The upper and lower Namoi was at stage 4 (critical) level, but after recent rain this has dropped to stage 3 (severe).

According to the NSW Department of Planning, Industry and Environment's (DPIE) most recent water allocation statement for the Namoi, "critical requirements are now secure with improved connectivity".

"Limited delivery to general security water is being met from the recent river flow," the statement said.

But the improvement is "insufficient to increase the current water allocations at this time".

"As a result, upper and lower Namoi general security allocation this water year remains unchanged at zero per cent and upper and lower Namoi high security allocation remains at 75 percent of entitlement," the statement said.

The regulated river water sources did receive "very much above average rainfall during February", but this could cease in coming months, the DPI wrote.

"The upper catchment received about 100 to 200 mm of rain, resulting in relatively good inflows to the upper storages of about 55 gigalitres (GL). The wet weather more than halves the resource shortfall from 95GL to 43GL.

"The Bureau of Meteorology seasonal outlook for March to May indicates that the chances of a wetter or drier than average autumn (March to May) are roughly equal for the Namoi catchment.

"Both daytime and night-time temperatures over this period are likely and very likely (respectively) to be above average."

Information on current restrictions can be found on the DPIE website.

Further information on drought stages can also be found on this website.