If the water shortage worsens, a drought warning can be declared.
The state had already reduced the amount it was taking from the river in late last month when a drought warning was issued.
The state is still under a "drought warning," and officials are urging residents to continue to conserve water.
A drought warning, which is less severe, has been in effect since Jan. 27.
The commission's drought warning last week also affected a section of New Jersey, on paper at least.
When there is a drought warning, that supply is cut to 680 million gallons a day.
The city is now under a drought warning, which means that water levels are very low.
But a drought warning carries no mandatory curbs on water use.
"The drought warning has nothing to do with the public water resource."
Until then, the Northeast had unusually dry weather, and drought warnings were issued.