Rangitaiki-Tarawera Rivers Scheme
This scheme encompasses two rivers the Rangitaiki and the
Tarawera. The Rangitaiki catchment covers 3005 km2.
The Tarawera catchment covers 984 km2.
Order a copy
To order a copy of the Rangitaiki Tarawera Floodplain Management
Strategy Stage 1 please contact us. Cost:
$27. Alternatively, click on the link above to download a copy.
Scheme meeting notes
Bay of Plenty Regional Council has a network of
liaison people for each of the EBOP-managed river and drainage
schemes in the region. The liaison group members are the
representatives for the ratepayers of their particular scheme.
Meetings are held with the liaison groups in March and November of
each year. Extraordinary meetings are called as
required. Below is a copy of the notes from the last cycle of
liaison group meetings.
For previous meeting notes contact us on the
Rivers Scheme Rating Area map - index sheet (2MB, pdf)
The Rangitaiki River rises 130km from the Bay of Plenty coast
and 32km east of Lake Taupo to an elevation of 800m. It flows 64km
across the Kaingaroa Plains to Murupara where the flood flows are
only two or three times the normal as a result of the absorbent
pumice plains. 20km further on the Whirinaki and Horomanga
tributaries join the main channel contributing relatively large
flood flows and quantities of shingle.
The river flows across the Galatea Plains before entering the
hydrolake Lake Aniwhenua. Lake Rerewhakaaitu drains into the river
which then passes through a gorge and out on to the Waiohau Plains
to the hydrolake Lake Matahina. Finally the Rangitaiki passes
through a valley, across the Rangitaiki Plains and out to sea at
Thornton through a 1500m cut excavated in 1913.
The Tarawera River drains from Lake Tarawera at 300m elevation.
The river drops to 150m in 6.5km and continues to fall to Kawerau.
Below Kawerau the grade is more gentle. Tributaries such as the
Mangawhio, Waiwhakapa, and Mangate join the Tarawera River above
Kawerau, the Mangaone and Ruruanga near Otakiri and Awakaponga near
Matata. The Rangitaiki Plains drainage scheme also contribute to
the Tarawera flow. The pumice of the Tarawera catchment and ponding
effect of the lake regulate the runoff and maximum recorded floods
have only been two to three times the normal flow.
What Does the Scheme Involve?
Substantial stopbanking of the Rangitaiki River at Te Teko the
Tarawera is stopbanked below the State Highway 30 bridge the scheme
is designed to provide protection from a 100 year flood.