Software

SAID 2.0 is a Python port of the Matlab application SAID 1.1. It was developed by the USGS to assist in creating linear regression models that relate constituent and surrogate parameters. SAID provides visual and quantitative diagnostics to the user. The tool also processes acoustic parameters to be used as explanatory variables for suspended-sediment concentrations (SSC).

GSFLOW is a coupled Groundwater and Surface-Water Flow model based on the integration of the U.S. Geological Survey Precipitation-Runoff Modeling System (PRMS; Markstrom and others, 2015) and the U.S. Geological Survey Modular Groundwater Flow Model (MODFLOW- 2005, Harbaugh, 2005; MODFLOW-NWT, Niswonger and others, 2011). In addition to the basic PRMS and MODFLOW simulation methods...

MODFLOW-NWT is a Newton formulation for MODFLOW-2005. MODFLOW-NWT is a standalone program that is intended for solving problems involving drying and rewetting nonlinearities of the unconfined groundwater-flow equation. MODFLOW-NWT must be used with the Upstream-Weighting (UPW) Package for calculating intercell conductances in a different manner than is done in the Block-Centered Flow...

MODFLOW-NWT is a Newton formulation for MODFLOW-2005. MODFLOW-NWT is a standalone program that is intended for solving problems involving drying and rewetting nonlinearities of the unconfined groundwater-flow equation. MODFLOW-NWT must be used with the Upstream-Weighting (UPW) Package for calculating intercell conductances in a different manner than is done in the Block-Centered Flow...

MODFLOW-NWT is a Newton formulation for MODFLOW-2005. MODFLOW-NWT is a standalone program that is intended for solving problems involving drying and rewetting nonlinearities of the unconfined groundwater-flow equation. MODFLOW-NWT must be used with the Upstream-Weighting (UPW) Package for calculating intercell conductances in a different manner than is done in the Block-Centered Flow...

ModelMuse version 5.4 enhances ModelMuse by adding support for the Groundwater Energy Transport model in MODFLOW 6.

A data pipeline for fetching, processing, and analyzing riverine surface water pesticide trends and benchmark comparisons across the United States (2013-2022)

The version 3.0 release of pywatershed contains two major new areas of development: stream temperature representation, and agriculture irrigation estimation. The stream temperature representation reproduces the capabilities from PRMS 5.2.1.1. To this end, the following new classes have been implemented in pywatershed: PRMSStreamTemp, PRMSStreamTempHumidityCBH...

MODFLOW is a popular open-source groundwater flow model distributed by the U.S. Geological Survey.

This repository contains a reproducible data pipeline, implemented in R using the targets framework, that analyzes trends in groundwater quality across the conterminous United States for the period 2002–2021. The pipeline fetches monitoring well network data and constituent observations from USGS ScienceBase, formats and joins these observations with spatial information (well network...

This software repository contains code which does two distinct but related tasks for use in the National Integrated Water Availability Assessment (IWAA), version 1b, Trends chapter. First, it assigns hydroclimatic regions and aggregated hydroclimatic regions to 12-digit hydrologic unit codes (HUC12s) in Hawaii, Puerto Rico, and Alaska. Second, it generates tables and figures used in the...

This pipeline calculates a simple monthly water budget that includes water supply and consumptive use for irrigation, and public supply for 12-digit Hydrologic Unit Code (HUC12) subwatersheds across the conterminous United States for water years 2000-2020. Water budget results also include an assessment of supply and use imbalances within the context of historical climatic conditions to...