diff --git a/active-crust/gmm-tree.json b/active-crust/gmm-tree.json
index 371d5e09e8f3d5723566190bb84ecd1b416e5a3f..6a94f6772c602f54a4cfd1603e0a213c4dec4091 100644
--- a/active-crust/gmm-tree.json
+++ b/active-crust/gmm-tree.json
@@ -1,10 +1,6 @@
 [
-  { "id": "ASK_14_BASIN", "weight": 0.1875 },
-  { "id": "ASK_14_CYBERSHAKE", "weight": 0.0625 },
-  { "id": "BSSA_14_BASIN", "weight": 0.1875 },
-  { "id": "BSSA_14_CYBERSHAKE", "weight": 0.0625 },
-  { "id": "CB_14_BASIN", "weight": 0.1875 },
-  { "id": "CB_14_CYBERSHAKE", "weight": 0.0625 },
-  { "id": "CY_14_BASIN", "weight": 0.1875 },
-  { "id": "CY_14_CYBERSHAKE", "weight": 0.0625 }
+  { "id": "ASK_14_BASIN", "weight": 0.25 },
+  { "id": "BSSA_14_BASIN", "weight": 0.25 },
+  { "id": "CB_14_BASIN", "weight": 0.25 },
+  { "id": "CY_14_BASIN", "weight": 0.25 }
 ]
diff --git a/site-data/gmm-region/bay-area-alt-basin.geojson b/site-data/gmm-region/bay-area-alt-basin.geojson
new file mode 100644
index 0000000000000000000000000000000000000000..6fa4f41ee4f10475220fb110a07dbccbbd9642fe
--- /dev/null
+++ b/site-data/gmm-region/bay-area-alt-basin.geojson
@@ -0,0 +1,36 @@
+{
+  "type": "Feature",
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [[
+      [-122.25, 38.63],
+      [-122.81, 38.80],
+      [-123.50, 38.60],
+      [-123.17, 38.05],
+      [-122.72, 37.54],
+      [-122.23, 36.85],
+      [-121.48, 36.98],
+      [-121.34, 37.15],
+      [-121.53, 37.39],
+      [-122.00, 38.19],
+      [-122.25, 38.63]
+    ]]
+  },
+  "properties": {
+    "name": "San Francisco Bay Area: Native basin models",
+    "gmm-trees": {
+      "active-crust": {
+        "all": [
+          { "id": "ASK_14", "weight": 0.125 },
+          { "id": "BSSA_14", "weight": 0.125 },
+          { "id": "CB_14", "weight": 0.125 },
+          { "id": "CY_14", "weight": 0.125 },
+          { "id": "ASK_14_BASIN", "weight": 0.125 },
+          { "id": "BSSA_14_BASIN", "weight": 0.125 },
+          { "id": "CB_14_BASIN", "weight": 0.125 },
+          { "id": "CY_14_BASIN", "weight": 0.125 }
+        ] 
+      }
+    }
+  }
+}
diff --git a/site-data/gmm-region/coastal-plain.geojson b/site-data/gmm-region/coastal-plain.geojson
new file mode 100644
index 0000000000000000000000000000000000000000..f7e2b16776c0124a110aca73ca7dfcb93ad72352
--- /dev/null
+++ b/site-data/gmm-region/coastal-plain.geojson
@@ -0,0 +1,41 @@
+{
+  "type": "Feature",
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [[
+      [-100.5, 24.2],
+      [-85.0, 24.2],
+      [-81.5, 24.2],
+      [-72.5, 24.2],
+      [-66.5, 43.5],
+      [-70.0, 43.5],
+      [-78.0, 39.0],
+      [-78.0, 36.5],
+      [-85.0, 33.0],
+      [-87.5, 34.5],
+      [-87.5, 37.5],
+      [-90.0, 37.5],
+      [-93.5, 34.5],
+      [-97.5, 34.5],
+      [-99.0, 33.0],
+      [-102.5, 33.0],
+      [-104.5, 30.0],
+      [-100.5, 24.2]
+    ]]
