diff --git a/src/Model/GroundWaterEnergy/gwe-uze.f90 b/src/Model/GroundWaterEnergy/gwe-uze.f90
index 978a5af0ca4..6a2dc89ec2f 100644
--- a/src/Model/GroundWaterEnergy/gwe-uze.f90
+++ b/src/Model/GroundWaterEnergy/gwe-uze.f90
@@ -79,6 +79,7 @@ module GweUzeModule
     procedure :: pak_rp_obs => uze_rp_obs
     procedure :: pak_bd_obs => uze_bd_obs
     procedure :: pak_set_stressperiod => uze_set_stressperiod
+    procedure :: apt_chk_aux_area => uze_chk_aux_area
     procedure :: bnd_ac => uze_ac
     procedure :: bnd_mc => uze_mc
     procedure :: get_mvr_depvar
@@ -279,6 +280,49 @@ subroutine find_uze_package(this)
     this%idxbudtheq = this%flowbudptr%nbudterm + 1
   end subroutine find_uze_package
 
+  subroutine uze_rp(this)
+    ! -- dummy
+    class(GweUzeType), intent(inout) :: this
+    ! -- local
+    integer(I4B) :: nuz
+    integer(I4B) :: idxbudgwf
+    integer(I4B) :: nbudterm
+    !
+    ! Check for multiple UZF objects per cell, if found report to user
+    ! Determine index of 'gwf' entry in flowbudptr since the variable
+    ! this%idxbudgwf has not been set yet
+    nbudterm = this%tspapttype%flowbudptr%nbudterm
+    do idxbudgwf = 1, nbudterm
+      if (this%flowbudptr%budterm(idxbudgwf)%flowtype == '             GWF') exit
+    end do
+    nuz = this%flowbudptr%budterm(idxbudgwf)%maxlist
+    call this%uzarea_chk(nuz, idxbudgwf)
+    !
+    ! -- call parent _rp routines
+    call this%TspAptType%bnd_rp()
+  end subroutine uze_rp
+
+  !> @brief Check to ensure auxillary areas equal respective cell areas
+  !<
+  subroutine uze_chk_aux_area(this)
+    ! -- dummy
+    class(GweUzeType), intent(inout) :: this
+    ! -- local
+    integer(I4B) :: nuz
+    integer(I4B) :: idxbudgwf
+    integer(I4B) :: nbudterm
+    !
+    ! if discrepancy in areas found, report to user
+    ! Determine index of 'gwf' entry in flowbudptr since the variable
+    ! this%idxbudgwf has not been set yet
+    nbudterm = this%tspapttype%flowbudptr%nbudterm
+    do idxbudgwf = 1, nbudterm
+      if (this%flowbudptr%budterm(idxbudgwf)%flowtype == '             GWF') exit
+    end do
+    nuz = this%flowbudptr%budterm(idxbudgwf)%maxlist
+    call this%uzarea_chk(nuz, idxbudgwf)
+  end subroutine uze_chk_aux_area
+
   !> @brief Add package connection to matrix.
   !!
   !! Overrides apt_ac to fold the UZE heat balance terms into the row
diff --git a/src/Model/GroundWaterFlow/gwf-uzf.f90 b/src/Model/GroundWaterFlow/gwf-uzf.f90
index 00f7910b3f7..e1d1d08664b 100644
--- a/src/Model/GroundWaterFlow/gwf-uzf.f90
+++ b/src/Model/GroundWaterFlow/gwf-uzf.f90
@@ -649,6 +649,9 @@ subroutine uzf_rp(this)
     integer(I4B) :: j
     integer(I4B) :: jj
     integer(I4B) :: ierr
+    integer(I4B) :: idxbudgwf
+    integer(I4B) :: nbudterm
+    real(DP) :: rval1
     real(DP), pointer :: bndElem => null()
     ! -- table output
     character(len=20) :: cellid
@@ -915,6 +918,22 @@ subroutine uzf_rp(this)
     !
     ! -- Save old ss flag
     this%issflagold = this%issflag
+    !
+    ! -- Update uzf area
+    if (this%iauxmultcol > 0) then
+      nbudterm = this%budobj%nbudterm
+      do idxbudgwf = 1, nbudterm
+        if (this%budobj%budterm(idxbudgwf)%flowtype == '             GWF') exit
+      end do
+
+      do i = 1, this%nodes
+        if (this%noupdateauxvar(this%iauxmultcol) /= 0) cycle
+        this%auxvar(this%iauxmultcol, i) = this%uauxvar(this%iauxmultcol, i)
+        rval1 = this%uauxvar(this%iauxmultcol, i)
+        call this%uzfobj%setdatauzfarea(i, rval1)
+        this%budobj%budterm(idxbudgwf)%auxvar(1, i) = this%uzfobj%uzfarea(i)
+      end do
+    end if
   end subroutine uzf_rp
 
   !> @brief Advance UZF Package
diff --git a/src/Model/TransportModel/tsp-apt.f90 b/src/Model/TransportModel/tsp-apt.f90
index e8f03957c34..2fc7acf9fb9 100644
--- a/src/Model/TransportModel/tsp-apt.f90
+++ b/src/Model/TransportModel/tsp-apt.f90
@@ -136,6 +136,7 @@ module TspAptModule
     procedure :: bnd_reset => apt_reset
     procedure :: bnd_fc => apt_fc
     procedure, public :: apt_fc_expanded ! Made public for uze
+    procedure, public :: apt_chk_aux_area ! Made public for uze
     procedure :: pak_fc_expanded
     procedure, private :: apt_fc_nonexpanded
     procedure, public :: apt_cfupdate ! Made public for uze
@@ -383,6 +384,9 @@ subroutine apt_rp(this)
     character(len=*), parameter :: fmtlsp = &
       &"(1X,/1X,'REUSING ',A,'S FROM LAST STRESS PERIOD')"
     !
+    ! -- run aux area check (for uze)
+    call this%apt_chk_aux_area()
+    !
     ! -- set nbound to maxbound
     this%nbound = this%maxbound
     !
@@ -479,6 +483,12 @@ subroutine apt_rp(this)
     end do
   end subroutine apt_rp
 
+  subroutine apt_chk_aux_area(this)
+    ! -- dummy
+    class(TspAptType), intent(inout) :: this
+    ! function available for override by packages
+  end subroutine apt_chk_aux_area
+
   !> @brief Advanced package transport set stress period routine.
   !!
   !! Set a stress period attribute for an advanced transport package feature