Stormwater Management & Roof Drainage Solutions

Comprehensive stormwater management is essential for property protection, flood prevention, and compliance with local regulations. At OTG Hydraulic Design, we provide specialised, cost-effective, and engineered stormwater solutions that cater to diverse site conditions across Western Australia.

Expert Stormwater Management Plans for Council Approval

OTG Hydraulic Design develops detailed stormwater management plans (SMPs) that meet all requirements for council approval and align with the National Construction Code of Australia and the Stormwater Management Manual of Western Australia. Our team ensures that all designs are tailored to your site’s specific conditions, including soil type, groundwater levels, and overland flow paths. We aim to provide solutions that are compliant, effective, and sustainable.

Our Stormwater Design Services

Our stormwater design solutions integrate best practices, safety measures, and compliance with all relevant regulations. Our expertise covers:

Stormwater Management Plans for Council Approval: We prepare SMPs that are fully compliant with local authority guidelines, ensuring smooth approval processes and effective water management strategies.
Custom Gutter Systems: Engineered eaves, valley, and box gutters that efficiently manage roof runoff, preventing overflow and structural damage.
Sump & Downpipe Sizing: Properly sized sumps and downpipes to accommodate site-specific water volumes, optimising stormwater discharge.
Infiltration Systems: Installation of soak wells and drainage cells to enhance groundwater recharge and manage surface runoff.
Retention & Detention Systems: Designed to control stormwater flow rates, reduce flood risk, and comply with local council requirements.

Groundwater & Rainwater Harvesting Systems: Advanced designs for water harvesting that support sustainable water use and minimise overall demand.
Swales & Bioswales: Natural, sustainable solutions for stormwater disposal, enhancing filtration and reducing pollutant loads.
Pollutant Trap Design: Innovative treatments to remove debris, oils, and other contaminants, protecting downstream water quality.
Overland Flow & Flood Mitigation: Strategies to manage minor floods and overland flow, safeguarding properties from water damage.
Car Park & Hardstand Drainage: Customised drainage solutions for parking areas and hardstands to ensure effective stormwater management and compliance.

Why Choose OTG Hydraulic Design for Stormwater Solutions?

Compliance with Council Requirements: Our designs are developed with a focus on obtaining council approval and meeting all local authority requirements, ensuring that projects progress smoothly.
Risk Analysis & Best Practice: We conduct comprehensive risk assessments and adhere to best practice principles, ensuring long-term performance and safety.
Proven Track Record: With experience across various projects—commercial, industrial, and residential—OTG Hydraulic Design delivers effective and compliant solutions tailored to your needs.

Preventing Flooding & Property Damage

Inadequate stormwater management can lead to costly repairs, structural damage, and compliance issues. Our proactive approach includes thorough assessments of overland flow paths, groundwater conditions, and geotechnical factors, ensuring effective design solutions that meet all statutory requirements and council standards.

Need a stormwater management plan for council approval?

Contact OTG Hydraulic Design for a Free Consultation Today!

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Call us or request a quote today to find out how we can help!

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0408 694 623

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Hydraulic Design Specialists

Perth. Sydney. Brisbane. Melbourne.

Accreditation

OTG designs and delivers projects in line with the National Construction Code and adheres to key Australian Standards including:

AS 3500 series for plumbing, drainage, stormwater, and heated water services
AS 5601 for gas installations
AS 2118, AS 2419, AS 2441, and AS 2941 for fire safety systems

Our commitment to these standards ensures the highest levels of safety, efficiency, and regulatory compliance in every project we undertake.

Licensed Plumbing Contractor: PL8000

Gasfitting Permit: GF12399