Stormwater Management




Flood Management & Modelling


Advisory and Planning Support


Wastewater and Water Supply


Fluvial Geomorphology & Stream Erosion


Rain puddles on a wet street beside a storm drain grate, with a person’s reflection in the water.

Stormwater Management

  • Planning and designing stormwater systems that manage flood risk, improve water quality, and overall support development.
  • Water sensitive urban design, low impact and green infrastructure services
  • Catchment management and network consenting
  • Catchment assessments and integrated stormwater management planning
  • Detention and retention system design
  • Water quality treatment device selection
  • Overland flow path assessments
  • Flood modelling and hazard mapping


Flood Management

& Modelling

  • Assessing flood hazards and developing targeted measures that improve resilience at both a site and catchment level.
  • 1D and 2D flood modelling
  • Floodplain assessments & analysis
  • Overland flow path impact assessments
  • Development of mitigation options
  • Climate change scenario testing
  • Resilience assessments of developments
  • GIS mapping and spatial analysis
  • Hazard mapping and technical input for consenting processes


Flooded yard with a small cabin, van, and trees standing in deep water.
Hands sketching a design layout with pencils and papers on a desk

Advisory &

Planning Support

  • Clear, well reasoned advice that helps projects move smoothly through planning, consenting, and delivery.
  • Technical reporting
  • Hearing, caucusing and Environment Court representation
  • Community engagement and consultation practices
  • Feasibility assessments
  • Strategic water infrastructure input
  • Expert evidence & peer reviews
  • Plan change support
  • Stakeholder engagement


  • Reliable advice and design for both existing or new developments, network upgrades, and long term planning.
  • Network modelling
  • Capacity assessments
  • Infrastructure design
  • Servicing strategies


Aerial view of a circular concrete structure with dark water and a diagonal metal barrier inside.
Black-and-white forest stream with sunlight reflecting on water and mossy rocks
  • Desktop geomorphic assessment (historical imagery, LiDAR, GIS mapping, Geomorphic Change Detection)
  • On-site geomorphic walkover and field assessment
  • Stream erosion assessment for masterplanning, SMPs, resource consents, and fast-track applications
  • Excess shear stress assessment, and bank-stability assessment including B-STEM.
  • Hydrological and 2D hydrodynamic modelling for erosion assessment under future climate change scenarios.
  • Morphodynamic (sediment-transport) modelling evaluating stream channel evolution.
  • UAV drone survey and high-resolution terrain capture.
  • Evaluation of stream system processes and catchment dynamics.
  • Evaluation of risk to infrastructure and people
  • Recommendations and detailed design of mitigation measures.