Ukubalwa kwevolumu yamanzi emgqonyeni ongakapheleli
Sibawa utjengise ubukhulu ngamamilimitha
D - ububanzi besitja
H - izinga lamanzi
L - ubude bomgqomo
Ihlelo lizokubala ivolumu yamanzi emgqonyeni, ivolumu epheleleko neyamahhala, kanye neendawo eziphezulu.