Software

SEAWAT is a combined version of MODFLOW and MT3DMS for simulation of variable-density groundwater flow and transport.

The Surface-Water Routing (SWR) Process is used to accurately simulate stages, surface-water flows, and surface-water/groundwater interactions in areas where surface-water gradients are small and/or there is significant management of surface water. 

Estimation of Baseline Daily Mean Streamflows for Ungaged Locations on Pennsylvania Streams, Water Years 1960–2008

The Central Valley Hydrologic Model (CVHM) is an extensive, detailed three-dimensional (3D) computer model of the hydrologic system of the Central Valley (Faunt, 2009). The Central Valley Hydrologic Model (CVHM) simultaneously accounts for changing water supply and demand across the landscape, and simulates surface water and groundwater flow across the entire Central Valley.

The purpose of the Physical Habitat Simulation System (PHABSIM) is to simulate a relationship between streamflow and physical habitat for various life stages of a species of fish or a recreational activity. 

Smart River GIS allows simultaneous views of river hydraulics, species-specific habitat, and fish population simulations, for a better understanding of complex ecological interactions. We used existing data sets from the South Platte River in Colorado to develop a multi-layered geographic information system (GIS) that resource managers can use to improve their understanding of river ecosystems.

The Software for Assisted Habitat Modeling for VisTrails has been created to both expedite habitat suitability modeling and help maintain a record of the various input data, pre- and post- processing steps, and modeling options incorporated in the construction of a species distribution model. 

Computes survival-movement, capture and recovery probabilities from multi-strata capture-recapture-recovery data.

USGS Processing Routines in IDL for Spectroscopic Meausres (PRISM) software provides a framework to conduct spectroscopy analysis of measurements made by spectrometers. PRISM functions allows users to compare spectra of materials of unknown composition with reference spectra of known materials.

FLASH (Flow-Log Analysis of Single Holes) is a computer program for the analysis of borehole vertical flow logs.

Conduit Flow Process (CFP) allows simulation of laminar and turbulent flow within a standard MODFLOW layer and/or simulation of a hybrid model (one-dimensional pipe network coupled to MODFLOW).
 

@USGSted (USGS Twitter Earthquake Dispatch) distributes Twitter alerts for earthquakes worldwide with magnitudes of 5.5 and above. When citizens feel shaking activity, they often use the popular social media application, Twitter, to "tweet" what they are experiencing.