Ukucoca i-grooves ye-drainage, uxinzelelo oluphezulu lwemibhobho yefeni isetyenziswa ngokubanzi. Umbane ofafazwe ngulo mlomo unefuthe elinamandla kwaye unokususa ngokulula amabala kumphezulu wento. Lo mbhobho ngokubanzi wenziwe ngezinto ezilukhuni kwaye unokumelana noxinzelelo oluphezulu. Nxiba enganyangekiyo, kwaye umlomo unomsebenzi wobomi obude.

Ukuba umjelo wokuhambisa amanzi luhlobo lombhobho kwaye ungcwatyelwe nzulu phantsi komhlaba, emva koko umlomo wombhobho weflethi awusayi kuphinda usebenze, unokutshiza kuphela umphezulu wento, kodwa awunakugungxula ngaphakathi kumbhobho.

Kule meko, ungasebenzisa umbhobho wokugungxula umbhobho, osebenzisa umgaqo wokujola ngenaliti, kwaye usebenzise amandla okuphendula abunjwe luxinzelelo oluphezulu ngexesha lenaliti ukutyhala umbhobho wokuya phambili, kunye nodaka kunye nezinye izinto zangaphandle ezisendleleni ziya icocwe kwaye icocwe ngoxinzelelo oluphezulu. Umbhobho usebenza ngokufanelekileyo.

Wamkelekile ukuba unxibelelane nathi nangaliphi na ixesha ukufumana ulwazi oluthe kratya malunga nombhobho kunye nesicatshulwa semveliso esisezantsi.