diff --git a/reg_tests/grid_gen/driver.cray.sh b/reg_tests/grid_gen/driver.cray.sh
index 619286a9f..d19500ac4 100755
--- a/reg_tests/grid_gen/driver.cray.sh
+++ b/reg_tests/grid_gen/driver.cray.sh
@@ -66,10 +66,17 @@ bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J c96.uniform -W 0:15
 bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J gfdl.regional -W 0:10 -M 2400 \
         -w 'ended(c96.uniform)' -extsched 'CRAYLINUX[]' "export NODES=1; $PWD/gfdl.regional.sh"
 
+#-----------------------------------------------------------------------------
+# ESG regional grid
+#-----------------------------------------------------------------------------
+
+bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J esg.regional -W 0:10 -M 2400 \
+        -w 'ended(gfdl.regional)' -extsched 'CRAYLINUX[]' "export NODES=1; $PWD/esg.regional.sh"
+
 #-----------------------------------------------------------------------------
 # Create summary log.
 #-----------------------------------------------------------------------------
 
-bsub -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J summary -R "rusage[mem=100]" -W 0:01 -w 'ended(gfdl.regional)' "grep -a '<<<' $LOG_FILE >> $SUM_FILE"
+bsub -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J summary -R "rusage[mem=100]" -W 0:01 -w 'ended(esg.regional)' "grep -a '<<<' $LOG_FILE >> $SUM_FILE"
 
 exit
diff --git a/reg_tests/grid_gen/driver.dell.sh b/reg_tests/grid_gen/driver.dell.sh
index 12eb2a0ac..45880c8a7 100755
--- a/reg_tests/grid_gen/driver.dell.sh
+++ b/reg_tests/grid_gen/driver.dell.sh
@@ -63,9 +63,16 @@ bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J c96.uniform -W 0:15
 bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J gfdl.regional -W 0:10 -x -n 24 -w 'ended(c96.uniform)' \
         -R "span[ptile=24]" -R "affinity[core(1):distribute=balance]" "$PWD/gfdl.regional.sh"
 
+#-----------------------------------------------------------------------------
+# ESG regional grid
+#-----------------------------------------------------------------------------
+
+bsub -e $LOG_FILE -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J esg.regional -W 0:10 -x -n 24 -w 'ended(gfdl.regional)' \
+        -R "span[ptile=24]" -R "affinity[core(1):distribute=balance]" "$PWD/esg.regional.sh"
+
 #-----------------------------------------------------------------------------
 # Create summary log.
 #-----------------------------------------------------------------------------
 
 bsub -o $LOG_FILE -q $QUEUE -P $PROJECT_CODE -J summary -R "affinity[core(1)]" -R "rusage[mem=100]" -W 0:01 \
-     -w 'ended(gfdl.regional)' "grep -a '<<<' $LOG_FILE >> $SUM_FILE"
+     -w 'ended(esg.regional)' "grep -a '<<<' $LOG_FILE >> $SUM_FILE"
diff --git a/reg_tests/grid_gen/driver.hera.sh b/reg_tests/grid_gen/driver.hera.sh
index 87a462920..1573a6c5a 100755
--- a/reg_tests/grid_gen/driver.hera.sh
+++ b/reg_tests/grid_gen/driver.hera.sh
@@ -68,12 +68,19 @@ TEST1=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:15:00 -A $PROJECT_
 TEST2=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J gfdl.regional \
       -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST1 ./gfdl.regional.sh)
 
