Software
An official USGS software project is code reviewed and approved at the bureau-level for distribution.
Filter Total Items: 904
ComCat Wrapper Libraries ComCat Wrapper Libraries
Bulk access via scripts, programs, and tools for obtaining specific products from ComCat (the earthquake catalog).
Direct Green's Function Synthetic Seismograms Direct Green's Function Synthetic Seismograms
These programs are an implementation of the Direct Green’s Function method described by Friederich and Dalkolmo (1995) and Dalkolmo (1993).
Est_noise Est_noise
est_noise is a time-series analysis program that allows the user to fit various, standard functions to their data (rates, offsets, rate-changes, sinusoidals, exponentials, and/or user-defined functions) and simultaneously quantifies the amount of temporal correlation in the time-series data.
FPFIT, FPPLOT and FPPAGE FPFIT, FPPLOT and FPPAGE
FPFIT is a Fortran program that computes double-couple fault plane solutions from P-wave first motion data using a grid search method.
Cleanstrain+ Cleanstrain+
Cleanstrain+ is a program to process strainmeter data.
CLUSTER2000 CLUSTER2000
CLUSTER2000 recognizes clusters in space-time in an earthquake catalog.
3D Focal Mechanisms 3D Focal Mechanisms
3D Focal Mechanisms is a tool for viewing earthquake focal mechanism symbols three dimensionally.
3D Velocity Modeling 3D Velocity Modeling
Fortran code (VMS compatible) for 3-D velocity model determination and hypocentral location with local earthquake data.
MODFLOW-2005: USGS Three-Dimensional Finite-Difference Ground-Water Model 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.
SPARROW Modeling Program SPARROW Modeling Program
SPARROW is a popular watershed modeling technique, distributed by the USGS, that estimates the amount of a contaminant transported from inland watersheds to larger water bodies by linking monitoring data with information on watershed characteristics and contaminant sources.
iRIC river flow and riverbed variation analysis iRIC river flow and riverbed variation analysis
iRIC (International River Interface Cooperative) is a river flow and riverbed variation analysis software package which combines the functionality of MD_SWMS (Multi-Dimensional Surface-Water Modeling System), developed by the USGS, and RIC-Nays, developed by the Foundation of Hokkaido River Disaster Prevention Research Center.
SWToolbox Software Information SWToolbox Software Information
USGS and the U.S. Environmental Protection Agency (EPA) have combined their SWSTAT and DFLOW software programs into a new tool for the low-flow anlaysis, the SWToolbox. As of May 2022, the SWToolbox has been superseded by the Hydrologic Toolbox.