Just turn up at the Jewry Street weir, just off the bridge, and "we'll take anyone who wants to come and pick up rubbish with us", organiser Anne Michie said.

The site has been tended for many months by Tamworth Regional Landcare Association and OzFish Northwest NSW, and the day will also include tree-planting.

According to Tamworth Regional Council, 25 local business, community and school groups had registered for Clean Up Australia Day this year.

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All of them were open only to that group's members, except the Jewry Street site.

Ms Michie said the clean-up and tree-planting were part of ongoing work "trying to add some amenity back" to that area.

Previous work there has included removing rubbish from the river and banks, planting trees and installing a picnic table and benches.

"We planted 150 trees last clean-up day and just about all of them have survived," Ms Michie said.

"There's been a lot of TLC go into them - I've personally been down there watering them and so have other people - but they've made it, so we'll go again."

Among the other clean-ups tomorrow will be Tamworth firefighters on a section of Daruka Road - emergency call-outs permitting, and the Tamworth Queen of Country Music and Princess helping to tidy up Zonta Park.

Although the all-in Clean Up Australia Day is on Sunday, Business Clean Up Day was officially on Tuesday and Youth and Schools Clean Up Day was yesterday.

This year's campaign comes just months after the death of its founder, Ian Kiernan AO, at the age of 78.