Issues

• bug(lak): IMPLICIT lakes ignore BUY density terms

  bug
  MODFLOW-ORG/modflow6#3025 · Filter by author jdhughes-dev opened on Oct 2, 2026 · 6.9.0

• FMI grid-equivalence check can be skipped entirely for a mismatched grid type

  MODFLOW-ORG/modflow6#2991 · Filter by author KR-Ravindra opened on Sep 16, 2026
  1

• GWE-GWE exchange can be linked to the wrong GWF-GWF exchange

  bug
  MODFLOW-ORG/modflow6#2987 · Filter by author jdhughes-dev opened on Sep 15, 2026

• Buoyancy constraint on a GWF-GWF exchange depends on the order the models are listed and is undocumented

  bug
  MODFLOW-ORG/modflow6#2982 · Filter by author jdhughes-dev opened on Sep 13, 2026 · 6.9.0
  2

  

• Allow the GWT and GWE IDOMAIN to be a subset of the GWF IDOMAIN

  enhancement
  MODFLOW-ORG/modflow6#2962 · Filter by author jdhughes-dev opened on Sep 2, 2026
  1

• docs(maw): SCRN_TOP and SCRN_BOT do not say what they measure

  MODFLOW-ORG/modflow6#2950 · Filter by author jdhughes-dev opened on Aug 27, 2026 · 6.9.0
  

• GWT: solute in water retained against drainage is not carried across time steps when specific yield is less than porosity

  MODFLOW-ORG/modflow6#2921 · Filter by author jdhughes-dev opened on Aug 12, 2026 · 6.9.0
  1

  

• GWT: gwfsatold omits the porosity when reconstructing the previous saturation

  MODFLOW-ORG/modflow6#2917 · Filter by author jdhughes-dev opened on Aug 11, 2026 · 6.9.0
  7

  

• UZF wave-creation tolerances are scaled as though the model length unit were feet

  bug
  MODFLOW-ORG/modflow6#2910 · Filter by author jdhughes-dev opened on Aug 7, 2026 · 6.9.0
  2

• Relax some input validations

  enhancementquestion
  MODFLOW-ORG/modflow6#2865 · Filter by author wpbonelli opened on Jun 25, 2026

• Treat GWF-GWF Exchanges Like GWF Packages in SSM Package for Child-Only Transport

  enhancement
  MODFLOW-ORG/modflow6#2838 · Filter by author MickeyRush opened on Jun 12, 2026
  4

• Restructure example notebooks

  documentationexamples
  MODFLOW-ORG/modflow6#2834 · Filter by author wpbonelli opened on Jun 12, 2026

• Container image definitions

  enhancement
  MODFLOW-ORG/modflow6#2793 · Filter by author wpbonelli opened on Apr 29, 2026
  4

  

• Command to show DFN specification

  enhancement
  MODFLOW-ORG/modflow6#2777 · Filter by author wpbonelli opened on Apr 19, 2026
  1

• ATS retry is not executed when running MODFLOW via XMI

  bug
  MODFLOW-ORG/modflow6#2756 · Filter by author HendrikKok opened on Apr 7, 2026
  2

  

• Add option to limit RCH based on head

  enhancement
  MODFLOW-ORG/modflow6#2688 · Filter by author RyanConway91 opened on Feb 3, 2026

• Add vertex information to an interface model

  enhancement
  Feature

  MODFLOW-ORG/modflow6#2650 · Filter by author mjr-deltares opened on Jan 15, 2026
  

• Print complete profiler summary table

  enhancement
  Feature

  MODFLOW-ORG/modflow6#2645 · Filter by author mjr-deltares opened on Jan 14, 2026 · low priority
  

• Adopt ifx, drop ifort

  cidependenciesonhold
  MODFLOW-ORG/modflow6#2575 · Filter by author wpbonelli opened on Oct 23, 2025
  1

• Retreating lakes cause local groundwater head increases

  enhancement
  MODFLOW-ORG/modflow6#2568 · Filter by author rubencalje opened on Oct 14, 2025
  5

• Terminate with error if missing timeseries file path

  bug
  MODFLOW-ORG/modflow6#2440 · Filter by author wpbonelli opened on Aug 4, 2025

• Complete IDM integration for released models

  code refactormaintenance
  MODFLOW-ORG/modflow6#2366 · Filter by author mjreno opened on Jun 20, 2025
  

• Budget error when constant concentration or constant temperature cell is attached to other model

  bug
  MODFLOW-ORG/modflow6#2311 · Filter by author mjr-deltares opened on May 7, 2025
  1

  

• LAKBED-COND observation type

  enhancement
  MODFLOW-ORG/modflow6#2275 · Filter by author emorway-usgs opened on Apr 9, 2025

• Trivial model does not converge or crashes (floating overflow) with buoyancy

  bug
  MODFLOW-ORG/modflow6#2272 · Filter by author Huite opened on Apr 8, 2025
  2