+  },
+  "properties": {
+    "name": "Coastal Plain CPA region",
+    "gmm-trees": {
+      "stable-crust": {
+        "all": [
+          { "id": "NGA_EAST_2023", "weight": 0.1667 },
+          { "id": "NGA_EAST_2023_CPA", "weight": 0.1667 },
+          { "id": "NGA_EAST_2023_ADJUSTED", "weight": 0.3333 },
+          { "id": "NGA_EAST_SEEDS_2023", "weight": 0.0833 },
+          { "id": "NGA_EAST_SEEDS_2023_CPA", "weight": 0.0833 },
+          { "id": "NGA_EAST_SEEDS_2023_ADJUSTED", "weight": 0.1667 }
+        ]
+      }
+    }
+  }
+}
diff --git a/site-data/gmm-region/los-angeles-cybershake.geojson b/site-data/gmm-region/los-angeles-cybershake.geojson
new file mode 100644
index 0000000000000000000000000000000000000000..cf2446059b8199be2c48509657d2409cf6e48ca5
--- /dev/null
+++ b/site-data/gmm-region/los-angeles-cybershake.geojson
@@ -0,0 +1,41 @@
+{
+  "type": "Feature",
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [[
+      [-119.66000, 34.28000],
+      [-119.97172, 34.43575],
+      [-119.76298, 34.51493],
+      [-119.39952, 34.70065],
+      [-119.19960, 34.79709],
+      [-118.64526, 34.70718],
+      [-117.98979, 34.45032],
+      [-117.74823, 34.11186],
+      [-117.49204, 33.91388],
+      [-117.39105, 33.26888],
+      [-118.17976, 33.49368],
+      [-119.66000, 34.28000]
+    ]]
+  },
+  "properties": {
+    "name": "Los Angeles: CyberShake simulations and native basin models",
+    "gmm-trees": {
+      "active-crust": {
+        "all": [
+          { "id": "ASK_14", "weight": 0.125 },
+          { "id": "BSSA_14", "weight": 0.125 },
+          { "id": "CB_14", "weight": 0.125 },
+          { "id": "CY_14", "weight": 0.125 },
+          { "id": "ASK_14_BASIN", "weight": 0.0625 },
+          { "id": "BSSA_14_BASIN", "weight": 0.0625 },
+          { "id": "CB_14_BASIN", "weight": 0.0625 },
+          { "id": "CY_14_BASIN", "weight": 0.0625 },
+          { "id": "ASK_14_CYBERSHAKE", "weight": 0.0625 },
+          { "id": "BSSA_14_CYBERSHAKE", "weight": 0.0625 },
+          { "id": "CB_14_CYBERSHAKE", "weight": 0.0625 },
+          { "id": "CY_14_CYBERSHAKE", "weight": 0.0625 }
+        ]
+      }
+    }
+  }
+}
diff --git a/site-data/gmm-region/seattle-m9.geojson b/site-data/gmm-region/seattle-m9.geojson
new file mode 100644
index 0000000000000000000000000000000000000000..3ea5d34800b6bf3754450fc7ff170559902d78ce
--- /dev/null
+++ b/site-data/gmm-region/seattle-m9.geojson
@@ -0,0 +1,112 @@
+{
+  "type": "Feature",
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [[
+      [-122.81668, 47.600582],
+      [-122.82232, 47.622847],
+      [-122.83142, 47.636651],
+      [-122.84324, 47.652848],
+      [-122.8479, 47.667883],
+      [-122.84724, 47.684156],
+      [-122.83867, 47.710118],
+      [-122.8273, 47.72766],           
+      [-122.82931, 47.743914],
+      [-122.83479, 47.752917],
