Best practice management
A multi-task approach to mitigating the potentially damaging effects of stormwater.
Parkes Shire Council endeavours to manage urban stormwater according to the principles of best practice to reduce impacts on waterway health, minimise stormwater flooding and provide an alternate water source.
Parkes Stormwater Management Plan
Council developed a Parkes Urban Stormwater Management Plan in 2000 to address a number of issues affecting stormwater quality. The primary purpose of this Plan is to improve the health and quality of the waterways in Parkes, which flow into Goobang Creek. The Plan will contribute to this objective by:
- Facilitating a co-operative approach to Stormwater management on a catchment basis where more than one stormwater manager is present;
- Identify management priorities and actions for councils and other stormwater managers within a catchment. This will enable organisations to be better prepared to apply for external sources of funding; and by
- Establishing a program of actions identified on a catchment basis that can be integrated with Councils' management planning process under the Local Government Act. The Plan has provided Council with direction and there is now a more co-ordinated approach to addressing stormwater pollution within Parkes.
The Plan identified two obvious "Hot Spots" in town that are greatly affected by urban runoff, Bushmans Dam (Kelly Reserve) and PAC Park Creek. Two major projects have been undertaken to address the "Hot Spots"; the reconstruction and rehabilitation of Bushmans Dam, and the installation of a gross pollutant trap at a major stormwater discharge point into PAC Park with a complementing education program.
Responsibilities for developers
Minimising stormwater issues associated with development works within Parkes Shire is the responsibility of the developer in both rural and urban settings. In the urban environment, the primary aim of a stormwater management system is to ensure stormwater generated from developed catchments causes minimal nuisance, danger and damage to people, property and the environment. To this end, any development proposal must consider stormwater drainage design as part of the development planning.
Stormwater drainage design
The objectives of stormwater drainage design include:
- Limit flooding of public and private property, both within the catchment and downstream, to acceptable levels.
- Protect and enhance downstream environments, including recognised social, environmental and economic values, by appropriately managing the quality and quantity of stormwater runoff.
- Community health and safety. Ensure stormwater and its associated drainage systems are planned, designed and managed with appropriate consideration and protection of community health and safety standards, including potential impacts on pedestrian and vehicular traffic.
- Adopt and promote water sensitive design principles, including appropriately managing stormwater as an integral part of the total water cycle, protecting natural features and ecological processes within urban waterways, and optimising opportunities to use stormwater as a resource.
- Appropriately integrate stormwater systems into the natural and built environments while optimising the potential secondary uses of drainage infrastructure.
- Ensure stormwater is managed at a social, environmental and economic cost that is acceptable to the community as a whole and that the levels of service and the contributions to costs are equitable.
Stormwater Drainage Design Guidelines
Council has developed Stormwater Drainage Design Guidelines (SDDG) that aim to help developers provide adequate and appropriate storm water drainage, and to assist in compliance with conditions of development and/or construction consent. It is not intended that the SDDG cover all possible situations, and it does not absolve the designer of the necessity to plan for the specific requirements of the site being dealt with.
Council retains the right to impose differing conditions when approving development proposals in respect of a particular development, having regard to good engineering practice.
For more information about preventing stormwater pollution, visit the NSW Environment Protection Authority (EPA) website here.