This section addresses issues of particular signiﬁcance associated with the Ihutai catchment. The catchment area includes the Ōtakaro and Ōpāwaho rivers, and Te Ihutai (the estuary), and generally follows the boundaries of the urban environment of Ōtautahi (Map 12).
The Ihutai catchment is an area of immense cultural and historical importance to tāngata whenua. The area was a place of signiﬁcant settlement and food gathering for Waitaha, Ngāti Mamoe and Ngāi Tahu for over 600 years. While the estuary itself provided an abundance of valuable food resources, equally important was the estuary’s catchment, which was made up of an extensive network of springs, waterways, swamps, grasslands and lowland podocarp forests.
The eﬀect of the city’s historical and ongoing urban development on Ngāi Tahu cultural values is a key kaupapa underlying issues and policies in this section. The catchment is a highly modiﬁed environment that has undergone dramatic change in the last 160 years, particularly with regard to the loss of mahinga kai, natural areas and indigenous habitats and ecosystems, and the decline of water quality. Ngāi Tahu cultural health assessments undertaken in 2007 and 2012 found the catchments are generally in a poor state of cultural health, based on cultural health assessment factors such as suitability of harvesting mahinga kai, water quality, physical and legal access, degree of external pressure on site, degree of modiﬁcation, and the presence and abundance of native ﬁsh, bird and plants species, as well as introduced species (see Figure 1).
The rebuild and redevelopment of Ōtautahi provides a unique opportunity to re-establish a strong and visible indigenous presence on the city landscape (Issue IH1), enhancing a sense of identity and belonging for Ngāi Tahu in the city.
Ngā Paetae Objectives
(1) Ngāi Tahu have a prominent and inﬂuential role in the rebuild and redevelopment of Ōtautahi, postearthquake.
(2) Ngāi Tahu has a more visible cultural presence in the urban environment, both on the physical landscape and in city planning and decision making processes.
(3) Ngāi Tahu sense of place and identity is enhanced through the restoration of the cultural health of the Ihutai catchment.
(4) Discharges of wastewater and stormwater to waterways in the urban environment are eliminated, and a culturally appropriate alternative to the discharge of urban wastewater to the sea is developed.
(5) Mahinga kai values and associations with the Ihutai catchment are re-established, alongside the urban built environment.
(6) The restoration and enhancement of indigenous biodiversity is an essential part of the image and brand of Ōtautahi, and an improved balance between exotic and indigenous plant species is achieved.
(7) Urban development reﬂects low impact urban design principles and a strong commitment to sustainability, creativity and innovation with regard to water, waste and energy issues.
(8) Wāhi tapu and wāhi taonga values are protected from inappropriate urban development.