public void GetStormWaterOutflow(int drainageNetworkInstanceID, int numberOfOutflowNodes, ref double[] outflow)
 {
     if (!MohidLandEngineDLLAccess.GetStormWaterOutFlow(ref drainageNetworkInstanceID, ref numberOfOutflowNodes,
                                                        outflow))
     {
         CreateAndThrowException();
     }
 }