diff --git a/E3SM-Project b/E3SM-Project
index de075c76ac..c9a0d200a5 160000
--- a/E3SM-Project
+++ b/E3SM-Project
@@ -1 +1 @@
-Subproject commit de075c76ac53caa701952aa322777b7aca5c9758
+Subproject commit c9a0d200a5b0db964e7d8b862427c9a336d5e0f4
diff --git a/compass/ocean/suites/wetdry.txt b/compass/ocean/suites/wetdry.txt
index c286926b91..31bdf04734 100644
--- a/compass/ocean/suites/wetdry.txt
+++ b/compass/ocean/suites/wetdry.txt
@@ -1,9 +1,15 @@
 ocean/drying_slope/250m/sigma/default
+ocean/drying_slope/250m/sigma/ramp
 ocean/drying_slope/250m/single_layer/default
+ocean/drying_slope/250m/single_layer/ramp
 ocean/drying_slope/1km/sigma/default
+ocean/drying_slope/1km/sigma/ramp
 ocean/drying_slope/1km/single_layer/default
+ocean/drying_slope/1km/single_layer/ramp
 ocean/dam_break/40cm/default
+ocean/dam_break/40cm/ramp
 ocean/dam_break/120cm/default
+ocean/dam_break/120cm/ramp
 ocean/isomip_plus/planar/5km/sigma/thin_film_drying_Ocean0
 ocean/isomip_plus/planar/5km/sigma/thin_film_wetting_Ocean0
 ocean/isomip_plus/planar/5km/single_layer/thin_film_tidal_forcing_Ocean0
diff --git a/compass/ocean/tests/dam_break/__init__.py b/compass/ocean/tests/dam_break/__init__.py
index 05ed6d82b8..c7b365f7fa 100644
--- a/compass/ocean/tests/dam_break/__init__.py
+++ b/compass/ocean/tests/dam_break/__init__.py
@@ -1,5 +1,6 @@
-from compass.testgroup import TestGroup
 from compass.ocean.tests.dam_break.default import Default
+from compass.ocean.tests.dam_break.ramp import Ramp
+from compass.testgroup import TestGroup
 
 
 class DamBreak(TestGroup):
@@ -15,6 +16,7 @@ def __init__(self, mpas_core):
         super().__init__(mpas_core=mpas_core, name='dam_break')
 
