As New Zealand cities grow, so too does the pressure on our ageing stormwater infrastructure. In addition to population growth, our stormwater systems are being pushed to their limits by climate change and the increasing frequency of extreme and damaging weather events.

Renewal needs and performance requirements must be carefully balanced and integrated. Morphum Environmental provides strategic advice and detailed design expertise for a wide range of stormwater projects – with your whole catchment and long-term sustainability in mind.

Enabling Te Mana o te Wai

At Morphum, we believe that our work must respect and uphold Te Mana o te Wai. We can help you strategise, plan and apply water-sensitive design solutions that meet all technical requirements, and best practice guidelines whilst weaving mātauranga Māori with western scientific methods to achieve collaborative outcomes.

We offer conventional stormwater modelling and designs, but it is our nature-based solutions, regeneration of waterways and habitat projects that we pride ourselves on.

Our team of ecologists, fluvial geomorphologists and engineers work closely together on stream works projects to create innovative designs that improve erosion protection, stream stability and enhance the natural habitat. We’re passionate about protecting fish passage and can provide a range of easy-to-construct solutions for remediating fish passage barriers.

Our experienced team are sought-after, often working on urgent stormwater works and flood response teams. Our pragmatic approach and reputation for delivering sustainable, cost-effective solutions is further enhanced by our ability to seek out value-add opportunities.

We use a wide range of respected and interactive web-based geospatial software to clearly communicate outcomes to our clients and their communities. The range of software we use for drafting drawings, catchment delineation, and hydrological and hydraulic modelling to inform our designs includes:

  • ArcPro GIS

  • 12d Model

  • HEC-RAS

  • HEC-HMS

  • BricsCAD

  • HY-8

  • MUSIC.

We can help you with the following:

  • Stormwater infrastructure design such as stream design, culverts, pipe networks, storage, detention/retention and reuse and treatment practices

  • Stormwater quality modelling

  • Hydrologic and hydraulic analysis

  • Stormwater management plans

  • Cost/benefit assessments for affordable Level of Service reviews, including cost optimisation and options analysis

  • Stormwater treatment device design including constructed wetlands and rain gardens

  • Overland flow path and flood management

  • Nature-like in-stream erosion protection and grade control structures such as rip rap rock toe protection, bank lining, Newbury riffles and weirs

  • Outfall erosion protection structure design

  • Regeneration of waterways and natural habitats

  • Health, safety and environmental management

  • Asset management

  • Real time data monitoring and interpretation of automated sensors in stormwater assets used to measure water levels, ph, temperature and other contaminants etc

  • Procurement documentation

  • Construction supervision

  • As-built drawings and project completion documentation

  • Fish passage barrier remediation

  • Soakage investigation.

Our Recent Projects