There are hopes an irrigation project on the Murray will help re-establish black box woodlands and boost wildlife.
As part of Murray-Darling Basin reform, the Federal Government is acquiring water entitlements to return more water to the environment.
It has entrusted Nature Foundation South Australia with 50 gigalitres of water over five years.
Of that, 100 megalitres is being used to rejuvenate Clark's Floodplain, south of Berri in the South Australian Riverland.
Nature Foundation chief executive Ian Atkinson said the water would encourage growth of seedlings which had germinated in recent floods.
"The black box species is something that is on some of the high elevations along the river and it's certainly been suffering for a very long time," he said.
"We think it's a great example of what Craig Knowles, the chair of the Murray-Darling Basin Authority, was talking about when he talked about localism, in regards to the use of the environmental water asset that the Commonwealth now owns, so we think it's a great start."
Commonwealth environmental water holder, David Papps, said the project, on private land, would help achieve the Government's environmental objectives.
"We've got in place a set of arrangements to provide water to the large significant environmental wetlands across the Basin. What we potentially miss out on in that process is some of the small but very significant ones, particularly those on private land, and here's a fantastic example (of including one)," he said.