+#-----------------------------------------------------------------------------
+# esg regional grid
+#-----------------------------------------------------------------------------
+
+TEST3=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J esg.regional \
+      -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST2 ./esg.regional.sh)
+
 #-----------------------------------------------------------------------------
 # Create summary log.
 #-----------------------------------------------------------------------------
 
 sbatch --nodes=1 -t 0:01:00 -A $PROJECT_CODE -J grid_summary -o $LOG_FILE -e $LOG_FILE \
-       --open-mode=append -q $QUEUE -d afterok:$TEST2 << EOF
+       --open-mode=append -q $QUEUE -d afterok:$TEST3 << EOF
 #!/bin/bash
 grep -a '<<<' $LOG_FILE  > $SUM_FILE
 EOF
diff --git a/reg_tests/grid_gen/driver.jet.sh b/reg_tests/grid_gen/driver.jet.sh
index ea0db14f1..6cd9c53d1 100755
--- a/reg_tests/grid_gen/driver.jet.sh
+++ b/reg_tests/grid_gen/driver.jet.sh
@@ -66,12 +66,19 @@ TEST1=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:15:00 -A $PROJECT_
 TEST2=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J gfdl.regional \
       --partition=xjet -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST1 ./gfdl.regional.sh)
 
+#-----------------------------------------------------------------------------
+# ESG regional grid
+#-----------------------------------------------------------------------------
+
+TEST3=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J esg.regional \
+      --partition=xjet -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST2 ./esg.regional.sh)
+
 #-----------------------------------------------------------------------------
 # Create summary log.
 #-----------------------------------------------------------------------------
 
 sbatch --partition=xjet --nodes=1  -t 0:01:00 -A $PROJECT_CODE -J grid_summary -o $LOG_FILE -e $LOG_FILE \
-       --open-mode=append -q $QUEUE -d afterok:$TEST2 << EOF
+       --open-mode=append -q $QUEUE -d afterok:$TEST3 << EOF
 #!/bin/bash
 grep -a '<<<' $LOG_FILE  > $SUM_FILE
 EOF
diff --git a/reg_tests/grid_gen/driver.orion.sh b/reg_tests/grid_gen/driver.orion.sh
index 6e128f1df..01c812af4 100755
--- a/reg_tests/grid_gen/driver.orion.sh
+++ b/reg_tests/grid_gen/driver.orion.sh
@@ -56,18 +56,25 @@ TEST1=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:15:00 -A $PROJECT_
       -o $LOG_FILE -e $LOG_FILE ./c96.uniform.sh)
 
 #-----------------------------------------------------------------------------
-# C96 regional grid
+# GFDL regional grid
 #-----------------------------------------------------------------------------
 
 TEST2=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J gfdl.regional \
       --open-mode=append -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST1 ./gfdl.regional.sh)
 
+#-----------------------------------------------------------------------------
+# ESG regional grid
+#-----------------------------------------------------------------------------
+
+TEST3=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:10:00 -A $PROJECT_CODE -q $QUEUE -J esg.regional \
+      --open-mode=append -o $LOG_FILE -e $LOG_FILE -d afterok:$TEST2 ./esg.regional.sh)
+
 #-----------------------------------------------------------------------------
 # Create summary log.
 #-----------------------------------------------------------------------------
 
