I have watershed in which I have considered all the sub watershed at fourth and third order of stream. But there are still remaining streams forming a parallel network which are directly falling to the 6th order river in watershed . For these areas calculation of morphometric parameters using standard formula is not possible as its not following the strahler ordering and 1st 2nd order stream with 6th order stream are present . What should I do ? Should I leave these areas as unclassified ??? But what if I am asked to propose a structure over that piece of land??? Kindly give your valuable suggestions.