City of Ottawa issued the following announcement on March 6.
The yellow parking fine boxes have been reinstalled at:
301 West Lafayette Street (Ottawa Police Department)
700 LaSalle Street (at Madison Street)
114 East Jefferson Street (at Columbus Street)
822 LaSalle Street (at Jackson Street)
Payments can be put in one of the fine boxes, the water bill drop box on Jackson Street or at City Hall, 301 West Madison Street. Payments can also be put in the drop slot on the east door (facing Clinton Street) at City Hall after hours.
Original source can be found here.