Emergency services have received more than 200 calls for help from Canberrans hit by Sunday's deluge.
Canberra received more than February's average rainfall on Sunday. It recorded 66.2mm by 2pm, compared with the average rainfall in Canberra for February of 51.2mm. Some parts of the city were hit by more than 60mm in just a few hours.
It caused flash flooding in parts of the city and forced several roads to close.
Police are pleading with Canberrans to drive to the conditions, and avoid flooded areas.
The Bureau of Meteorology cancelled its severe thunderstorm warning about 1.20pm, after first issuing it about 9.15am.
In the three hours to 10.45am, the bureau recorded 66.2mm at Woolshed Creek, 43mm at Oaks Estate and 39.2mm at the boat harbour on Lake Burley Griffin.
The ACT Emergency Services Agency said storm water levels would continue to rise, as further rain was expected.
"Avoid entering storm waters and don't allow children to play in, or near storm waters. Please avoid driving on unsealed roads," it said in a statement.
"Do not drive into flood waters. If driving becomes too difficult pull over safely to the side of the road and wait until conditions improve.
"The public are also advise to keep clear of waterways, which are likely to experience flash flooding in current conditions. When flooded waterways can become unpredictable and dangerous."
Authorities temporarily closed several roads, including Macarthur Avenue in O'Connor and Brigalow Street in Lyneham, and Majura Road, but they are now reopened. Oaks Estate low-level crossing remains closed until further notice.
Authorities also advise people avoid the following areas, which have been affected by storm water or debris.
- Pedestrian underpass Ginninderra Drive and Kingsford Smith, Melba
- Coppins Crossing, Molonglo River
- Coppins Crossing, Denman Prospect
ACTION buses were diverted in the inner north for much of the day. Services returned to normal about 4pm.
"Patrons can expect delays. We apologise for any inconvenience," it said in a statement on Sunday morning.
The flooding also closed Dickson Library, and the Australian National University has cancelled all classes and events on Monday.
"The closure is to ensure the safety of all students and staff as the university conducts essential safety checks on infrastructure including bridges, creek banks and electrical switchboards," the university said.
ANU libraries will be closed and students have been told not to come to campus. Residential students were advised to stay away from affected areas, and staff should only come to campus if requested to do so for essential work.
"The university is experiencing significant flooding and power interruptions across the campus," it said in a note to students.
"The university has temporarily closed the area between Sullivans Creek Road and Melville Hall including the Chifley Library and ovals and grounds. Please keep clear of swollen waterways and do not enter flood water or creeks," the note said on Sunday.
On Sunday evening, the ESA advised several locations had been reopened to the public:
- Kingsford Smith Drive Southbound, Higgins
- Thurbon Road, Lyneham
- The intersection of London Circuit and Edinburgh Avenue, Civic
- Majura Road from Tambreet Street to Mustang Avenue
- Hackett Gardens, Bolderwood Street, Turner
While the following roads remained closed:
- Oaks Estate Road
- Coppins Crossing, Molonglo Valley
- Coppins Crossing, Denman Prospect
- Pedestrian Underpass Ginninderra Drive and Kingsford Smith, Melba
Drivers have been advised to avoid storm water affected areas at Northbourne Avenue and the intersection of Barry Drive, and Sherbrooke Street, Ainslie.
Several rural roads in the territory are also closed:
- Corin Road from the Woods Reserve locked gate
- Sunshine Crossing
- Angle Crossing
- The unsealed section of Boboyan Road (except four wheel drive vehicles)
- The unsealed section of Brindabella Road (except four wheel drive vehicles)
- Mount Franklin Road at Bulls Head
- Bendora Road
- Warks Road
- Booroomba Rocks Road
- Orroral Ridge Road
- Corin Road from Square Rock car park.
- Apollo Road
- All unsealed roads off the Paddy's River Road
- All unsealed roads off the Brindabella Road
While another downpour of this size is not being forecast, the rain is not quite ready to go away.
The bureau is forecasting a 60 per cent chance of another shower on Monday, although it is only expecting up to 6mm. It's predicting some drier days after that, before there's a 50-50 chance the rain returns on Friday and Saturday.
For assistance during storms and flood call 132 500. For life-threatening emergencies call Emergency Triple Zero (000).
The State Emergency Service advises people should:
- Keep clear of creeks and storm drains.
- Don't walk, ride your bike or drive through flood water.
- If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
- Unplug computers and appliances.
- Avoid using the phone during the storm.
- Stay indoors away from windows, and keep children and pets indoors as well.
- For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.