Rainfall is scarce and the Namoi region is battling through some of the worst drought conditions.
A temporary water restriction for general security water users is now in place.
Lake Keepit and Split Rock Dams have not seen levels so low since the 1940s, with only 31 gigalitres of in-flow since August last year.
As of November 5th, Upper Namoi general security users can now only access 85-percent of the water held in their account.
Lower Namoi users can’t access orders placed after that date.