Hamilton Watercourse Assessment

Client: Hamilton City Council

A section of stream from the Mangakotukutuku catchment in Hamilton.

A section of stream from the Mangakotukutuku catchment in Hamilton.

Morphum Environmental was engaged by Hamilton City Council to assess the entire open watercourse network in the Mangakotukutuku catchment, which totals 35 kilometres in length.

Mangakotukutuku is a significant catchment in Hamilton given its ecological habitat and intact natural gully system. The catchment discharges into the Waikato River at Peacockes Road esplanade. A large proportion of the catchment is undeveloped and is earmarked for urban growth.

Morphum Environmental collected baseline ecological and hydrological data about the existing state of the watercourse, to help inform ongoing management and enhancement of the gully. In addition, the NZTA Southern Links road management project has designated several significant highways for construction within the undeveloped area. This increases the complexity of the watercourse assessment project, and amplifies the importance of managing the area to reduce effects on the natural environment.

Due to the significant changes set to occur in the catchment, Morphum Environmental collaborated with several other consultancies and Hamilton City Council, to gain insight into the catchment as a basis for engagement in long term management of the area. As a result, our team was able to inform Hamilton City Council around how best to balance maintenance of the natural environment with the facilitation of growth in the region.

Key deliverables:

  • Watercourse assessment report and geodatabases for future urban areas of Mangakotukutuku

  • Geospatial data (GIS) collection through mobile technology.

  • Detailed stream ecological health, stormwater infrastructure and conveyance information analysed to inform effective catchment management.

  • Specific management actions and enhancement opportunities identified to improve watercourses, enhance degraded streams and remedy specific stormwater issues, while recognising future growth pressures in the catchments.