--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadFactory.java	Thu Sep 05 15:46:57 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoadFactory.java	Thu Sep 05 15:47:24 2013 +0200
@@ -486,6 +486,24 @@
         return new SedimentLoad();
     }
 
+
+    /**
+     * Returns range of matching measurementstation.
+     * If no direct match is found, the measurement-station with
+     * the next lower station is taken - but only if km is still in
+     * its range.
+     *
+     * The end of the range is the beginning of the next range (next as in
+     * next greater station), or if it is the last, by its own ranges end.
+     *
+     * @param stations Map of station to measurementstation (attention:
+     *                 the range of a m.station does not necessarily
+     *                 begin at the registered station).
+     * @param km       The station for which to find a measurementstation.
+     *
+     * @return The validity range of a station (interereted as described above
+     *         for given km or null if none found.
+     */
     protected static Range findMeasurementStationRange(
         TreeMap<Double, MeasurementStation> stations,
         double km
@@ -511,6 +529,7 @@
             endKm);
     }
 
+
     /**
      * Run query with grain parameter set to fraction, feed result into
      * load. Create load if null.