--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flood_duration/FloodDurationCalculator.java	Thu Oct 04 12:48:57 2018 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flood_duration/FloodDurationCalculator.java	Thu Oct 11 18:39:21 2018 +0200
@@ -137,26 +137,15 @@
      */
     public WQDay calcWQDays(final Calculation problems, final double station, final WINFOArtifact winfo) {
 
-        final WstValueTable wst = WstValueTableFactory.getTable(this.riverInfoProvider.getRiver());
-        final Gauge gauge = this.riverInfoProvider.getGauge(station, true);
-        final Object[] obj = gauge.fetchDurationCurveData();
-        final int[] udays = (int[]) obj[0];
-        final double[] qs = (double[]) obj[1];
-        final int[] odays = new int[udays.length];
-        final double[] oqs = new double[udays.length];
-        final double[] ows = new double[udays.length];
-        for (int i = 0, j = udays.length - 1; i <= udays.length - 1; i++, j--) {
-            odays[j] = 365 - udays[i];
-            final QPosition qpos = wst.getQPosition(gauge.getStation().doubleValue(), qs[i]);
-            if (qpos != null) {
-                ows[j] = wst.interpolateW(station, qpos);
-                oqs[j] = wst.getQ(qpos, station);
-            } else {
-                ows[j] = Double.NaN;
-                oqs[j] = qs[i];
-            }
-        }
-        return new WQDay(odays, ows, oqs);
+        final CalculationResult res = winfo.getDurationCurveData();
+        final WQDay wqday = (WQDay) res.getData();
+        if (wqday == null)
+            return null;
+
+        final int[] odays = new int[wqday.size()];
+        for (int i = 0; i <= odays.length - 1; i++)
+            odays[i] = 365 - wqday.getDay(i);
+        return new WQDay(odays, wqday.getWs(), wqday.getQs());
     }
 
     /**