About Stormwater Management Plan

    What is a Stormwater Management Plan?

    A Stormwater Management Plan (SMP) is Council’s municipality‑wide, 10-year strategic plan that sets the vision, objectives and prioritised actions to manage urban and regional stormwater quantity and quality reducing flood risk, protecting waterways and public health, and aligning with Integrated Water Management (IWM) principles. 

     The SMP:

    • identifies hazards and risks from management of urban and regional stormwater
    • defines time‑bound actions and targets
    • establishes governance and monitoring (MERI) arrangements and 
    • is developed with input from water authorities, catchment managers and the community.

    Why is Council preparing one now?

    In Victoria, councils are required to create and update their stormwater plans at least every five years. Our Stormwater Management Plan sets out priorities and actions for East Gippsland, based on local information and feedback from our community.

    What is not included in this stage of the Stormwater Management Plan?

    This phase will not include new detailed flood modelling, mapping of overland flow paths, or any site‑specific design or construction drawings.

    Instead, this stage focuses on bringing together existing information, speaking with the community and stakeholders, and developing a practical action plan. This plan will include a risk‑based method for prioritising projects and a proposed capital works program.

    Any locations that need more detailed studies or design work will be identified as future actions.

    What do terms like “OMLI” and “General Environmental Duty” mean for Council?

    OMLI stands for Obligations of Managers of Land or Infrastructure. These obligations require councils to plan for stormwater risks and report on how they are managing them.
    The General Environmental Duty requires Council to do what is realistic and achievable to prevent harm to the environment and human health.
    Our Stormwater Management Plan helps Council meet these responsibilities by clearly setting out how we manage stormwater risks.

    How often will the Stormwater Management Plan be reviewed and reported on?

    Councils must review, update and publicly report on their Stormwater Management Plan at least once every five years.
    This ensures the plan stays up to date, reflects new information, and responds to changes in the community and local environment.

Drainage and Flooding

    How will the Stormwater Management Plan reduce local flooding and improve drainage where I live?

    We use a simple and consistent process to work out which drainage upgrades are most urgent.
    We look at things like:

    • how likely an area is to flood
    • the condition of the existing drains
    • what the community needs and has told us

    We then use known problem spots and Council’s current guidelines to create a works list. This helps us focus on fixing the highest‑risk areas first.

    Will Council be doing detailed flood modelling or overland flow mapping as part of this plan?

    Not in this phase.
    If a location needs detailed flood studies or overland flow mapping, it will be listed as a future action.

    How are flood maps created, and will I be able to see the results for my area?

    Flood maps are created using computer models, elevation data (such as LiDAR) and local observations.
    New flood mapping is not included in this stage, but any future mapping will be released once it has been fully checked and verified.

    What’s the difference between riverine flooding and flash flooding in our region?

    • Riverine flooding happens when rivers or creeks overflow their banks and spread across the floodplain. This usually develops over hours or days.
    • Flash flooding happens quickly during intense rainfall when drains or natural flow paths can’t keep up, causing water to pool or flow rapidly along streets and properties.

    If detailed flood modelling isn’t included yet, how do you make fair decisions?

    We focus on the areas that need attention the most. To do this, we look at things like:

    • how likely flooding is, and how much impact it could have
    • the condition of the drainage system
    • any service issues the area is causing
    • nearby development that might affect drainage
    • feedback we’ve received from the community

    This approach helps us make decisions that are consistent, transparent, and focused on the places with the greatest need.

Development and Integrated Water Management (IWM)

    What changes will developers and builders see?

    Many developments in Victoria already have to meet best‑practice stormwater rules.
    Our Stormwater Management Plan will make it clearer what Council expects locally, so applicants know the standards we apply during the planning and building process.

    What is Integrated Water Management (IWM), and how does it relate to the Stormwater Management Plan?

    Integrated Water Management, or IWM, is about different organisations working together to plan and manage the whole water cycle things like rainwater, stormwater, drinking water and wastewater to get the best outcomes for the community, the environment and the local economy.

    Our Stormwater Management Plan supports this regional work by helping identify projects that offer multiple benefits or could be funded in partnership with others.

    This stage of the project only looks at planning and priorities it doesn’t include detailed design or construction.

    Will the plan address waterway health and pollution, not just drainage?

    Yes. The Stormwater Management Plan considers flood risk, the condition of stormwater assets and water quality.
    It includes practical actions, such as opportunities for Water Sensitive Urban Design, that help reduce pollution and protect our creeks, lakes and estuaries.

    FAQ updates

     FAQs may be amended to provide further information or clarity as required throughout the project.