diff --git a/src/components/tideGraph/TidalGraphComponent.tsx b/src/components/tideGraph/TidalGraphComponent.tsx
index 9eaeb25..76c9ed8 100644
--- a/src/components/tideGraph/TidalGraphComponent.tsx
+++ b/src/components/tideGraph/TidalGraphComponent.tsx
@@ -53,7 +53,10 @@ export function TidalGraphComponent({
     <LineChart
       h={800}
       data={graphData.filter(
-        (data) => data.date >= startTimestamp && data.date <= endTimestamp
+        (data) =>
+          data.date >= startTimestamp &&
+          data.date <= endTimestamp &&
+          data.Height >= 0
       )}
       gridAxis="none"
       dataKey="date"
diff --git a/src/components/tideGraph/graphDataGenerator.ts b/src/components/tideGraph/graphDataGenerator.ts
index d3938c9..9d8bdf7 100644
--- a/src/components/tideGraph/graphDataGenerator.ts
+++ b/src/components/tideGraph/graphDataGenerator.ts
@@ -84,12 +84,10 @@ export const graphDataGenerator = (
             Math.abs(heightDifferenceToNextTide) / 2
           ).toFixed(3)
         );
-        if (derivedHeight >= 0) {
-          plotPoints.push({
-            date: t,
-            Height: derivedHeight,
-          });
-        }
+        plotPoints.push({
+          date: t,
+          Height: derivedHeight,
+        });
       }
     }
   }