Sunday's Carp Muster has had a huge turnout with 70 people registered and another 20 showing up on the day.

The muster was brought to Canowindra by a collaboration between OzFish, Canowindra Connections Centre, Mid Lachlan Landcare and Cabonne Shire Council.

This was funded as part of local Youth Week activities, with Cabonne Council's Stacy Whiley describing it as a great opportunity to work with local community groups and people within the community as well as encouraging people to get outside.

Canowindra Connections' Jacquie Dredge said they wanted to come up an idea for kids activities in the winter holidays, and fishing locally was a good start.

Ms Dredge said it was nice to see families out and about along the river and not on devices.

Mid Lachlan Landcare's Tracey Burke said the day was pretty amazing with a great turnout.

As part of the Carp Muster, participants were encouraged to collect 50 pieces of rubbish to be able to enter the fishing competitions which included biggest carp caught and most fish caught.

Ms Dredge said the clean up alone makes a huge difference.

While there were not as many fish caught as expected by the end of the day, participants and members of Landcare had collected a whopping 30 80kg bags of rubbish.

OzFish coordinator Sean Graham said Canowindra had bucked the trend in this, with not only the anglers doing their bit to clean up the river surrounds but members of Mid Lachlan Landcare who weren't even fishing joining the effort.

The largest fish measured in around 75cm, Mr Graham said, and they had winners in the Under 12s category, 12 to 17s category and three people tied in the most rubbish collected category.

Mr Graham said carp musters are about educating people about helping improve river health and some of the issues facing local rivers.

The carp which were caught were also added in a locally made fertilizer mix which will be used on a property locally.

Members of Landcare created the fertiliser mix from rice water, milk and molasses which the carp was then added to.

Landcare's Tracey Burke said the aim of that was to make the carp into something which can help the environment.

With a background in chemistry, Mid Lachlan Landcare's Amanda Foxon-Hill said when she found out they could make their own fish fertiliser she found it to be very interesting.

Ms Foxon-Hill said the fertiliser mix breaks down the fish and helps it to not smell nearly as bad.

This process will take between four and six weeks, and the fertiliser will be sprayed on a local property when it is ready.

Ms Foxon-Hill this is a bit of an experiment and she got the idea from a Mudgee Watershed workshop.

They will do a chemical analysis of the fertiliser and its nutrients, and how the whole process went.