+      [-122.84657, 47.764891],
+      [-122.8423, 47.779375],
+      [-122.84338, 47.793222],
+      [-122.85433, 47.808814],
+      [-122.85449, 47.820257],
+      [-122.83146, 47.836662],
+      [-122.80478, 47.848869],
+      [-122.77353, 47.853267],
+      [-122.73583, 47.843842],
+      [-122.69643, 47.840438],
+      [-122.65528, 47.840042],
+      [-122.60064, 47.832467],
+      [-122.56478, 47.82419],
+      [-122.52537, 47.817122],
+      [-122.49143, 47.821466],
+      [-122.44762, 47.823425],
+      [-122.41091, 47.816315],
+      [-122.38938, 47.80614],            
+      [-122.36696, 47.793554],
+      [-122.34817, 47.790592],
+      [-122.32763, 47.793053],
+      [-122.29459, 47.799755],
+      [-122.26871, 47.811252],
+      [-122.22404, 47.821573],
+      [-122.18111, 47.819831],
+      [-122.13639, 47.814463],
+      [-122.08541, 47.802459],
+      [-122.04875, 47.79525],
+      [-122.0264, 47.783812],
+      [-122.01031, 47.770562],
+      [-121.97637, 47.741044],
+      [-121.95048, 47.719952],
+      [-121.93712, 47.697053],
+      [-121.91841, 47.674147],
+      [-121.89704, 47.645812],
+      [-121.89173, 47.622909],
+      [-121.8891, 47.600609],
+      [-121.89447, 47.583136],
+      [-121.92209, 47.578333],
+      [-121.94614, 47.580153],
+      [-121.96395, 47.585583],
+      [-121.99246, 47.585588],
+      [-122.03165, 47.577749],
+      [-122.07262, 47.577733],
+      [-122.11805, 47.577098],
+      [-122.16526, 47.580062],
+      [-122.2, 47.579412],
+      [-122.24273, 47.573314],
+      [-122.26765,47.569651],
+      [-122.30598, 47.575596],
+      [-122.33714, 47.572508],
+      [-122.35495, 47.571859],
+      [-122.40489, 47.581964],
+      [-122.42092, 47.581914],
+      [-122.43784, 47.580655],
+      [-122.43791, 47.590298],
+      [-122.46554, 47.592616],
+      [-122.46561, 47.602258],
+      [-122.52451, 47.611684],
+      [-122.57982, 47.617483],
+      [-122.60567, 47.618574],
+      [-122.63595, 47.615421],
+      [-122.66531, 47.61106],
+      [-122.69378, 47.606697],
+      [-122.72141, 47.607155],
+      [-122.73565, 47.605872],
+      [-122.77839, 47.602618],
+      [-122.80421, 47.60126], 
+      [-122.81667, 47.59998]
+    ]]
+  },
+  "properties": {
+    "name": "Seattle: Kuehn Seattle basin and M9 simulations",
+    "gmm-trees": {
+      "subduction": {
+        "interface": [
+          { "id": "AM_09_INTERFACE_BASIN", "weight": 0.0625 },
+          { "id": "AM_09_INTERFACE_BASIN_M9", "weight": 0.0625 },
+          { "id": "ZHAO_06_INTERFACE_BASIN", "weight": 0.0625 },
+          { "id": "ZHAO_06_INTERFACE_BASIN_M9", "weight": 0.0625 },
+          { "id": "AG_20_CASCADIA_INTERFACE_ADJUSTED_BASIN", "weight": 0.25 },
+          { "id": "KBCG_20_CASCADIA_INTERFACE_SEATTLE_BASIN", "weight": 0.125 },
+          { "id": "KBCG_20_CASCADIA_INTERFACE_SEATTLE_BASIN_M9", "weight": 0.125 },
