Table 1 Stormwater Assets The stormwater assets can have very different functions depending on the geomorphology of the area and the rainfall regime experienced. These factors are explained and discussed in a recent document “Procedures For Reviewing Blenheim Stormwater Capacity And Providing For New Areas (Draft)” (Williman 2014) The relationship between ground slope, rainfall and the levels of service objectives has a significant and precursory impact on the design and delivery of the infrastructure. Three slope categories were recognised for the Blenheim stormwater drainage catchment. Ranging from the foothills of the Wither Hills to the very flat lands on the valley bottom. The infrastructure has different purpose and function in each of the areas. A similar analysis of the steep catchments around Picton and Havelock will have a very different outcome and basis for developing strategic management plan. 1.6 Stakeholders The plan is a prime planning reference document for managers and engineers within the Assets & Services Department and operators of the system. It provides a systematic plan for the ongoing operation, maintenance and upgrading of the stormwater assets in order to meet the declared objectives of the community. It will be a source of information to the Council corporate planners and finance officers, building control and resource consent staff. Marlborough is a unitary authority and, as such, is responsible for environmental monitoring and the quality management of natural water. Urban stormwater discharges can be a major contributor to local waterways. The District Health Board has an important role in monitoring and advising on public health issues such as bathing water quality. Civil defence and engineering lifeline utilities have a particular interest in the functioning of the stormwater system and possible flooding issues. The performance of stormwater drainage may have a significant impact on local business. Flooding of business premises and blocked roading may interrupt normal business or obstruct staff with damaging financial consequences. Industrial and commercial businesses may need to implement site controls to prevent spillages or other sources of pollution into the stormwater system. Other businesses are reliant on abstraction from surface water and are stakeholders in the quantity and quality of the water available. Aqua culture is a huge contributor to the local economy. Generally the sites of aqua-cultural production are remote from the urban areas but contaminants may be enduring with unforeseen consequences from accumulation or accretion into the wider environment. The local iwi have deep cultural association with the aquatic environment and have a close interest in the discharges from urban areas. Similarly there are many social and environmental groups that have vested interest in quality of the receiving water – Forest & Bird, Guardian of the Sounds, Grovetown Lagoons Restoration Project, various sporting and recreational clubs and individuals. 1.7 Organisational Structure The stormwater service is part of the Assets and Services Department of Marlborough District Council. The capital programme is managed by the Planning and Development Engineer and the day-to-day running of the system by the Operations and Maintenance Engineer. The structure of the department is shown in Figure 1. The department has its own Finance and Information Manager to supervise the budget and liaise with the Corporate Finance Department. Page 9