Storm Water

Contact: Adrian Tonks (09) 438 9529

Storm water systems provide safe outlets for the control of water to prevent inundation while meeting natural resource requirements. The complete discipline involves catchment management policies, strategies and management plans; entwined with these are stormwater modelling for hydrology and hydraulics, treatment and quality analysis, design and construction and flood management.

Ruakaka Industrial Subdivision Storm Water Pond Design Plan.jpg

Ruakaka Industrial Subdivision Storm Water Pond Design Profile.jpg

One Tree Point Industrial Complex Stormwater Pond System Design

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Waikaraka Catchment Analysis

Cook Costello Ltd has prepared Catchment and Drainage Management Plans for Whangarei District, Kaipara District and the Far North District Councils.

Numerous analyses, investigations and designs have been carried out for residential, commercial, industrial and rural clients.

Designs range from:

Individual culverts beneath road ways
River diversions
Stop bank and flood and inundation protection schemes
Fully piped stormwater systems
Open channels
Flood level analysis

Waiarohia Flood Waters.jpg Waiarohia River Flood Assessment

Cook Costello Ltd are specialists in hydrology and hydraulics engineering.
Rainfall intensity and peak catchment flows analysed using HIRDS and HEC-HMS modelling tools.
Analysis and design of streams, rivers, open channels, pipe networks and manholes, retention/detention dams (Dam Safety Scheme Certification), stop banks, flood routing for reservoirs, discharges and water quality.
Contract documentation and tenders using all relevant specifications, tender assessment. Subsequent supervision and administration of contracts under NZS3910.