I runga i ngā ara rerekē e toru o ngā mata wiri, ngā tikanga tirotiro rerekē, me ngā whakaritenga motuhake mō ngā momo ahumahi o te ōhanga ā-motu, kua hangaia ngā momo taputapu tirotiro wiri, ā, kua whakamahia whānuitia i roto i te rāngai ahumahi. I roto i te tari ahumahi whakarewa me te kaiwhakakotahi, ka whakamahia ngā mata wiri hei tirotiro mua me te tirotiro i te konganuku, ā, ka whakamahia te mata wiri hei whakarōpū i ngā hua o te mira. Hei whakapai ake i te taumata kukū, i roto i te rāngai ahumahi waro, mā te whakamahi i te mata wiri hei tango wai me te tango i te waro ma me te waro mutunga, ka whakatauhia te whakarōpūtanga o ngā matūriki waro maku me te ihirangi wai o te 7% ↑ 14% i raro i te 6m mā te tirotiro pai auau-teitei. Ko ngā raruraru maroke, te tirotiro mua i te waro i roto i ngā tipu hiko wai me ngā tipu hiko wera, ka kitea mā ngā mata wiri auau-teitei. I roto i ngā mahi hanga o ngā teihana hiko wai, pērā i te Kaupapa o Three Gorges, e hiahiatia ana ngā momo mata wiri hei whakarōpū i te onepu me te kirikiri, ā, i roto i te rāngai kawe waka, ko te mata o te onepu mārama me te paru tuatahi o te kirikiri me te mata o te raima uku, he mea nui ki te hanga rori tere, i roto i te rāngai matū, te mata o ngā rauemi mata me ngā hua matū, ngā maniua me te whakaranu. Kāore e taea te wehe i te whakarōpūtanga o ngā maniua mai i ngā mata wiri. Hei tāpiri, ko te tukatuka para mō ngā tari tiaki taiao me te whakamahinga o te paru wai waro i roto i ngā tipu hiko me ngā mata wiri kua noho hei taputapu mata nui.