         for resolution in [0.04, 0.12]:
-            for coord_type in ['sigma']:
-                self.add_test_case(
-                    Default(test_group=self, resolution=resolution))
+            self.add_test_case(
+                Default(test_group=self, resolution=resolution))
+            self.add_test_case(
+                Ramp(test_group=self, resolution=resolution))
diff --git a/compass/ocean/tests/dam_break/ramp/__init__.py b/compass/ocean/tests/dam_break/ramp/__init__.py
new file mode 100644
index 0000000000..d72b9234fc
--- /dev/null
+++ b/compass/ocean/tests/dam_break/ramp/__init__.py
@@ -0,0 +1,82 @@
+from math import floor
+
+from compass.ocean.tests.dam_break.forward import Forward
+from compass.ocean.tests.dam_break.initial_state import InitialState
+from compass.ocean.tests.dam_break.viz import Viz
+from compass.testcase import TestCase
+from compass.validate import compare_variables
+
+
+class Ramp(TestCase):
+    """
+    The default dam_break test case
+
+    Attributes
+    ----------
+    resolution : float
+        The resolution of the test case in km
+
+    """
+
+    def __init__(self, test_group, resolution):
+        """
+        Create the test case
+
+        Parameters
+        ----------
+        test_group : compass.ocean.tests.dam_break.DamBreak
+            The test group that this test case belongs to
+
+        resolution : float
+            The resolution of the test case in m
+
+        """
+        name = 'ramp'
+
+        self.resolution = resolution
+        if resolution < 1.:
+            res_name = f'{int(resolution*1e3)}cm'
+        else:
+            res_name = f'{int(resolution)}m'
+        min_tasks = int(40 / (resolution / 0.04)**2)
+        ntasks = 10 * min_tasks
+        subdir = f'{res_name}/{name}'
+        super().__init__(test_group=test_group, name=name,
+                         subdir=subdir)
+
+        self.add_step(InitialState(test_case=self))
+        forward_step = Forward(test_case=self, resolution=resolution,
+                               ntasks=ntasks, min_tasks=min_tasks,
+                               openmp_threads=1)
+        forward_step.add_namelist_options({'config_zero_drying_velocity_ramp':
+                                           ".true."})
+        self.add_step(forward_step)
+        self.add_step(Viz(test_case=self))
+
+    def configure(self):
+        """
+        Modify the configuration options for this test case.
+        """
+
+        resolution = self.resolution
+        config = self.config
+        dc = resolution  # cell width in m
+        dx = 13          # width of the domain in m
+        dy = 28          # length of the domain in m
+        nx = round(dx / dc)
+        ny = int(2 * floor(dy / (2 * dc)))  # guarantee that ny is even
+
+        config.set('dam_break', 'nx', f'{nx}', comment='the number of '
+                   'mesh cells in the x direction')
+        config.set('dam_break', 'ny', f'{ny}', comment='the number of '
+                   'mesh cells in the y direction')
+        config.set('dam_break', 'dc', f'{dc}', comment='the distance '
+                   'between adjacent cell centers')
+
+    def validate(self):
+        """
+        Validate variables against a baseline
+        """
+        variables = ['layerThickness', 'normalVelocity', 'ssh']
+        compare_variables(test_case=self, variables=variables,
+                          filename1='forward/output.nc')
diff --git a/compass/ocean/tests/drying_slope/__init__.py b/compass/ocean/tests/drying_slope/__init__.py
index 56583b2ff8..044a3fb8a0 100644
--- a/compass/ocean/tests/drying_slope/__init__.py
+++ b/compass/ocean/tests/drying_slope/__init__.py
@@ -1,5 +1,6 @@
-from compass.testgroup import TestGroup
 from compass.ocean.tests.drying_slope.default import Default
+from compass.ocean.tests.drying_slope.ramp import Ramp
+from compass.testgroup import TestGroup
 
 
 class DryingSlope(TestGroup):
@@ -14,8 +15,11 @@ def __init__(self, mpas_core):
         """
         super().__init__(mpas_core=mpas_core, name='drying_slope')
 
-        for resolution in [0.25, 1]:
+        for resolution in [0.25, 1.]:
             for coord_type in ['sigma', 'single_layer']:
                 self.add_test_case(
                     Default(test_group=self, resolution=resolution,
                             coord_type=coord_type))
+                self.add_test_case(
+                    Ramp(test_group=self, resolution=resolution,
+                         coord_type=coord_type))
diff --git a/compass/ocean/tests/drying_slope/forward.py b/compass/ocean/tests/drying_slope/forward.py
index f1a31b279c..64bd2e20ec 100644
--- a/compass/ocean/tests/drying_slope/forward.py
+++ b/compass/ocean/tests/drying_slope/forward.py
@@ -42,6 +42,9 @@ def __init__(self, test_case, resolution, name='forward', subdir=None,
         damping_coeff: float, optional
             the value of the rayleigh damping coefficient
 
