ʻO ka wehe ʻana i ke silt, ke one, a me ka mea pali, mai hope o ka māka a me kahi kokoke i kāna kīkaha he mea nui no ka lawelawe pono ʻana o ka ʻōnaehana mana.
Hoʻemi ka sedimentation build-up i kahi hanauna uila o ka dam a me ka nui o ka wai e koi ana i ka dredging e kaohi i ka hana pono. I loko o nā waihona wai, hiki i ke erosion sediment ke kūkulu lohi a hana i ka mālama wai nui a me nā pilikia maikaʻi o ka wai.
ka Ellicott Series 670M Dragon® dredge a Pūnaewele 870JD Jet Dragon® dredge nā mīkini ʻoki cutterhead ʻelua e kūpono no ka hana hou ʻana i nā hana e hoʻoneʻe i ka silt, ke one a me nā ʻiliʻili mai hope o nā wai, nā waihona wai a me nā pā.
Mālama ʻo Hydro DamKe hoʻohana nei i kahi dredge e hoʻopau ai i ka silt, maikaʻi, one, ʻiliʻili, a me nā ʻōpala ʻē aʻe ma hope o kahi wai a a puni kāna mau mea e like me ka hale e like me ka Hoover Dam ma Las Vegas, Nevada (USA) a i ʻole Kelemānia ʻo Rappode Dam kahi hana nui e hōʻoiaʻiʻo ai. ka hana kūpono o ka ʻōnaehana hanauna mana o kahi makuahine a me kahi lako o ka wai e kūpono.
Kahu kikowaenaʻO ke kahe kūlohelohe o ka wai ka mea e koi pinepine ai i ka dredging o nā waihona i nā wahi e like me Guatemala a i ʻole Singapore. Ma waho aʻe o ka ʻeli ʻana no ka paʻakai a i ka ʻiliʻili paha i nā mines, ʻo ka hoʻoulu wai ʻana kekahi o nā ʻano dredging i hana mau ʻia. Hāʻawi nā kūpuna i nā loko wai inu no nā poʻe ma Malaysia a me ka mana i nā ʻōiwi ma Uganda ma waena o nā wahi ʻē aʻe o ka honua.
ʻO ke kumukūʻai o ka dredging e mālama ai i kahi waihona wai kokoke e uku nona iho ma muli o ka maʻalahi o ka mālama ʻana i nā waihona wai ma ke ʻano he kumuʻai maoli a me kahi noho no nā mea kanu a me nā holoholona ola. Hoʻopau ka ʻaʻai kūlohelohe, hoʻohaumia wai, a me nā nāhelehele i ke kāohi ʻana i nā waihona wai me ka lepo a me nā ʻōpala ʻē aʻe e hoʻoweliweli i kēia mau kumuwaiwai kūlohelohe. ʻO ka Dredging kahi hana mālama e pono ai no nā waihona wai ma ka honua holoʻokoʻa.
ʻOiai ʻoi aku ka liʻiliʻi o ka nui, koi mau nā pā i ka mālama mau e hōʻoia i ka hiki a me ka hanauna mana. ʻO kā Ellicott wahi liʻiliʻi a me ka waena waena e kūpono no kēia mau papahana nui - keu hoʻi i nā wahi mamao kahi hiki ʻole ke hoʻouna i nā ʻāpana nui.