 sbatch --nodes=1 -t 0:01:00 -A $PROJECT_CODE -J grid_summary -o $LOG_FILE -e $LOG_FILE \
-       --open-mode=append -q $QUEUE -d afterok:$TEST2 << EOF
+       --open-mode=append -q $QUEUE -d afterok:$TEST3 << EOF
 #!/bin/bash
 grep -a '<<<' $LOG_FILE  > $SUM_FILE
 EOF
diff --git a/reg_tests/grid_gen/esg.regional.sh b/reg_tests/grid_gen/esg.regional.sh
new file mode 100755
index 000000000..d88a260dc
--- /dev/null
+++ b/reg_tests/grid_gen/esg.regional.sh
@@ -0,0 +1,68 @@
+#!/bin/bash
+
+#-----------------------------------------------------------------------
+# Create a regional esg grid.  Compare output to a set
+# of baseline files using the 'nccmp' utility.  This script is
+# run by the machine specific driver script.
+#-----------------------------------------------------------------------
+
+set -x
+
+export TEMP_DIR=${WORK_DIR}/esg.regional.work
+export out_dir=${WORK_DIR}/esg.regional
+
+export gtype=regional_esg
+export target_lon=-97.5      # Center longitude of the highest resolution tile
+export target_lat=35.5       # Center latitude of the highest resolution tile
+export idim=1301             # Dimension of grid in 'i' direction
+export jdim=600              # Dimension of grid in 'j' direction
+export delx=0.0145           # Grid spacing in degrees in 'i' direction
+export dely=0.0145           # Grid spacing in degrees in 'j' direction
+export halo=3
+
+NCCMP=${NCCMP:-$(which nccmp)}
+
+#-----------------------------------------------------------------------
+# Start script.
+#-----------------------------------------------------------------------
+
+echo "Starting at: " `date`
+
+$home_dir/ush/fv3gfs_driver_grid.sh
+
+iret=$?
+if [ $iret -ne 0 ]; then
+  set +x
+  echo "<<< ESG REGIONAL TEST FAILED. <<<"
+  exit $iret
+fi
+
+echo "Ending at: " `date`
+
+#-----------------------------------------------------------------------------
+# Compare output to baseline set of data.
+#-----------------------------------------------------------------------------
+
+cd $out_dir/C3113
+
+test_failed=0
+for files in *tile*.nc ./fix_sfc/*tile*.nc
+do
+  if [ -f $files ]; then
+    echo CHECK $files
+    $NCCMP -dmfqS $files $HOMEreg/esg.regional/$files
+    iret=$?
+    if [ $iret -ne 0 ]; then
+      test_failed=1
+    fi
+  fi
+done
+
+set +x
+if [ $test_failed -ne 0 ]; then
+  echo "<<< ESG REGIONAL TEST FAILED. >>>"
+else
+  echo "<<< ESG REGIONAL TEST PASSED. >>>"
+fi
+
+exit 0
diff --git a/sorc/grid_tools.fd/filter_topo.fd/filter_topo.F90 b/sorc/grid_tools.fd/filter_topo.fd/filter_topo.F90
index 840eda761..ff21ffc3e 100644
--- a/sorc/grid_tools.fd/filter_topo.fd/filter_topo.F90
+++ b/sorc/grid_tools.fd/filter_topo.fd/filter_topo.F90
@@ -706,27 +706,17 @@ subroutine read_grid_file(regional)
           dx(i,j,t) = great_circle_dist( g2, g1, radius )
        enddo ; enddo
     enddo
-    if( stretch_fac /= 1 ) then
-       do t = 1, ntiles
-          do j = js, je
-             do i = is, ie+1
-                g1(1) = geolon_c(i,j,  t)
-                g1(2) = geolat_c(i,j,  t)
-                g2(1) = geolon_c(i,j+1,t)
-                g2(2) = geolat_c(i,j+1,t)
-                dy(i,j,t) = great_circle_dist( g2, g1, radius )
-             enddo
-          enddo
-       enddo
-    else
-       do t = 1, ntiles
-          do j = js, je
-             do i = is, ie+1
-                dy(i,j,t) = dx(j,i,t)
-             enddo
+    do t = 1, ntiles
+       do j = js, je
+          do i = is, ie+1
+             g1(1) = geolon_c(i,j,  t)
+             g1(2) = geolat_c(i,j,  t)
+             g2(1) = geolon_c(i,j+1,t)
+             g2(2) = geolat_c(i,j+1,t)
+             dy(i,j,t) = great_circle_dist( g2, g1, radius )
           enddo
        enddo
-    endif
+    enddo
 
     if( .not. regional ) then
       !--- make sure it is consitent between tiles. The following maybe not necessary.
diff --git a/ush/fv3gfs_filter_topo.sh b/ush/fv3gfs_filter_topo.sh
index 06f537701..403af6cce 100755
--- a/ush/fv3gfs_filter_topo.sh
+++ b/ush/fv3gfs_filter_topo.sh
@@ -59,8 +59,8 @@ fi
 
 cat > input.nml <<EOF
 &filter_topo_nml
-  grid_file = $mosaic_grid
-  topo_file = $topo_file
+  grid_file = "$mosaic_grid"
+  topo_file = "$topo_file"
   mask_field = "land_frac"
   regional = $regional 
   stretch_fac = $stretch