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Kōrero: Irrigation and drainage

Ngā whakaahua, ngā rauemi katoa

Mai i te whārangi 1 - Regional characteristics

Rakaia River

New Zealand annual rainfall

New Zealand annual rainfall

Irrigated land

Soil drainage

Mai i te whārangi 2 - Beginnings of irrigation

Gold sluicing

Irrigation channels

Irrigation channels

Bob Semple in an irrigation pipe

Bob Semple in an irrigation pipe (1 o 3)

Rangitātā diversion race intake

Rangitātā diversion race intake (2 o 3)

Rangitātā diversion race

Rangitātā diversion race (3 o 3)

Mai i te whārangi 3 - The post-war period

Winchmore Irrigation Research Station

Winchmore Irrigation Research Station

Border dyke irrigation system

Border dyke irrigation system

Mai i te whārangi 4 - Irrigation after 2000

Irrigated and non-irrigated pasture

Irrigated and non-irrigated pasture (1 o 2)

Projected land use with and without irrigation

Projected land use with and without irrigation (2 o 2)

Dam water storage

Dam water storage

Waitaki irrigation scheme

Waitaki irrigation scheme

Centre pivot spray irrigation

Centre pivot spray irrigation

Mai i te whārangi 5 - Irrigation and the environment

Recreational use of water

Recreational use of water

Dairy cows and nitrate leaching

Dairy cows and nitrate leaching

Lysimeters

Mai i te whārangi 6 - Irrigation methods

Wild flooding

Border dyke irrigation

Border dyke irrigation

Traversing irrigation unit

Traversing irrigation unit (1 o 3)

K-line irrigation

K-line irrigation (2 o 3)

Moving irrigation unit

Moving irrigation unit (3 o 3)

Drip irrigation

Drip irrigation

Measuring soil moisture

Measuring soil moisture

Mai i te whārangi 7 - Drainage

Open drains

Graded banks

Tile drains

Wetlands

Me pēnei te tohu i te whārangi:

Terry Heiler, 'Ngā whakaahua, ngā rauemi katoa', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/irrigation-and-drainage/media (accessed 28 September 2023)

He kōrero nā Terry Heiler, i tāngia i te 24 Nov 2008