diff --git a/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26000.json b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26000.json
new file mode 100644
index 00000000..1d22b6f7
--- /dev/null
+++ b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26000.json
@@ -0,0 +1,37 @@
+{
+    "11725": {
+        "name": "California",
+        "code": "US-CA",
+        "subdivisionType": "adm1"
+    },
+    "11726": {
+        "name": "Colorado",
+        "code": "US-CO",
+        "subdivisionType": "adm1"
+    },
+    "12516": {
+        "name": "Pacific Northwest",
+        "code": "HUC17",
+        "subdivisionType": "huc2"
+    },
+    "12517": {
+        "name": "California",
+        "code": "HUC18",
+        "subdivisionType": "huc2"
+    },
+    "12807": {
+        "name": "Lower Columbia",
+        "code": "HUC1708",
+        "subdivisionType": "huc4"
+    },
+    "12809": {
+        "name": "Oregon-Washington Coastal",
+        "code": "HUC1710",
+        "subdivisionType": "huc4"
+    },
+    "12815": {
+        "name": "San Joaquin",
+        "code": "HUC1804",
+        "subdivisionType": "huc4"
+    }
+}
\ No newline at end of file
diff --git a/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26101.json b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26101.json
new file mode 100644
index 00000000..0d17c1b0
--- /dev/null
+++ b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/regions_26101.json
@@ -0,0 +1,27 @@
+{
+    "3701": {
+        "name": "Alberta",
+        "code": "CA-AB",
+        "subdivisionType": "adm1"
+    },
+    "24989": {
+        "name": "Catchment HYD78268",
+        "code": "HYD78268",
+        "subdivisionType": "hydro5"
+    },
+    "17376": {
+        "name": "Catchment HYD7821",
+        "code": "HYD7821",
+        "subdivisionType": "hydro4"
+    },
+    "17381": {
+        "name": "Catchment HYD7826",
+        "code": "HYD7826",
+        "subdivisionType": "hydro4"
+    },
+    "15269": {
+        "name": "Catchment HYD782",
+        "code": "HYD782",
+        "subdivisionType": "hydro3"
+    }
+}
\ No newline at end of file
diff --git a/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/root_regions.json b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/root_regions.json
new file mode 100644
index 00000000..d917771e
--- /dev/null
+++ b/doc/interfaces/supercomputer_data/drafts/20231009_region_hierarchy/root_regions.json
@@ -0,0 +1,37 @@
+{
+    "26000": {
+        "name": "Western United States",
+        "code": "USwest",
+        "subdivisionType": "adm0group",
+        "EPSG": 3857,
+        "subdivisionListAndMetadataRelativePath": "subdivisionlist/subdivisionlist_26000.json"
+    },
+    "26002": {
+        "name": "ASHimalayas",
+        "code": "ASHimalayas",
+        "subdivisionType": "adm0group",
+        "EPSG": 0,
+        "subdivisionListAndMetadataRelativePath": "subdivisionlist/subdivisionlist_26002.json"
+    },
+    "26004": {
+        "name": "AMAndes",
+        "code": "AMAndes",
+        "subdivisionType": "adm0group",
+        "EPSG": 0,
+        "subdivisionListAndMetadataRelativePath": "subdivisionlist/subdivisionlist_26004.json"
+    },
+    "26100": {
+        "name": "USAlaskaWAleutian",
+        "code": "USAlaskaWAleutian",
+        "subdivisionType": "adm1part",
+        "EPSG": 0,
+        "subdivisionListAndMetadataRelativePath": "subdivisionlist/subdivisionlist_26100.json"
+    },
+    "26101": {
+        "name": "AMCanadaW",
+        "code": "AMCanadaW",
+        "subdivisionType": "adm0part",
+        "EPSG": 0,
+        "subdivisionListAndMetadataRelativePath": "subdivisionlist/subdivisionlist_26101.json"
+    }
+}
\ No newline at end of file