebuttal to “The case of the Biscayne Bay and aquifer near Miami, Florida: density-driven flow of seawater or gravitationally driven discharge of deep saline groundwater?” by Weyer (Environ Earth Sci 2018, 77:1–16)
Documentation for the “XT3D” option in the Node Property Flow (NPF) Package of MODFLOW 6
Documentation for the MODFLOW 6 Groundwater Flow Model
Documentation for the MODFLOW 6 framework
MODFLOW 6: USGS Modular Hydrologic Model
MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey.
FloPy: Python Package for Creating, Running, and Post-Processing MODFLOW-Based Models
FloPy is a Python package for creating, running, and post-processing MODFLOW-based models.
MODFLOW-2005: USGS Three-Dimensional Finite-Difference Ground-Water Model
MODFLOW 6 is presently the core MODFLOW version distributed by the USGS, but MODFLOW-2005 (the previous core version) is still actively maintained and supported. MODFLOW-2005 simulates steady and nonsteady flow in an irregularly shaped flow system in which aquifer layers can be confined, unconfined, or a combination of confined and unconfined.
MODFLOW-USG: An Unstructured Grid Version of MODFLOW for Simulating Groundwater Flow and Tightly Coupled Processes Using a Control Volume Finite-Difference Formulation
MODFLOW-USG is an unstructured grid version of MODFLOW for simulating groundwater flow and tightly-coupled processes using a control volume finite-difference formulation.
GRIDGEN: A Program for Generating Unstructured Finite-Volume Grids
GRIDGEN is a program for generating layered quadtree grids for MODFLOW-USG.
SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground-Water Flow and Transport
SEAWAT is a combined version of MODFLOW and MT3DMS for simulation of variable-density groundwater flow and transport.