Repositories list

• EPATADA

  Public

  USEPA/EPATADA’s past year of commit activity
  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 lake…

  ow

  ow

  R

  •

  Creative Commons Zero v1.0 Universal

  •2929 forks in USEPA/EPATADA•7676 stars in USEPA/EPATADA•152152 issues in USEPA/EPATADA•55 pull requests in USEPA/EPATADA•Updated Oct 30, 2026Oct 30, 2026

• rExpertQuery

  Public

  USEPA/rExpertQuery’s past year of commit activity
  An R package designed for retrieving ATTAINS data efficiently via Expert Query web services.

  ow

  ow

  R

  •

  Creative Commons Zero v1.0 Universal

  •55 forks in USEPA/rExpertQuery•88 stars in USEPA/rExpertQuery•44 issues in USEPA/rExpertQuery•00 pull requests in USEPA/rExpertQuery•Updated Oct 30, 2026Oct 30, 2026

• pf_python_modelbuilding

  Public

  USEPA/pf_python_modelbuilding’s past year of commit activity
  Python based code to create qsar models for WebTEST2.0 platform

  Python

  •22 forks in USEPA/pf_python_modelbuilding•22 stars in USEPA/pf_python_modelbuilding•00 issues in USEPA/pf_python_modelbuilding•00 pull requests in USEPA/pf_python_modelbuilding•Updated Oct 29, 2026Oct 29, 2026

• provisional_habs

  Public

  USEPA/provisional_habs’s past year of commit activity
  Repository holding data from Harmful Algal Bloom (HAB) monitoring conducted by United States Environmental Protection Agency, Office of Research and Development…

  Creative Commons Zero v1.0 Universal

  •22 forks in USEPA/provisional_habs•33 stars in USEPA/provisional_habs•00 issues in USEPA/provisional_habs•00 pull requests in USEPA/provisional_habs•Updated Oct 29, 2026Oct 29, 2026

• rsigserver

  Public

  USEPA/rsigserver’s past year of commit activity
  C

  •

  Other

  •00 forks in USEPA/rsigserver•11 star in USEPA/rsigserver•22 issues in USEPA/rsigserver•00 pull requests in USEPA/rsigserver•Updated Oct 29, 2026Oct 29, 2026

• rsig3d

  Public

  USEPA/rsig3d’s past year of commit activity
  HTML

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  MIT License

  •00 forks in USEPA/rsig3d•11 star in USEPA/rsig3d•00 issues in USEPA/rsig3d•00 pull requests in USEPA/rsig3d•Updated Oct 29, 2026Oct 29, 2026

• basin-bmp-scenario-sim

  Public

  USEPA/basin-bmp-scenario-sim’s past year of commit activity
  Probabilistic simulation of basin-scale best management / conservation practice implementation scenarios depicting aggregate costs and impacts on basin-outlet p…

  Python

  •

  MIT License

  •33 forks in USEPA/basin-bmp-scenario-sim•22 stars in USEPA/basin-bmp-scenario-sim•22 issues in USEPA/basin-bmp-scenario-sim•11 pull request in USEPA/basin-bmp-scenario-sim•Updated Oct 29, 2026Oct 29, 2026

• csb-rebate-forms-app

  Public

  USEPA/csb-rebate-forms-app’s past year of commit activity
  Code related to the U.S. EPA Clean School Bus (CSB) data collection system. Specifically, this repository provides code for the cloud.gov hosted CSB Rebate Form…

  CSS

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  Creative Commons Zero v1.0 Universal

  •22 forks in USEPA/csb-rebate-forms-app•22 stars in USEPA/csb-rebate-forms-app•00 issues in USEPA/csb-rebate-forms-app•11 pull request in USEPA/csb-rebate-forms-app•Updated Oct 29, 2026Oct 29, 2026

• airnow10

  Public

  USEPA/airnow10’s past year of commit activity
  Core ddev container fro airnow in drupal 10

  Shell

  •00 forks in USEPA/airnow10•00 stars in USEPA/airnow10•00 issues in USEPA/airnow10•11 pull request in USEPA/airnow10•Updated Oct 29, 2026Oct 29, 2026

• code-json-generator

  Public

  USEPA/code-json-generator’s past year of commit activity
  Automation that scrapes USEPA github and provides that metadata for code.gov

  oms

  oms

  JavaScript

  •

  MIT License

  •99 forks in USEPA/code-json-generator•22 stars in USEPA/code-json-generator•00 issues in USEPA/code-json-generator•00 pull requests in USEPA/code-json-generator•Updated Oct 29, 2026Oct 29, 2026

