Wannan na'urar dace da inji dumping na radiant ko vertical ruwan sama tafkin (∀<15m) tare da tsakiya ba tare da tushe. Injin yana da wani madaidaicin dandamali a kan tafkin, duk nauyin injin yana aiki a tsakiyar gada lokacin aiki. Ruwan datti ta hanyar tafkin tsakiyar ruwa mai gudanarwa yana gudana daidai zuwa tafkin kewaye, tare da rage gudun gudanarwa, abubuwa masu dakatarwa a cikin ruwan datti suna zuba a ƙarƙashin tafkin, na'urar da ke ƙarƙashin tafkin tana tsara sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran sauran