diff --git a/tests/terrain_chunk_generator_validation.gd b/tests/terrain_chunk_generator_validation.gd
index 0576d81..4bbb5a3 100644
--- a/tests/terrain_chunk_generator_validation.gd
+++ b/tests/terrain_chunk_generator_validation.gd
@@ -447,6 +447,7 @@ func _validate_catalog() -> void:
 			and stream_variant.water_inlet_edges == stream.water_inlet_edges
 			and stream_variant.water_outlet_edges == stream.water_outlet_edges
 			and stream_variant.water_surface_size == stream.water_surface_size
+			and stream.water_surface_size.x >= 4.0
 			and stream.water_surface_offset.x < 0.0
 			and stream_variant.water_surface_offset.x > 0.0
 			and is_equal_approx(
@@ -455,7 +456,7 @@ func _validate_catalog() -> void:
 			),
 			(
 				"Both pond-stream visuals must share one combined selection weight "
-				+ "and mirrored water footprints."
+				+ "and waterline-wide mirrored water footprints."
 			),
 		)
 		_check(
diff --git a/world/generation/chunks/definitions/chunk_0003.tres b/world/generation/chunks/definitions/chunk_0003.tres
index f681406..6575013 100644
--- a/world/generation/chunks/definitions/chunk_0003.tres
+++ b/world/generation/chunks/definitions/chunk_0003.tres
@@ -16,5 +16,5 @@ allowed_neighbor_tags = PackedStringArray("grass")
 preferred_neighbor_tags = PackedStringArray("grass")
 water_inlet_edges = 1
 water_outlet_edges = 4
-water_surface_size = Vector2(2.3, 10)
+water_surface_size = Vector2(4.2, 10)
 water_surface_offset = Vector2(-0.315, 0)
diff --git a/world/generation/chunks/definitions/chunk_0016.tres b/world/generation/chunks/definitions/chunk_0016.tres
index 14474e9..ac8bea7 100644
--- a/world/generation/chunks/definitions/chunk_0016.tres
+++ b/world/generation/chunks/definitions/chunk_0016.tres
@@ -16,5 +16,5 @@ allowed_neighbor_tags = PackedStringArray("grass")
 preferred_neighbor_tags = PackedStringArray("grass")
 water_inlet_edges = 1
 water_outlet_edges = 4
-water_surface_size = Vector2(2.3, 10)
+water_surface_size = Vector2(4.2, 10)
 water_surface_offset = Vector2(0.323, 0)