--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/TkhCalculator.java	Thu Aug 02 20:14:26 2018 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/TkhCalculator.java	Fri Aug 03 17:00:45 2018 +0200
@@ -135,7 +135,7 @@
         if (Double.isNaN(meanBedHeight))
             return TkhCalculateState.NO_BED_HEIGHT;
 
-        final double flowDepth = Formatter.roundFlowDepth(wst) - Formatter.roundFlowDepth(meanBedHeight);
+        final double flowDepth = Formatter.roundFlowDepth(wst).subtract(Formatter.roundFlowDepth(meanBedHeight)).doubleValue();
         row.putValue(SInfoResultType.flowdepth, flowDepth);
 
         final double discharge = this.dischargeProvider.getDischarge(km);
@@ -175,14 +175,14 @@
 
         switch (kind) {
         case starr:
-            row.putValue(SInfoResultType.tkhup, (double) Math.round(tkh));
+            row.putValue(SInfoResultType.tkhup, Math.rint(tkh));
             row.putValue(SInfoResultType.tkhdown, 0.0);
             break;
 
         case mobil:
         default:
-            row.putValue(SInfoResultType.tkhup, (double) Math.round(tkh / 2));
-            row.putValue(SInfoResultType.tkhdown, (double) -(Math.round(tkh / 2)));
+            row.putValue(SInfoResultType.tkhup, Math.rint(tkh / 2));
+            row.putValue(SInfoResultType.tkhdown, -(Math.rint(tkh / 2)));
             break;
         }
 
@@ -230,11 +230,11 @@
 
         switch (tkhKind) {
         case starr:
-            return flowDepth - Math.round(tkhValue) / 100.0;
+            return flowDepth - Math.rint(tkhValue) / 100.0;
 
         case mobil:
         default:
-            return flowDepth - Math.round(tkhValue / 2) / 100.0;
+            return flowDepth - Math.rint(tkhValue / 2) / 100.0;
         }
     }
 }
\ No newline at end of file