• webcms

  Public

  USEPA/webcms’s past year of commit activity
  Content management system for EPA's flagship website, www.epa.gov

  awsterraformoms+ 1

  awsterraformomsdrupal-10

  JavaScript

  •

  MIT License

  •88 forks in USEPA/webcms•1313 stars in USEPA/webcms•00 issues in USEPA/webcms•4141 pull requests in USEPA/webcms•Updated Oct 29, 2026Oct 29, 2026

• spmodel

  Public

  USEPA/spmodel’s past year of commit activity
  spmodel: Spatial Statistical Modeling and Prediction in R

  R

  •

  GNU General Public License v3.0

  •55 forks in USEPA/spmodel•2727 stars in USEPA/spmodel•00 issues in USEPA/spmodel•00 pull requests in USEPA/spmodel•Updated Oct 28, 2026Oct 28, 2026

• EnviroAtlas_DB

  Public

  USEPA/EnviroAtlas_DB’s past year of commit activity
  Repo for storing Enviroatlas DB

  JavaScript

  •00 forks in USEPA/EnviroAtlas_DB•11 star in USEPA/EnviroAtlas_DB•00 issues in USEPA/EnviroAtlas_DB•00 pull requests in USEPA/EnviroAtlas_DB•Updated Oct 28, 2026Oct 28, 2026

• BMDS

  Public

  USEPA/BMDS’s past year of commit activity
  U.S EPA Benchmark Dose Modeling Software (BMDS)

  researchtoxicologyrisk-assessment+ 3

  researchtoxicologyrisk-assessmentdose-response-modelingorddose-response

  C++

  •

  MIT License

  •77 forks in USEPA/BMDS•1414 stars in USEPA/BMDS•22 issues in USEPA/BMDS•33 pull requests in USEPA/BMDS•Updated Oct 28, 2026Oct 28, 2026

• EnviroAtlas_v4

  Public

  USEPA/EnviroAtlas_v4’s past year of commit activity
  EnviroAtlas migration to JS4. Easy to use, interactive mapping application to access maps showing environmental data

  researchord

  researchord

  Svelte

  •

  MIT License

  •11 fork in USEPA/EnviroAtlas_v4•66 stars in USEPA/EnviroAtlas_v4•00 issues in USEPA/EnviroAtlas_v4•00 pull requests in USEPA/EnviroAtlas_v4•Updated Oct 28, 2026Oct 28, 2026

• CRACMM

  Public

  USEPA/CRACMM’s past year of commit activity
  The Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM) is a description of atmospheric NOx-VOC-ozone-aerosol chemistry and associated metada…

  MATLAB

  •

  Other

  •1111 forks in USEPA/CRACMM•99 stars in USEPA/CRACMM•11 issue in USEPA/CRACMM•11 pull request in USEPA/CRACMM•Updated Oct 28, 2026Oct 28, 2026

• Lepak_Hg_Models

  Public

  USEPA/Lepak_Hg_Models’s past year of commit activity
  NLA sediment Hg analysis for Lepak et al.

  R

  •

  MIT License

  •00 forks in USEPA/Lepak_Hg_Models•11 star in USEPA/Lepak_Hg_Models•00 issues in USEPA/Lepak_Hg_Models•00 pull requests in USEPA/Lepak_Hg_Models•Updated Oct 27, 2026Oct 27, 2026

• mywaterway

  Public

  USEPA/mywaterway’s past year of commit activity
  How's My Waterway provides information about the conditions streams, lakes and other waters anywhere in the U.S.

  ow

  ow

  TypeScript

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  Creative Commons Zero v1.0 Universal

  •1313 forks in USEPA/mywaterway•2121 stars in USEPA/mywaterway•00 issues in USEPA/mywaterway•00 pull requests in USEPA/mywaterway•Updated Oct 26, 2026Oct 26, 2026

• pyaqsapi

  Public

  USEPA/pyaqsapi’s past year of commit activity
  A python 3 package to retrieve ambient air monitoring data from the United States Environmental Protection Agency’s (US EPA) Air Quality System (AQS) Data Mart…

  environmental-monitoringpython-packagedatamart+ 5

  environmental-monitoringpython-packagedatamartaqsusepar03environmental-data-retrievalairmonitoring

  Python

  •

  MIT License

  •1010 forks in USEPA/pyaqsapi•3030 stars in USEPA/pyaqsapi•33 issues in USEPA/pyaqsapi•00 pull requests in USEPA/pyaqsapi•Updated Oct 26, 2026Oct 26, 2026

• Pesticide-Label-Data-Entry-Tool

  Public

  USEPA/Pesticide-Label-Data-Entry-Tool’s past year of commit activity
  R Shiny application for enabling easier data entry of pesticide label information.

