Stormwater infrastructure plays a vital role in protecting built environments from flooding, erosion, and runoff damage. At Hammond Civil, we provide complete stormwater drainage and infrastructure services throughout Coffs Harbour and surrounding areas. Our systems are built to comply with local council specifications and perform reliably under Mid North Coast conditions. If you are planning a development or civil project that requires stormwater drainage in Coffs Harbour, speak with our team to arrange a detailed consultation and scope of works.
Stormwater drainage systems are designed to capture, direct, and control runoff caused by rainfall. In developed areas where surfaces are sealed or compacted, water cannot soak into the ground. Without drainage systems, this runoff can flood buildings, undermine roads, and damage infrastructure.
A complete drainage system typically includes underground pipes, pits, culverts, surface inlets, and outlet structures. These elements must be planned and installed to match the capacity of the catchment, maintain flow control, and protect downstream assets. Hammond Civil ensures all drainage designs account for local conditions and meet council and state-level drainage standards.
Stormwater infrastructure consists of interconnected components that manage water movement across a site. This includes pipework, culverts, pits, detention basins, headwalls, and discharge points. Hammond Civil installs drainage systems using materials such as PVC, HDPE, concrete, steel, and ductile iron. Each material is selected based on flow requirements, load capacity, and environmental conditions.
Pipes are sealed using gaskets and approved materials to prevent leakage and ensure structural integrity. Where needed, we also construct box culverts and reinforced pits to handle higher volumes or heavy traffic loads. Inlet structures and maintenance access points are installed to facilitate cleaning and inspections throughout the life of the system.
We also deliver detention and retention systems to control discharge rates. These basins temporarily hold stormwater and release it slowly into downstream systems, helping reduce pressure on council infrastructure during peak rainfall.
In New South Wales, the responsibility for stormwater runoff is shared between private landowners and local government. Property owners are responsible for managing water within their site boundary. This includes ensuring roof water, paved runoff, and other flows are directed into approved drainage systems without impacting neighbouring properties.
Local councils take responsibility once stormwater enters public infrastructure. Councils manage street drainage, kerb and gutter systems, inter-allotment drains, and detention basins. Developers are required to deliver compliant infrastructure up to the connection point with the public system.
Hammond Civil helps clients meet their obligations by constructing drainage systems that align with council requirements and applicable planning conditions. We also assist with design coordination and approval processes to ensure smooth progression through each stage of the build.
Hammond Civil delivers a full range of stormwater drainage services, working from initial site preparation through to final inspection and handover. We construct both standard and complex drainage networks that integrate with surrounding civil infrastructure.
Our services include trenching and installation of stormwater pipes, construction of culverts, headwalls, and access pits, as well as drainage tie-ins for subdivisions and commercial projects. Where required, we incorporate detention or retention systems to regulate stormwater discharge and reduce the risk of downstream flooding.
All drainage works are pressure tested and inspected in line with council standards. We prepare compliance documentation and provide support during final engineering sign-off.
Drainage infrastructure must be installed with attention to safety and compliance. Our team applies appropriate safety protocols on all excavation sites, including utility locating, barrier controls, and trench stability measures.
We follow Coffs Harbour council technical guidelines and apply internal quality checks throughout the installation process. This includes pipe bedding inspections, backfill compaction testing, and structural checks on pits and culverts. Every component is delivered to withstand long-term use and meet current performance standards.
Hammond Civil has delivered civil infrastructure across the Mid North Coast since 1988. We are a family-owned business with a strong focus on workmanship, reliability, and regulatory compliance. All stormwater works are carried out by our in-house team, using well-maintained equipment and experienced operators.
Clients choose us because we take responsibility for the full scope. From early-stage coordination with design teams to final delivery and certification, we maintain clear communication and deliver consistent results. Whether you’re managing a subdivision or a large-scale infrastructure upgrade, we ensure your drainage systems are delivered correctly and without unnecessary delays.
If you are planning stormwater drainage or infrastructure works in the Coffs Harbour region, Hammond Civil is ready to support your project. Contact us to arrange a consultation, review your drainage plans, or request a fully scoped delivery proposal.