diff --git a/src/engine/InterestManagement/HeightMap.java b/src/engine/InterestManagement/HeightMap.java
index 64400671..6527deb4 100644
--- a/src/engine/InterestManagement/HeightMap.java
+++ b/src/engine/InterestManagement/HeightMap.java
@@ -118,8 +118,8 @@ public class HeightMap {
         int halfExtentsY = (int) Enum.CityBoundsType.ZONE.halfExtents;
         this.zoneLoadID = 0;
         this.seaLevel = 0;
-        this.zone_minBlend = 256;
-        this.zone_maxBlend = 256;
+        this.zone_minBlend = 0;
+        this.zone_maxBlend = 0;
 
         // Cache the full extents to avoid the calculation
 
@@ -246,14 +246,26 @@ public class HeightMap {
 
         blendBounds.setBounds(new Vector2f(heightMapZone.absX, heightMapZone.absZ), zoneLoc, 0.0f);
 
-        float currentArea = (blendBounds.getHalfExtents().x * 2) *
-                (blendBounds.getHalfExtents().y * 2);
-        float zoneArea = (heightMapZone.getBounds().getHalfExtents().x * 2) *
-                (heightMapZone.getBounds().getHalfExtents().y * 2);
+        float maxBlendArea = (heightMapZone.maxBlend.getHalfExtents().x) *
+                (heightMapZone.maxBlend.getHalfExtents().y);
+        float currentArea = (blendBounds.getHalfExtents().x) *
+                (blendBounds.getHalfExtents().y);
+        float zoneArea = (heightMapZone.getBounds().getHalfExtents().x) *
+                (heightMapZone.getBounds().getHalfExtents().y);
 
-        float areaDelta = currentArea / zoneArea;
+        float blendDelta = zoneArea - maxBlendArea;
+        float currentDelta = zoneArea - currentArea;
 
-        interpolatedTerrainHeight = FastMath.LERP(areaDelta, interpolatedTerrainHeight, interpolatedParentTerrainHeight);
+        float percentage;
+
+        if (currentDelta != 0 && blendDelta != 0)
+            percentage = currentDelta / blendDelta;
+        else
+            percentage = 0.0f;
+
+        interpolatedTerrainHeight = FastMath.LERP(percentage, interpolatedTerrainHeight, interpolatedParentTerrainHeight);
+
+        interpolatedTerrainHeight = FastMath.LERP(percentage, interpolatedTerrainHeight, interpolatedParentTerrainHeight);
         return interpolatedTerrainHeight + heightMapZone.worldAltitude;
 
     }