+        coord_type: string, optional
+            the coordinate type
+
         """
         if min_tasks is None:
             min_tasks = ntasks
diff --git a/compass/ocean/tests/drying_slope/ramp/__init__.py b/compass/ocean/tests/drying_slope/ramp/__init__.py
new file mode 100644
index 0000000000..0c3ee1ea71
--- /dev/null
+++ b/compass/ocean/tests/drying_slope/ramp/__init__.py
@@ -0,0 +1,99 @@
+from compass.ocean.tests.drying_slope.forward import Forward
+from compass.ocean.tests.drying_slope.initial_state import InitialState
+from compass.ocean.tests.drying_slope.viz import Viz
+from compass.testcase import TestCase
+from compass.validate import compare_variables
+
+
+class Ramp(TestCase):
+    """
+    The default drying_slope test case
+
+    Attributes
+    ----------
+    resolution : float
+        The resolution of the test case in km
+
+    coord_type : str
+        The type of vertical coordinate (``sigma``, ``single_layer``, etc.)
+    """
+
+    def __init__(self, test_group, resolution, coord_type):
+        """
+        Create the test case
+
+        Parameters
+        ----------
+        test_group : compass.ocean.tests.drying_slope.DryingSlope
+            The test group that this test case belongs to
+
+        resolution : float
+            The resolution of the test case in km
+
+        coord_type : str
+            The type of vertical coordinate (``sigma``, ``single_layer``)
+        """
+        name = 'ramp'
+
+        self.resolution = resolution
+        self.coord_type = coord_type
+        if resolution < 1.:
+            res_name = f'{int(resolution*1e3)}m'
+        else:
+            res_name = f'{int(resolution)}km'
+        subdir = f'{res_name}/{coord_type}/{name}'
+        super().__init__(test_group=test_group, name=name,
+                         subdir=subdir)
+        self.add_step(InitialState(test_case=self, coord_type=coord_type))
+        if coord_type == 'single_layer':
+            forward_step = Forward(test_case=self, resolution=resolution,
+                                   ntasks=4, openmp_threads=1,
+                                   coord_type=coord_type)
+            damping_coeffs = None
+            forward_step.add_namelist_options(
+                {'config_zero_drying_velocity_ramp': ".true."})
+            self.add_step(forward_step)
+        else:
+            damping_coeffs = [0.0025, 0.01]
+            for damping_coeff in damping_coeffs:
+                forward_step = Forward(test_case=self, resolution=resolution,
+                                       ntasks=4, openmp_threads=1,
+                                       damping_coeff=damping_coeff,
+                                       coord_type=coord_type)
+                forward_step.add_namelist_options(
+                    {'config_zero_drying_velocity_ramp': ".true."})
+                self.add_step(forward_step)
+        self.damping_coeffs = damping_coeffs
+        self.add_step(Viz(test_case=self, damping_coeffs=damping_coeffs))
+
+    def configure(self):
+        """
+        Modify the configuration options for this test case.
+        """
+
+        resolution = self.resolution
+        config = self.config
+        ny = round(28 / resolution)
+        if resolution < 1.:
+            ny += 2
+        dc = 1e3 * resolution
+
+        config.set('drying_slope', 'ny', f'{ny}', comment='the number of '
+                   'mesh cells in the y direction')
+        config.set('drying_slope', 'dc', f'{dc}', comment='the distance '
+                   'between adjacent cell centers')
+
+    def validate(self):
+        """
+        Validate variables against a baseline
+        """
+        damping_coeffs = self.damping_coeffs
+        variables = ['layerThickness', 'normalVelocity']
+        if damping_coeffs is not None:
+            for damping_coeff in damping_coeffs:
+                compare_variables(test_case=self, variables=variables,
+                                  filename1=f'forward_{damping_coeff}/'
+                                            'output.nc')
+        else:
+            compare_variables(test_case=self, variables=variables,
+                              filename1='forward/output.nc')
diff --git a/compass/ocean/tests/drying_slope/streams.forward b/compass/ocean/tests/drying_slope/streams.forward
index 49b6475ce2..a9c861ff35 100644
--- a/compass/ocean/tests/drying_slope/streams.forward
+++ b/compass/ocean/tests/drying_slope/streams.forward
@@ -29,7 +29,6 @@
         clobber_mode="truncate">
 
