diff --git a/bld/namelist_files/use_cases/1850-2100_SSP1-1.9_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP1-1.9_transient.xml
index 93e5e24372..3b3131c1d0 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP1-1.9_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP1-1.9_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP1-1.9</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP1-2.6_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP1-2.6_transient.xml
index d10ef6d45f..63816b8afa 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP1-2.6_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP1-2.6_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP1-2.6</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP2-4.5_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP2-4.5_transient.xml
index 85859517f1..a3ec547990 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP2-4.5_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP2-4.5_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP2-4.5</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP3-7.0_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP3-7.0_transient.xml
index 317ca3fbcd..78659ebaed 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP3-7.0_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP3-7.0_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP3-7.0</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP4-3.4_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP4-3.4_transient.xml
index 0e42bbd724..5c850d7d94 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP4-3.4_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP4-3.4_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP4-3.4</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP4-6.0_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP4-6.0_transient.xml
index b2b67a4d5b..b27aa2566f 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP4-6.0_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP4-6.0_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP4-6.0</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP5-3.4_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP5-3.4_transient.xml
index e4ae71ca94..7d80771c0d 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP5-3.4_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP5-3.4_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP5-3.4</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/1850-2100_SSP5-8.5_transient.xml b/bld/namelist_files/use_cases/1850-2100_SSP5-8.5_transient.xml
index fbb8af4d10..a9e738fe60 100644
--- a/bld/namelist_files/use_cases/1850-2100_SSP5-8.5_transient.xml
+++ b/bld/namelist_files/use_cases/1850-2100_SSP5-8.5_transient.xml
@@ -12,6 +12,8 @@
 
 <sim_year_range>1850-2100</sim_year_range>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <ssp_rcp>SSP5-8.5</ssp_rcp>
 
 </namelist_defaults>
diff --git a/bld/namelist_files/use_cases/20thC_transient.xml b/bld/namelist_files/use_cases/20thC_transient.xml
index faf0534f34..af0f78134e 100644
--- a/bld/namelist_files/use_cases/20thC_transient.xml
+++ b/bld/namelist_files/use_cases/20thC_transient.xml
@@ -12,6 +12,8 @@
 
 <clm_start_type>arb_ic</clm_start_type>
 
+<ndep_taxmode use_cn=".true." >limit</ndep_taxmode>
+
 <clm_demand >flanduse_timeseries</clm_demand>
 
 <irrigate use_crop=".true." phys="clm5_1"  use_cndv=".false.">.true.</irrigate>