  R

  •00 forks in USEPA/Pesticide-Label-Data-Entry-Tool•00 stars in USEPA/Pesticide-Label-Data-Entry-Tool•00 issues in USEPA/Pesticide-Label-Data-Entry-Tool•00 pull requests in USEPA/Pesticide-Label-Data-Entry-Tool•Updated Oct 26, 2026Oct 26, 2026

• ctxR

  Public

  USEPA/ctxR’s past year of commit activity
  US EPA's ctxR: Utilities for Interacting with the CTX APIs in R without prior API knowledge https://www.epa.gov/comptox-tools/computational-toxicology-and-expos…

  apiresearchctx+ 3

  apiresearchctxordcctecomptox

  R

  •

  GNU General Public License v3.0

  •1111 forks in USEPA/ctxR•2323 stars in USEPA/ctxR•88 issues in USEPA/ctxR•22 pull requests in USEPA/ctxR•Updated Oct 26, 2026Oct 26, 2026

• spsurvey

  Public

  USEPA/spsurvey’s past year of commit activity
  spsurvey: Spatial Sampling Design and Analysis in R

  researchord

  researchord

  R

  •

  GNU General Public License v3.0

  •99 forks in USEPA/spsurvey•2222 stars in USEPA/spsurvey•11 issue in USEPA/spsurvey•00 pull requests in USEPA/spsurvey•Updated Oct 26, 2026Oct 26, 2026

• TMDLDash

  Public

  USEPA/TMDLDash’s past year of commit activity
  The ExpertQueryTMDLDashboard is an R Shiny application designed to summarize and count TMDLS based on user inputs to filters on various fields including state, …

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •00 forks in USEPA/TMDLDash•00 stars in USEPA/TMDLDash•00 issues in USEPA/TMDLDash•00 pull requests in USEPA/TMDLDash•Updated Oct 26, 2026Oct 26, 2026

• IntraCMS

  Public

  USEPA/IntraCMS’s past year of commit activity
  US EPA Intranet CMS

  phpdrupaloms

  phpdrupaloms

  CSS

  •

  MIT License

  •33 forks in USEPA/IntraCMS•88 stars in USEPA/IntraCMS•00 issues in USEPA/IntraCMS•11 pull request in USEPA/IntraCMS•Updated Oct 23, 2026Oct 23, 2026

• SuRGE

  Public

  USEPA/SuRGE’s past year of commit activity
  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…

  researchord

  researchord

  HTML

  •

  MIT License

  •11 fork in USEPA/SuRGE•22 stars in USEPA/SuRGE•88 issues in USEPA/SuRGE•00 pull requests in USEPA/SuRGE•Updated Oct 23, 2026Oct 23, 2026

• SSN2

  Public

  USEPA/SSN2’s past year of commit activity
  SSN2: Spatial Modeling on Stream Networks in R

  R

  •

  GNU General Public License v3.0

  •88 forks in USEPA/SSN2•2626 stars in USEPA/SSN2•00 issues in USEPA/SSN2•00 pull requests in USEPA/SSN2•Updated Oct 22, 2026Oct 22, 2026

• StreamCatTools

  Public

  USEPA/StreamCatTools’s past year of commit activity
  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 …

  owstreamcat

  owstreamcat

  HTML

  •

  Other

  •1515 forks in USEPA/StreamCatTools•4141 stars in USEPA/StreamCatTools•1212 issues in USEPA/StreamCatTools•00 pull requests in USEPA/StreamCatTools•Updated Oct 22, 2026Oct 22, 2026

• expert-query

  Public

  USEPA/expert-query’s past year of commit activity
  Expert Query provides the public, EPA, state, and tribal users the ability to download detailed ATTAINS data.

  TypeScript

  •

  Creative Commons Zero v1.0 Universal

  •44 forks in USEPA/expert-query•11 star in USEPA/expert-query•00 issues in USEPA/expert-query•00 pull requests in USEPA/expert-query•Updated Oct 22, 2026Oct 22, 2026

• ccte-container-scan

  Public

  USEPA/ccte-container-scan’s past year of commit activity
  Python

  •00 forks in USEPA/ccte-container-scan•11 star in USEPA/ccte-container-scan•00 issues in USEPA/ccte-container-scan•00 pull requests in USEPA/ccte-container-scan•Updated Oct 22, 2026Oct 22, 2026

• Sewersheds

  Public

  USEPA/Sewersheds’s past year of commit activity
  Repository for code related to work on modeling sewershed boundaries by ORD and OW

  HTML

  •

  MIT License

  •33 forks in USEPA/Sewersheds•1111 stars in USEPA/Sewersheds•00 issues in USEPA/Sewersheds•00 pull requests in USEPA/Sewersheds•Updated Oct 22, 2026Oct 22, 2026