diff --git a/crates/benilla-assets/src/shaders/enhanced_water.wgsl b/crates/benilla-assets/src/shaders/enhanced_water.wgsl
index 5cd1bd25..a8906e63 100644
--- a/crates/benilla-assets/src/shaders/enhanced_water.wgsl
+++ b/crates/benilla-assets/src/shaders/enhanced_water.wgsl
@@ -91,6 +91,8 @@ fn water_rain_open(world_pos: vec3<f32>) -> f32 {
 struct WaterFragment {
     clip_position: vec4<f32>,
     world_position: vec4<f32>,
+    // MONKEY (reviewfix): world XZ before `water_swell`, so fragment waves share its source domain.
+    source_xz: vec2<f32>,
     // The authored per-vertex swatch depth (UV1.x): ocean byte/255, about 148 yd at 1.0.
     depth: f32,
     // MONKEY (water): an interior WMO pool's authored MOMT diffuse colour; white on other lanes.
@@ -555,7 +557,7 @@ fn enhanced_water(in: WaterFragment, shallow: vec4<f32>, deep: vec4<f32>) -> vec
     }
     let t = water_time(); // WOW_CAPTURE_WATER_T pins the frozen water phase.
     let fog = water_fog(in.world_position.xyz, in.room_fog);
-    let p = in.world_position.xz;
+    let p = in.source_xz;
     let energy = clamp(water.mode.y, 0.0, 1.0);
     let ocean_mesh = water.lane.y > 0.5 && water.lane.x < 0.5;
 
diff --git a/crates/benilla-assets/src/shaders/liquid.wgsl b/crates/benilla-assets/src/shaders/liquid.wgsl
index 53027ebd..93f32ba6 100644
--- a/crates/benilla-assets/src/shaders/liquid.wgsl
+++ b/crates/benilla-assets/src/shaders/liquid.wgsl
@@ -85,6 +85,8 @@ struct LiquidVsOut {
     @location(5) vcolor: vec4<f32>,
     // `MeshTag` bit 30: the room's per-frame interior-fog gate, the reference's `[0xca7f00]`.
     @location(6) @interpolate(flat) room_fog: u32,
+    // MONKEY (reviewfix): the analytic water domain before the ocean's vertex displacement.
+    @location(7) source_xz: vec2<f32>,
 }
 
 // Sun sheen (`secondary`): the Blinn highlight `light_spec.rgb · (N·H)^shininess`.
@@ -147,8 +149,9 @@ fn vertex(in: Vertex) -> LiquidVsOut {
     let world_from_local = mesh_functions::get_world_from_local(in.instance_index);
     out.world_position =
         mesh_functions::mesh_position_local_to_world(world_from_local, vec4<f32>(in.position, 1.0));
+    out.source_xz = out.world_position.xz;
     // MONKEY (enhanced water): ocean Gerstner displacement; zero on Classic/other surfaces.
-    out.world_position += vec4<f32>(water_swell(out.world_position.xz, in.uv_b.x, in.uv_b.y), 0.0);
+    out.world_position += vec4<f32>(water_swell(out.source_xz, in.uv_b.x, in.uv_b.y), 0.0);
     out.clip_position = position_world_to_clip(out.world_position.xyz);
     out.world_normal = mesh_functions::mesh_normal_local_to_world(in.normal, in.instance_index);
     out.uv = in.uv;
@@ -221,7 +224,8 @@ fn fragment(in: LiquidVsOut) -> @location(0) vec4<f32> {
         return enhanced_water(
             // MONKEY (water): the enhanced interior arm consumes the MOMT colour already carried
             // by the reference fragment interface; exterior/ADT vertices supply white.
-            WaterFragment(in.clip_position, in.world_position, in.depth, in.vcolor, in.room_fog),
+            WaterFragment(in.clip_position, in.world_position, in.source_xz, in.depth, in.vcolor,
+                in.room_fog),
             shallow_enhanced, deep_enhanced);
     }