diff --git a/macros/plugins/snowflake/create_external_table.sql b/macros/plugins/snowflake/create_external_table.sql
index f48b87a..2839fba 100644
--- a/macros/plugins/snowflake/create_external_table.sql
+++ b/macros/plugins/snowflake/create_external_table.sql
@@ -51,6 +51,9 @@
     {% if external.auto_refresh in (true, false) -%}
       auto_refresh = {{external.auto_refresh}}
     {%- endif %}
+    {% if external.table_format | lower == "delta" %}
+      refresh_on_create = false
+    {% endif %}
     {% if external.pattern -%} pattern = '{{external.pattern}}' {%- endif %}
     {% if external.integration -%} integration = '{{external.integration}}' {%- endif %}
     file_format = {{external.file_format}}
diff --git a/macros/plugins/snowflake/refresh_external_table.sql b/macros/plugins/snowflake/refresh_external_table.sql
index 8f28ae5..accf182 100644
--- a/macros/plugins/snowflake/refresh_external_table.sql
+++ b/macros/plugins/snowflake/refresh_external_table.sql
@@ -5,8 +5,9 @@
     
     {% set auto_refresh = external.get('auto_refresh', false) %}
     {% set partitions = external.get('partitions', none) %}
+    {% set delta_format = (external.table_format | lower == "delta") %}
     
-    {% set manual_refresh = (partitions and not auto_refresh) %}
+    {% set manual_refresh = not auto_refresh %}
     
     {% if manual_refresh %}