156 Works

ViTexOCR -- a script to extract text overlays from digital video

Evan T. Dailey
The ViTexOCR script presents a new method for extracting navigation data from videos with text overlays using optical character recognition (OCR) software. Over the past few decades, it was common for videos recorded during surveys to be overlaid with real-time geographic positioning satellite chyrons including latitude, longitude, date and time, as well as other ancillary data (such as speed, heading, or user input identifying fields). Embedding these data into videos provides them with utility and...

Thresh - Software for Tracking Rainfall Thresholds for Landslide and Debris Flow Occurrence, Code Repository

Rex L Baum, Jacob C. Vigil & Sarah J. Fischer
The precipitation tracking program, thresh, is a Fortran program designed for computing various measures of precipitation for comparison against established or trial thresholds for landslide occurrence. The program computes cumulative precipitation and precipitation intensity and duration and compares them to thresholds to identify periods of threshold exceedance for use in landslide early warning. This command-line program is used in conjunction with Python scripts and shell scripts to prepare input files and visualize results.

FloPy: Python package for creating, running, and post-processing MODFLOW-based models

Mark Bakker, Vincent Post, Christian D. Langevin, Joseph D. Hughes, Jeremy White, Jeffrey Starn & Michael N Fienen
FloPy is a Python package for creating, running, and post-processing MODFLOW-based models. FloPy includes support for MODFLOW-2000, MODFLOW-2005, MODFLOW-NWT, MODFLOW-USG, and MODFLOW-LGR. Other supported MODFLOW-based models include MODPATH (version 6), MT3D, MT3D-USGS, and SEAWAT.

FLASH: A Computer Program for Flow-Log Analysis of Single Holes

Frederick D. Day-Lewis, Carole D Johnson, Frederick L. Paillet & Keith J Halford
FLASH (Flow-Log Analysis of Single Holes) is a computer program for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady-state multi-layer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multi-layer aquifers. Given vertical flow profiles collected under both ambient and stressed (pumping or injection) conditions, the user can estimate fracture (or layer) transmissivities and far-field hydraulic heads. FLASH is coded...

MODFLOW-NWT data sets for simulation of Effects of Surface-Water and Groundwater Inflows and Outflows on the Hydrology of the Tsala Apopka Lake Basin in Citrus County, Florida

Nicasio Sepulveda &
The U.S. Geological Survey, in cooperation with the Southwest Florida Water Management District, initiated a study to quantify the inflows and outflows in the Floral City, Inverness, and Hernando pools of the Tsala Apopka Lake basin in Citrus County, Florida. This study assesses hydrologic changes in pool stages, groundwater levels, spring flows, and streamflows caused by the diversion of streamflow from the Withlacoochee River to the Tsala Apopka Lake basin through water-control structures. A surface-water/groundwater...

Software to Process and Preserve Legacy Magnetotelluric Data

Michaela R Johnson, Brian D Rodriguez, Anthony L Everette, Tara M. Bell, Cristiana I.P. Falvo, Kyle D Enns & Jay Sampson
The U.S. Geological Survey (USGS) Crustal Geophysics and Geochemistry Science Center (CGGSC) collaborated with the USGS Data at Risk (DaR) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Parkfield, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now CGGSC, between 1989 and 1994. The magnetotelluric data selected for this preservation project were collected in 1990 using USGS portable...

Geospatial Route Interface Tool (GRIT)

Michael O'Donnell &
The Geospatial Route Interface Tool (GRIT) is a Microsoft Windows desktop, graphical user interface application, written in an open source programming language (Python) that references ESRI Geographic Information System (GIS) python functions. The software streamlines and refines the process of analyzing transportation data and natural resources data, thereby improving the efficiency and standardization of travel management procedures for making land management recommendations and decisions relating to the interactions of routes and natural resources. The GRIT...

MODPATH: A particle-tracking model for MODFLOW

David W. Pollock
MODPATH is a particle-tracking post-processing program designed to work with MODFLOW, the USGS finite-difference groundwater flow model. MODPATH version 7 is the fourth major release since its original publication.



John M Patton, Caryl E Johnson & William L Yeck
neic-glass3 is an open source and platform independent seismic event detection and association algorithm developed by the United States Geological Survey (USGS) National Earthquake Information Center (NEIC) and Caryl Erin Johnson, PhD, Introspective Systems LLC. This algorithm converts a time series of seismic phase arrival times, back azimuth estimates from array beams, and cross-correlated detections into a catalog of earthquake detections at global, regional, and local distances. neic-glass3 is primarily intended for use as a...

fishStan Package Version 2

Richard A Erickson


Peter M. Powers
U.S. Geological Survey (USGS) National Seismic Hazard Mapping Project (NSHMP) code for performing probabilistic seismic hazard (PSHA) and related analyses. These codes are intended for use with seismic hazard models developed by the NSHMP for the U.S. and its territories.

