Residents are invited to take part in a Day of Action next week to fight for the Darling River and Menindee Lakes.
Councillors voted in favour of the event at the Ordinary Meeting of Council in August.
The event will see participants take part in a protest march from Town Square to Sturt Park, followed by speeches from invited guests.
Mayor Darriea Turley said the day would provide locals with an opportunity to stand in solidarity and demand improved management of the region's waterways.
"The state of the Darling and the Menindee Lakes is an absolute tragedy, and it's not an issue that locals are simply going to forget about," she said.
"The arrival of the Wentworth to Broken Hill pipeline doesn't spell the end of the fight for the river and the lakes.
"This is a chance to show the Government that the health of our waterways will always be a priority for this community."
She said the event would also provide a range of speakers with the chance address the Broken Hill public on the pressing issue of water.
"We've sent invites to politicians, political candidates, water activists, indigenous elders, and many other people who we hope will provide valuable insight and input on the problems affecting our waterways," she said.
"This will be a perfect chance for them to speak formally or informally with locals on an issue that has now grown to national significance.
"I look forward to seeing you all there. Bring your signs, bring your banners, and let's keep fighting for everyone affected by the parlous state of our lakes and river."
Participants are invited to gather at Town Square by 11am on 3 November to begin the march to Sturt Park.