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    631 repositories

    • EPATADA

      Public
      This R package can be used to compile and evaluate Water Quality Portal (WQP) data for samples collected from surface water monitoring sites on streams and lakes. It can be used to create applications that support water quality programs and help states, tribes, and other stakeholders efficiently analyze the data.
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •23•55•72•0•Updated Aug 21, 2025Aug 21, 2025

    • hwip

      Public
      Hazardous Waste Information Platform
      0•1•0•0•Updated Aug 21, 2025Aug 21, 2025

    • BMDS

      Public
      U.S EPA Benchmark Dose Modeling Software (BMDS)
      toxicologyrisk-assessmentdose-response-modelingorddose-response
      C++
      •
      MIT License
      •4•4•0•1•Updated Aug 21, 2025Aug 21, 2025

    • CompTox-ToxCast-tcpl

      Public
      US EPA's Toxicity Forecaster (ToxCast) Pipeline. More information on the ToxCast program available here: https://www.epa.gov/comptox-tools/toxicity-forecasting-toxcast
      ordcctecomptox
      R
      •
      Other
      •20•38•30•2•Updated Aug 21, 2025Aug 21, 2025

    • StreamCatTools

      Public
      R package to work with the StreamCat API within R and access the full suite of StreamCat catchment and watershed scale metrics for all NHDPlusV2 stream reaches and catchments.
      streamcat
      R
      •
      Creative Commons Zero v1.0 Universal
      •10•35•16•0•Updated Aug 21, 2025Aug 21, 2025

    • webcms

      Public
      Content management system for EPA's flagship website, www.epa.gov
      awsterraformomsdrupal-10
      JavaScript
      •9•11•0•25•Updated Aug 21, 2025Aug 21, 2025

    • SuRGE

      Public
      Code to reproduce the data files described in "Summertime methane and carbon dioxide emission rates and associated variables from a national-scale survey of 146 reservoirs in the United States" to be submitted to Limnology and Oceanography Letters in July 2025. The project was led by the US EPA's Office of Research and Development.
      ord
      HTML
      •
      MIT License
      •1•0•8•0•Updated Aug 21, 2025Aug 21, 2025

    • EnviroAtlas_v4

      Public
      EnvrioAtlas migration to JS4. Easy to use, interactive mapping application to access hundreds of maps showing environmental data
      ord
      Jupyter Notebook
      •
      MIT License
      •0•1•0•1•Updated Aug 21, 2025Aug 21, 2025

    • camd-eia-crosswalk

      Public
      A data crosswalk to integrate U.S. power sector emission and operation data from EPA to EIA
      oaregrid
      MIT License
      •16•44•39•2•Updated Aug 21, 2025Aug 21, 2025

    • power-sector-dev-portal

      Public
      JavaScript
      •
      MIT License
      •1•1•1•0•Updated Aug 21, 2025Aug 21, 2025

    • CIP-service

      Public
      Updated version of Catchment Index Processing (CIP) Service to provide an API where outside users can index their own GIS data to NHDPlus hydrography
      ow
      PLpgSQL
      •
      Creative Commons Zero v1.0 Universal
      •2•5•0•0•Updated Aug 21, 2025Aug 21, 2025

    • provisional_habs

      Public
      Repository holding data from Harmful Algal Bloom (HAB) monitoring conducted by United States Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modelling, Atlantic Coastal Environmental Sciences Division researchers
      Creative Commons Zero v1.0 Universal
      •2•2•0•0•Updated Aug 21, 2025Aug 21, 2025

    • code-json-generator

      Public
      Automation that scrapes USEPA github and provides that metadata for code.gov
      oms
      JavaScript
      •
      MIT License
      •10•0•0•0•Updated Aug 21, 2025Aug 21, 2025

    • campdRShinyDataSource

      Public
      R
      •
      MIT License
      •2•3•0•0•Updated Aug 21, 2025Aug 21, 2025

    • Air-Sensor-Network-Analysis-Tool-Public-

      Public
      A tool to understand air sensor performance compared to nearby air monitors and to understand local air quality.
      R
      •
      MIT License
      •3•6•0•0•Updated Aug 20, 2025Aug 20, 2025

    • govchat

      Public
      Customized GenAI chatbot interface for EPA employees
      nextjsomsgenaigenai-chatbot
      TypeScript
      •
      MIT License
      •9.3k•2•0•0•Updated Aug 20, 2025Aug 20, 2025

    • egrid

      Public
      Emissions & Generation Resource Integrated Database (eGRID)
      oaregrid
      R
      •
      MIT License
      •8•19•8•1•Updated Aug 20, 2025Aug 20, 2025

    • AMET

      Public
      Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)
      ord
      R
      •27•25•1•1•Updated Aug 20, 2025Aug 20, 2025

    • BMDS-UI

      Public
      U.S. EPA Benchmark Dose Modeling Software User Interface (BMDS Desktop and BMDS Online)
      toxicologyorddose-responserisk-assesment
      CSS
      •
      MIT License
      •3•4•0•0•Updated Aug 20, 2025Aug 20, 2025

    • WATERSGeoViewer

      Public
      Source Code for the EPA WATERS GeoViewer
      ow
      Python
      •
      Creative Commons Zero v1.0 Universal
      •0•0•0•0•Updated Aug 20, 2025Aug 20, 2025

    • CMAQ_Projects

      Public
      Configuration and evaluation information on Community Multiscale Air Quality (CMAQ) model applications.
      MIT License
      •0•1•0•0•Updated Aug 20, 2025Aug 20, 2025

    • IntraCMS

      Public
      US EPA Intranet CMS
      phpdrupaloms
      CSS
      •
      MIT License
      •3•6•0•0•Updated Aug 19, 2025Aug 19, 2025

    • ShinyVB

      Public
      Shiny version of Virtual Beach
      R
      •
      Apache License 2.0
      •1•0•0•0•Updated Aug 19, 2025Aug 19, 2025

    • FrEDI

      Public
      FrEDI estimates annual physical and economic impacts from temperature to the U.S., through the 21st century
      oar
      HTML
      •
      Other
      •15•15•6•1•Updated Aug 19, 2025Aug 19, 2025

    • MCSimMod

      Public
      MCSim Models in R
      rodeode-modelpbpkpbpk-modeling
      C
      •
      GNU General Public License v3.0
      •0•7•1•0•Updated Aug 19, 2025Aug 19, 2025

    • SSN2

      Public
      SSN2: Spatial Modeling on Stream Networks in R
      R
      •
      GNU General Public License v3.0
      •7•23•0•0•Updated Aug 19, 2025Aug 19, 2025

    • GEPA

      Public
      This repository contains the code for the EPA U.S. gridded methane greenhouse gas inventory (gridded GHGI)
      Python
      •
      MIT License
      •7•8•0•0•Updated Aug 19, 2025Aug 19, 2025

    • FrEDI_Data

      Public
      Data repo for FrEDI, a tool to estimate economic impacts from temperature
      fredy
      HTML
      •
      MIT License
      •2•1•6•1•Updated Aug 19, 2025Aug 19, 2025

    • spd-hfc-data-hub

      Public
      This repo contains the tables for the RY 2024 HFC Data Hub.
      MIT License
      •0•0•0•0•Updated Aug 19, 2025Aug 19, 2025

    • the-manifest-game

      Public
      Interactive decision tree to guide e-Manifest users
      olem
      TypeScript
      •
      MIT License
      •3•0•0•4•Updated Aug 18, 2025Aug 18, 2025