| Ngā uara tātai o te kōpae Torgo wāhi kotahi | ||||
| P/kw | Te pākoki/m | Te rere m³/s | Te roa o te rorohiko o te pūrere tuatahi (mm) | Te pākoki e tohua ana/m |
| 3.0kW | 15–70 m | 0.003-0.015 | kāore i te iti ake i te 50 | 40m |
| 10–60 m | 0.005-0.017 | kāore i mōhiotia te iti ake i te 65 | 30 | |
| 10–50 m | 0.008-0.025 | kāore i mōhiotia te iti ake i te 80 | 20 | |
| 5.0 kW | 10–50 m | 0.008-0.025 | kāore i mōhiotia te iti ake i te 80 | 40m |
| 10–40 m | 0.011-0.033 | kāore i mōhiotia te iti ake i te 100 | 30 | |
| 10–40 m | 0.014-0.042 | 150 | 20 | |
| 8.0kW | 10–70 m | 0.008-0.025 | kāore i mōhiotia te iti ake i te 80 | 60m |
| 10–70 m | 0.011-0.033 | kāore i mōhiotia te iti ake i te 100 | 45 | |
| 10–70 m | 0.014-0.045 | 150 | 30 | |
| 10.0 kW | 10–70 m | 0.011-0.033 | kāore i mōhiotia te iti ake i te 100 | 60m |
| 10–70 m | 0.011-0.033 | 150 | 40 | |
| 10–70 m | 0.015-0.055 | 150 | 30 | |
| 15KW | 10–100 m | 0.015-0.055 | 150 | 50 |
| 10–100 m | 0.025-0.11 | 200 | 30 | |
| 20kw | 10–100 m | 0.025-0.11 | 150 | 50 |
| 10–100 m | 0.03-0.15 | 200 | 30 | |
| 30kw | 10–100 m | 0.025-0.11 | 200 | 50 |
| 10–100 m | 0.03-0.15 | 250 | 30 | |

Ko te turu wai iti, te kaha wai iti, he turu tāwhai ā-hāngā i whakamāhunga mai e tātou kōmupīni hei whakamātautau i ngā rākau wai iti me ngā rākau wai waenga. I tōna hanga māmā, me tōna whai hāngā pai, kua rere kē tēnei i te whirinakitanga o ngā turu wai iti.
Ko tōna whāinga e whai ana he whakamāngai i te pūhanga o te wai e rere mai ana ki te pūhanga mātua. Ko te wai e rere ana i roto i te mātua, ā, ka whakamāua, kātahi ka pā atu ki ngā whāriki o te turupī, e whakamāui ana i te pou matua kia huri, ā, nā reira ka whakamāui i te kaitāwhai kia oti ai te hāngai i te hiko.

Ko te turupī iti o te wai, ko te kaitāwhai iti o te wai, he iti ngā wāhi katoa. Kāore he hanganga whakawhitinga pūrei, ā, he māmā ngā whakamātautau, nō reira he māmā ngā mahi whakamānui, te whakaputanga, me ngā mahi whakamātua i muri ake nei. He whānui ngā wāhi e whai ana i te hiko mai i te wai i ngā wāhi rerekē, ā, he mātua ngā whāinga o te whakamāhi me ngā whāinga ōkawa.
He tino pai te kaitāwhai iti o te wai mō ngā wāhi iti ki te wāhi rahi o ngā hiko wai. He teitei ngā whāinga o te hāngai i te hiko, ka hāngai i te hiko anō i ngā iti o ngā pāwhe, ā, he mātua ngā whāinga o te whakamāhi.
Ko te kōpū wai iti, te kōpū hiko wai iti i whakamāhinga e tātou rōpū he mea hanga mai i ngā wāhanga matua e whakamātautau ana i te whakamātautau, ā, he mātātoko kia taea ai te whakamāhi i ngā taupua wai pēnei i ngā wāhi pēnei. He roa ngā tau o tana whakamāhi, ā, he pūmau tonu ngā hiko i whakamāhinga. Ko tana hanga he māmā, nō reira he iti ngā wāhanga e whakamātautau ana, ā, he iti ngā utu mō te whakamāhi me ngā mahi whakamātautau.

He whānui ngā wāhi e whakamāhi ai te kōpū wai iti, te kōpū hiko wai iti. He pai rawa atu ki ngā wāhi e whai ana i ngā rākau wai, hei whakamāhi i ngā hiko wai o tēnei wāhi hei whakamāhi hiko. Ka whakamāhi i tēnei hei whakamāhi i ngā raru o te hiko o tēnei wāhi, ā, ka totohu hiko ki ngā whare noa, i ngā hapori i ngā wāhi tāwhai.
He tātai hoki tēnei mō te whakamāhi i ngā rohe maunga, i ngā rohe pākura. I tēnei wā, ka taea te whakamahi i tēnei turupī wāhi iti hei whakamahi i ngā awa maunga kia whakamāhinga ai te hiko. Rere kē mai i ngā pūnaha hiko wai nui e hiahiatia ana ngā hāhātanga whakamāhi maha me ngā whakamāhinga nui ki ngā awa, ki ngā wāhi wai, ko tēnei āhua o ngā turupī wāhi iti he whakamāhi hiko i te rere iti anō i te awherā.

