April 2018


General public, partner agencies, municipalities, groundwater resource managers

Base Data

USGS Water Data for the Nation


USGS News Release

Launch GWWebFlow

GWWebFlow allows users to quickly and easily view computer model inputs, such as information about aquifer properties, as well as the outputs, such as groundwater levels and flow direction. Easy access to this information will help resource managers make informed decisions about resources.

GWWebFlow supports most MODFLOW-based groundwater models; new models will be added in the future with little modification or customization. Currently, there are three USGS groundwater models available for viewing from the USGS Texas Water Science Center, including a Houston-area groundwater model, a San Antonio region Edwards aquifer brackish water model, and a Pecos County region Edwards-Trinity and related aquifers model. The USGS plans to add other existing groundwater models from around the country to this web application.

Side-by-side model input results

Model input results with a data about a particular point

Model information