• Organization: Department of the Interior
• Updated: 2023-01-25T00:00:00Z

A three-dimensional groundwater flow model using MODFLOW 6 (version 6.2.2) was developed and calibrated for unconsolidated Coastal Plain aquifers underlying the Joint Base McGuire-Dix-Lakehurst...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

A previously developed steady state three-dimensional groundwater flow (MODFLOW-2005) and advective transport (MODPATH6) model was used to examine subsurface nitrate transport to wells and...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

The U.S. Geological Survey, in cooperation with the Air Force Civil Engineer Center, developed a numerical, steady-state regional model, using MODFLOW-2005, to evaluate current (2010) conditions...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

A steady state three-dimensional groundwater flow (MODFLOW-2005) and advective transport (MODPATH6) model was developed to examine subsurface travel times to wells and receiving streams in two...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-11-17T00:00:00Z

Coal combustion by-products (CCBs, in the form of ash) produced at the coal-fired San Juan Generating Station in San Juan County, New Mexico, have been buried in former surface-mine pits at the...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2025-08-05T00:00:00Z

The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency and the New Hampshire Department of Environmental Services, developed a model for used with MODFLOW-2005...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-11-20T00:00:00Z

Situated in a remote corner of northwestern New Mexico, Chaco Culture National Historical Park (CCNHP) was once the center of a sophisticated social, political and architectural civilization with...

• xml
• xml

• Organization: Department of Agriculture
• Updated: 2024-02-15

The HYDRUS program is a finite element model for simulating the one-dimensional movement of water, heat, and multiple solutes in variably saturated media. The program numerically solves the...

• html

• Organization: Department of Agriculture
• Updated: 2024-02-15

HYDRUS-1D is a Microsoft Windows-based modeling environment for analysis of water flow and solute transport in variably saturated porous media. The software package includes the one-dimensional...

• html

• Organization: Department of the Interior
• Updated: 2023-03-09T00:00:00Z

The U.S. Geological Survey (USGS) in cooperation with the Miami Conservancy District, Dayton, Ohio, in 2019 and 2020 investigated the occurrence of per- and polyfluoroalkyl substances (PFAS) in...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2022-01-04T00:00:00Z

MODFLOW-NWT groundwater flow models and MODPATH6 particle tracking simulations were developed to determine contributing areas (CAs) for and advective travel times to domestic wells under extreme...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2021-03-22T00:00:00Z

Three groundwater flow models, using MODFLOW-2000, SEAWAT, and SHARP model codes, were used to evaluate plans to supply potable and non-potable water to residents and businesses of Cape May...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2023-05-26T00:00:00Z

The U.S. Geological Survey, in cooperation with Aiken County; City of Aiken; Breezy Hill Water and Sewer Company, Inc.; Montmorenci-Couchton Water and Sewer District, Inc.; and Gilbert-Summit...

• xml
• xml