Do you need a Stream Ecological Valuation (SEV)?

Generally speaking if you are planning a development that will require you to make any change to the stream environment then you will be required to undertake a SEV. Common changes include putting in a culvert or piping a section of stream.

The SEV score of the stream at present (i.e. before the work is done), and the predicted score after restoration work is done is recorded. These figures are then used to calculate the amount of stream mitigation required to offset the negative ecological impact of the development.

Our Ecological Consultants can:

  • Undertake SEV assessment and provide SEV report.
  • Talk you through mitigation plans and requirements.
  • Develop a restoration plan to meet council mitigation requirements.

Stream Ecological Valuation Process

The SEV method assesses a number of stream ecological functions covering:

  • Hydrology (process associated with water storage and transplant)
  • Biogeochemical (relates to processing of minerals, particulates and water chemistry)
  • Habitat provision (types, amounts and quality of habitats that the stream reach provides for flora and fauna)
  • Biotic functions (occurrence of diverse populations of native plants and animals that would expect to find in the stream).

Wetlands Assessments

We can provide wetland assessments of areas to be restored or areas that are damaged.

This may include:

  • Defining the extent of the wetland (via wetland delineation if required)
  • Defining the ecological value of the wetland
  • Detailing how impacts on the wetland can be avoided, remediated and/or mitigated
  • Recommendations for enhancement actions.

Contact our Ecology team today for a SEV or advice on development near a stream or wetlands.