The property Pip Goldman's family has farmed for generations could soon be subject to flooding in five out of every 10 years.

That will be one flow-on effect from the NSW government's decision to allow environmental flows of up to 40,000 megalitres (ML) of water per day in the Murrumbidgee River, for a period of up to four days at a time.

Mapping done as part of the government's Reconnecting River Country Program shows more than 1,200 properties will be affected, including the Goldmans' low-lying land at Collingullie, near Wagga Wagga, in Southern NSW.

Mrs Goldman said although the river might only peak for a few days, the flooding would be enough to kill pastures, damage fences and bring weeds onto her land.

"It's devastating … they are taking our property rights,"

she said.

"At 40,

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