+          { "id": "PSBAH_20_CASCADIA_INTERFACE_BASIN", "weight": 0.125 },
+          { "id": "PSBAH_20_CASCADIA_INTERFACE_BASIN_M9", "weight": 0.125 }
+        ],
+        "slab": [
+          { "id": "ZHAO_06_SLAB_BASIN", "weight": 0.25 },
+          { "id": "AG_20_CASCADIA_SLAB_BASIN", "weight": 0.0825 },
+          { "id": "AG_20_CASCADIA_SLAB_ADJUSTED_BASIN", "weight": 0.1675 },
+          { "id": "KBCG_20_CASCADIA_SLAB_SEATTLE_BASIN", "weight": 0.25 },
+          { "id": "PSBAH_20_CASCADIA_SLAB_BASIN", "weight": 0.25 }
+        ]
+      }
+    }
+  }
+}
diff --git a/stable-crust/gmm-tree.json b/stable-crust/gmm-tree.json
index 397880f45c931cc1b5d70816c598306a98e60ac4..90795a8f8d84df7b8684a80f29e06a3c7c3612e6 100644
--- a/stable-crust/gmm-tree.json
+++ b/stable-crust/gmm-tree.json
@@ -1,6 +1,6 @@
 [
-  { "id": "NGA_EAST_2023", "weight": 0.5 },
-  { "id": "NGA_EAST_2023_CPA", "weight": 0.1667 },
-  { "id": "NGA_EAST_SEEDS_2023", "weight": 0.25 },
-  { "id": "NGA_EAST_SEEDS_2023_CPA", "weight": 0.0833 }
+  { "id": "NGA_EAST_2023", "weight": 0.3333 },
+  { "id": "NGA_EAST_2023_ADJUSTED", "weight": 0.3333 },
+  { "id": "NGA_EAST_SEEDS_2023", "weight": 0.1667 },
+  { "id": "NGA_EAST_SEEDS_2023_ADJUSTED", "weight": 0.1667 }
 ]
diff --git a/subduction/interface/gmm-tree.json b/subduction/interface/gmm-tree.json
index 4e9dc8d34afe0e30d92bfcee5ebd84a7efdf5618..0861ecd90d3739832ee1bcb7166e2febb8702931 100644
--- a/subduction/interface/gmm-tree.json
+++ b/subduction/interface/gmm-tree.json
@@ -1,9 +1,7 @@
 [
-  { "id": "AM_09_INTERFACE_BASIN", "weight": 0.08 },
-  { "id": "ZHAO_06_INTERFACE_BASIN", "weight": 0.17 },
+  { "id": "AM_09_INTERFACE_BASIN", "weight": 0.125 },
+  { "id": "ZHAO_06_INTERFACE_BASIN", "weight": 0.125 },
   { "id": "AG_20_CASCADIA_INTERFACE_ADJUSTED_BASIN", "weight": 0.25 },
-  { "id": "KBCG_20_CASCADIA_INTERFACE_BASIN", "weight": 0.125 },
-  { "id": "KBCG_20_CASCADIA_INTERFACE_SEATTLE_M9", "weight": 0.125 },
-  { "id": "PSBAH_20_CASCADIA_INTERFACE_BASIN", "weight": 0.125 },
-  { "id": "PSBAH_20_CASCADIA_INTERFACE_M9", "weight": 0.125 }
+  { "id": "KBCG_20_CASCADIA_INTERFACE_BASIN", "weight": 0.25 },
+  { "id": "PSBAH_20_CASCADIA_INTERFACE_BASIN", "weight": 0.25 }
 ]
diff --git a/subduction/slab/gmm-tree.json b/subduction/slab/gmm-tree.json
index 445a5e9e9ed9563576463ac26d623806e6a1b418..b48e26968cac57c3340582b25ca25458a75da540 100644
--- a/subduction/slab/gmm-tree.json
+++ b/subduction/slab/gmm-tree.json
@@ -2,6 +2,6 @@
   { "id": "ZHAO_06_SLAB_BASIN", "weight": 0.25 },
   { "id": "AG_20_CASCADIA_SLAB_BASIN", "weight": 0.0825 },
   { "id": "AG_20_CASCADIA_SLAB_ADJUSTED_BASIN", "weight": 0.1675 },
-  { "id": "KBCG_20_CASCADIA_SLAB_SEATTLE", "weight": 0.25 },
+  { "id": "KBCG_20_CASCADIA_SLAB_BASIN", "weight": 0.25 },
   { "id": "PSBAH_20_CASCADIA_SLAB_BASIN", "weight": 0.25 }
 ]