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MODFLOW doesn't read .grb bile

bug

Status: Open.

#3009 In MODFLOW-ORG/modflow6;

· rbwinst-usgs opened on Sep 25, 2026

·  

6.8.2

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

Status: Open.

#2991 In MODFLOW-ORG/modflow6;

· KR-Ravindra opened on Sep 16, 2026

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

bug

Status: Open.

#2987 In MODFLOW-ORG/modflow6;

· 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

Status: Open.

#2982 In MODFLOW-ORG/modflow6;

· jdhughes-dev opened on Sep 13, 2026

·  

6.9.0

Strange LAK budget using the IMPLICIT formulation with MVR

bug

Status: Open.

#2968 In MODFLOW-ORG/modflow6;

· RyanConway91 opened on Sep 4, 2026

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

enhancement

Status: Open.

#2962 In MODFLOW-ORG/modflow6;

· jdhughes-dev opened on Sep 2, 2026

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

Status: Open.

#2950 In MODFLOW-ORG/modflow6;

· 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

Status: Open.

#2921 In MODFLOW-ORG/modflow6;

· jdhughes-dev opened on Aug 12, 2026

·  

6.9.0

GWT: gwfsatold omits the porosity when reconstructing the previous saturation

Status: Open.

#2917 In MODFLOW-ORG/modflow6;

· jdhughes-dev opened on Aug 11, 2026

·  

6.9.0

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

bug

Status: Open.

#2910 In MODFLOW-ORG/modflow6;

· jdhughes-dev opened on Aug 7, 2026

·  

6.9.0

Relax some input validations

enhancement

questionNeeds someone's attentionNeeds someone's attention

Status: Open.

#2865 In MODFLOW-ORG/modflow6;

· wpbonelli opened on Jun 25, 2026

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

enhancement

Status: Open.

#2838 In MODFLOW-ORG/modflow6;

· MickeyRush opened on Jun 12, 2026