Purge Analyzer Tool - For computation of in-well time of travel of groundwater under pumping conditions

Philip T Harte & Bradley J HUFFMAN

MODFLOW-2005: USGS three-dimensional finite-difference groundwater model

Arlen W. Harbaugh, Christian D. Langevin, Joseph D. Hughes, Richard G. Niswonger & Leonard F Konikow
MODFLOW is a three-dimensional (3D) finite-difference groundwater model that was first published in 1984. It has a modular structure that allows it to be easily modified to adapt the code for a particular application. Many new capabilities have been added to the original 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 (Harbaugh, 2005) simulates steady and nonsteady...

Summarize raster layers within overlapping polygons

Kevin P Krause & Benjamin P Gressler
Python code generated for the purpose of summarizing a defined set of discrete/categorical and/or continuous raster layers within zones that may be overlapping. Many widely used GIS tools to summarize raster layers within zones are not capable of handling overlapping zones. This code also allows for the computations to be completed over a number of separate raster layers at once and compiles the outputs into a single table for the discrete/categorical and continuous raster layers....

LCMAP Python Continuous Change Detection (PyCCD) algorithm


David S Mueller
The software program, QRev, written in Python, computes the discharge from moving-boat ADCP measurements using data collected with any of the Teledyne RD Instrument (TRDI) or SonTek bottom tracking ADCPs. The computation of discharge is independent of the manufacturer of the ADCP because QRev applies consistent algorithms independent of the data source. In addition, QRev automates filtering and quality checking of the collected data and provides feedback to the user of potential quality issues with...


Kate E. Allstadt, Eric M. Thompson, Michael Hearne & Katherine M. Biegel
This software is for calculating earthquake-induced ground failure hazard (i.e., landslide and liquefaction). These models are intended for regional or global scale applications, and are intended to be distributed in near-real-time, triggered by the Shakemaps.

SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground-Water Flow and Transport

Christian D Langevin, Daniel T. Thorne, Alyssa M. Dausman, Michael C. Sukop & Weixing Guo
SEAWAT is a generic MODFLOW/MT3DMS-based computer program designed to simulate three-dimensional variable-density groundwater flow coupled with multi-species solute and heat transport. The program has been used for a wide variety of groundwater studies including those focused on brine migration in continental aquifers as well as those focused on saltwater intrusion in coastal aquifers. SEAWAT uses the familiar structure of MODFLOW and MT3DMS. Thus, most of the commonly used pre and post-processors can be used to...

CyAN Field Integrated Exploratory Lakes Database (CyAN FIELD)

Patrick J Eslick, Robyn Conmy, Ariel R Donovan, Jennifer L Graham, Jennifer L Lanning-Rush, Keith A Loftin, Blake Schaeffer, Bridget Seeger, Richard Stumpf, Jeremy Werdell & Wilson Salls
The Cyanobacteria Assessment Network (CyAN) is a multi-agency project to develop remote sensing technology using satellite data to provide early warnings for cyanobacteria and algal blooms in U.S. lakes and reservoirs. To support remote sensing efforts by CyAN, validating satellite imagery is critical to developing early warning indicators for cyanobacteria and algae blooms. This open access R-script, R-Stuido tool has a Shiny app interface to visualize field and laboratory measurements for parameters relevant to cyanobacteria...

Electromagnetic Transfer Function File Conversion Utilities (EMTF FCU)

Anna Kelbert
Magnetotelluric impedances and other similar transfer functions are important for geophysical interpretation and for space weather hazards. I helped develop and continue to curate a database known as IRIS EMTF, http://ds.iris.edu/spud/emtf which uses something called EMTF XML format for storing the data. EMTF FCU v4.1 software consists of a set of freely available format conversion tools that can be used to convert these files to and from historical formats, rotate the data to alternative coordinate...

infoGW2visGWDB---Conversion of an infoGW object to a GWmaster object compatible with the visGWDB software

William H Asquith & Ronald C Seanor
An R groundwater-data processing utility for manipulating, veracity checking, and converting an 'infoGW' object to the 'GWmaster' object for the visGWDB software with demonstration for the Mississippi River Valley alluvial aquifer

GW_Chart version 1.30

Richard B Winston
GW_Chart is a program for creating specialized graphs used in groundwater studies. It incorporates the functionality of two previous programs, Budgeteer and Hydrograph Extractor and adds additional new features. There are seven major types of graphs created with GW_Chart: Calibration Plots Water Budget Plots Hydrographs Lake Plots Piper Diagrams Cell Water Budgets Farm Budgets It reads data from the following programs to create these plots: ZONEBUDGET MODFLOW MOC3D MODFLOW2000-GWT SUTRA MT3D HST3D UCODE-2005 OPR-PPR GW_Chart...

Floodplain and Channel Evaluation Tool: FACET

Samuel Lamont, Labeeb Ahmed, Marina Metes, Kristina Hopkins, Peter Claggett & Gregory Noe
FACET is a Python tool that uses open source modules to map the floodplain extent and derive reach-scale summaries of stream and floodplain geomorphic measurements from high-resolution digital elevation models (DEMs). Geomorphic measurements include channel width, stream bank height, floodplain width, and stream slope. FACET allows the user to hydrologically condition the DEM, generate the stream network, select one of two options for stream bank identification, map the floodplain extent using a Height Above Nearest...

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