diff --git a/api-ref/source/v2/parameters.yaml b/api-ref/source/v2/parameters.yaml
index 61c2d2e7668..b86824248e8 100644
--- a/api-ref/source/v2/parameters.yaml
+++ b/api-ref/source/v2/parameters.yaml
@@ -19,6 +19,12 @@ backup_id:
   in: path
   required: false
   type: string
+cascade:
+  description: |
+    Remove any snapshots along with the volume. Default=False.
+  in: path
+  required: false
+  type: boolean
 cgsnapshot_id_1:
   description: |
     The ID of the consistency group snapshot.
diff --git a/api-ref/source/v2/volumes-v2-volumes.inc b/api-ref/source/v2/volumes-v2-volumes.inc
index 8c94fb0b1f4..6e23731da61 100644
--- a/api-ref/source/v2/volumes-v2-volumes.inc
+++ b/api-ref/source/v2/volumes-v2-volumes.inc
@@ -454,6 +454,7 @@ Request
 
    - tenant_id: tenant_id
    - volume_id: volume_id
+   - cascade: cascade
 
 
 
diff --git a/api-ref/source/v3/parameters.yaml b/api-ref/source/v3/parameters.yaml
index 06fcc4c513e..fd666f4be98 100644
--- a/api-ref/source/v3/parameters.yaml
+++ b/api-ref/source/v3/parameters.yaml
@@ -31,6 +31,12 @@ backup_id:
   in: path
   required: false
   type: string
+cascade:
+  description: |
+    Remove any snapshots along with the volume. Default=False.
+  in: path
+  required: false
+  type: boolean
 cgsnapshot_id_1:
   description: |
     The ID of the consistency group snapshot.
diff --git a/api-ref/source/v3/volumes-v3-volumes.inc b/api-ref/source/v3/volumes-v3-volumes.inc
index 6ea8c6fb676..2f516df00e0 100644
--- a/api-ref/source/v3/volumes-v3-volumes.inc
+++ b/api-ref/source/v3/volumes-v3-volumes.inc
@@ -458,6 +458,7 @@ Request
 
    - project_id: project_id_path
    - volume_id: volume_id
+   - cascade: cascade