     <stream name="mesh"/>
-    <var_struct name="tracers"/>
     <var name="layerThickness"/>
     <var name="ssh"/>
     <var name="normalVelocity"/>
diff --git a/docs/developers_guide/ocean/test_groups/dam_break.rst b/docs/developers_guide/ocean/test_groups/dam_break.rst
index 194980794e..de20692964 100644
--- a/docs/developers_guide/ocean/test_groups/dam_break.rst
+++ b/docs/developers_guide/ocean/test_groups/dam_break.rst
@@ -67,3 +67,13 @@ test performs one 10-minute run on 40 cores. It doesn't contain any
 is configured to have a 1 m by 1 m dammed region matching the experimental
 setup and a ~12 m by ~12 m flood plain to minimize reflections off the
 boundaries.
+
+
+.. _dev_ocean_dam_break_ramp:
+
+ramp
+----
+
+The :py:class:`compass.ocean.tests.dam_break.ramp.Ramp` is identical to the
+default class except it sets ``ramp`` to ``True`` for the forward step to enable
+the ramp feature for wetting and drying.
diff --git a/docs/developers_guide/ocean/test_groups/drying_slope.rst b/docs/developers_guide/ocean/test_groups/drying_slope.rst
index d4267dd523..de438a5888 100644
--- a/docs/developers_guide/ocean/test_groups/drying_slope.rst
+++ b/docs/developers_guide/ocean/test_groups/drying_slope.rst
@@ -80,3 +80,13 @@ types are supported. For ``sigma`` coordinates, this case is hard-coded to run
 two cases at different values of ``config_Rayleigh_damping_coeff``, 0.0025 and
 0.01, for which there is comparison data. The ``single_layer`` case runs at one
 value of the explicit bottom drag coefficient. 
+
+
+.. _dev_ocean_drying_slope_ramp:
+
+ramp
+----
+
+The :py:class:`compass.ocean.tests.drying_slope.ramp.Ramp` is identical to the
+default class except it sets ``ramp`` to ``True`` for the forward step to enable
+the ramp feature for wetting and drying.
diff --git a/docs/users_guide/ocean/test_groups/dam_break.rst b/docs/users_guide/ocean/test_groups/dam_break.rst
index 3566890f4e..5c9ace7152 100644
--- a/docs/users_guide/ocean/test_groups/dam_break.rst
+++ b/docs/users_guide/ocean/test_groups/dam_break.rst
@@ -40,6 +40,14 @@ The config options for this test case are:
 default
 -------
 
-``ocean/dam_break/40cm/default`` is the default version of the dam break
+``ocean/dam_break/${RES}/default`` is the default version of the dam break
 test case for validation of sea surface height through visual inspection
-against experimental data and ROMS solutions.
+against experimental data and ROMS solutions. ``RES`` is either 40cm or 120cm.
+
+ramp
+----
+
+``ocean/dam_break/${RES}/ramp`` is identical to the ``default`` test except
+the factor that scales velocities and velocity tendencies is ramped over a
+given layer thickness range rather than a binary switch at the minimum
+thickness. ``RES`` is either 40cm or 120cm.
diff --git a/docs/users_guide/ocean/test_groups/drying_slope.rst b/docs/users_guide/ocean/test_groups/drying_slope.rst
index 4d3f4ab399..24af0e3922 100644
--- a/docs/users_guide/ocean/test_groups/drying_slope.rst
+++ b/docs/users_guide/ocean/test_groups/drying_slope.rst
@@ -81,7 +81,16 @@ All units are mks.
 default
 -------
 
-``ocean/drying_slope/1km/default`` is the default version of the drying slope
-test case for two short (12h) test runs with two different drag coefficients
-and validation of sea surface height through visual inspection against analytic
-and ROMS solutions.
+``ocean/drying_slope/${RES}/${COORD}/default`` is the default version of the
+drying slope test case for two short (12h) test runs with two different drag
+coefficients and validation of sea surface height through visual inspection
+against analytic and ROMS solutions. ``RES`` is either 250m or 1km. ``COORD`` is either ``single_layer`` or ``sigma``.
+
+ramp
+----
+
+``ocean/drying_slope/${RES}/${COORD}/ramp`` is identical to the ``default``
+test except the factor that scales velocities and velocity tendencies is
+ramped over a given layer thickness range rather than a binary switch at the
+minimum thickness. ``RES`` is either 250m or 1km. ``COORD`` is either
+``single_layer`` or ``sigma``.