No. You should not do this, even if your creek rarely holds water.

Blocking a creek with rocks, concrete or any other material can disrupt the natural flow of water, leading to flooding and erosion.

Concreting the channel can speed up the flow of water, adding to flooding and erosion further downstream. These changes can also remove valuable aquatic habitat.

Before making changes to a creek or land next to a creek, check what approvals are needed. You can contact Council's duty planner to confirm what approvals you'll need.

You will also need to think about how any changes might impact other properties. Property owners may be held liable for actions that redirect stormwater onto neighbouring properties or which interfere with natural water flow paths.