Get Involved in Blue Mountains Crayfish Count

By Alice Blackwood

Bushcare volunteers and Blue Mountains community members can now contribute to building knowledge about our local freshwater crayfish species, as part of an exciting new citizen science project, the Blue Mountains Crayfish Count.

Council’s Healthy Waterways Team runs annual crayfish surveys in three areas and waterbug surveys at more than sixty sites, but we are unable to conduct formal surveys in every stream- that’s where you come in!

By collectively gathering more data on crayfish, this helps us to get a better picture of the health of our crayfish populations, and in turn, the health of our waterways. It may also allow earlier detection of possible pollution incidents that are impacting on crayfish and waterway health.

Giant Spiny Crayfish Euastacus spinifer CREDIT BMCC Healthy Waterways Team

As part of the launch of the project, we’ve made some short videos about crayfish. These summarise the differences between our native spiny crayfish and yabbies, their importance, and some things you can do to help protect them. There’s also some great underwater shots of some beautiful Giant Spiny Crayfish (Euastacus spinifer). Check out the videos at Council’s youtube channel: https://www.youtube.com/user/BlueMtnsCityCouncil/videos

The Blue Mountains Crayfish Count is a project within iNaturalist. You can join the project and submit observations either through the iNaturalist website or app.  For more information go to https://inaturalist.ala.org.au/projects/blue-mountains-crayfish-count .

By collectively gathering more data on crayfish, this helps to get a better picture of the health of our crayfish populations, and in turn, the health of our waterways. It may also allow earlier detection of possible pollution incidents that are impacting on crayfish and waterway health.

Follow these simple steps to contribute to the crayfish count:

  1. Register for iNaturalist through the app or website
  2. Search for and join the Blue Mountains Crayfish Count project
  3. When you next see a crayfish, take a photo of it
  4. Upload the photo to iNaturalist (through the app or website), and add it to the Blue Mountains Crayfish Project.