City of Ottawa issued the following announcement on May 2.
Due to flooding the following areas are closed
until further notice:
Green Street
Allen Park
Champlain Street at aqueduct
Fox River Park
East Main Park is closed at Main Street
Riverwalk
Albin Stephen’s Drive
Hudson Street
St. George Street
Division Street at Washington Street
St. Claire Street at St. George Street
Original source can be found here.