The Upper Thames River Conservation Authority has issued a flood warning and the city closed several roads due to rising water levels.

Drivers reported very slow commute times during this morning's commute, particularly for those travelling to London from areas west of the city.

City road closures

You may not recognize it, but this is the parking lot of the Grosvenor Street entrance to Gibbons Park. Look closely and you'll see the park's sign half submerged in water from the nearby Thames River. (Kate Dubinski/CBC)

The city is telling residents that there may be delays in their commute because of the closures.

"If there's a barricade on a road, please don't try to drive into any standing water or around any barricades," said Teresa Hollingsworth, a manager with the Upper Thames Conservation Authority. "The municipality is trying to keep you safe."

As of 2 p.m. today, the city closed the following roads:

Windermere Road between Doon Drive and Adelaide Street North.

Walnut Street, Cavendish Crescent and Wyatt Street

Empress Avenue between Argyle Street and Blackfriars Street.

Dingman Road between Old Victoria and Highbury Roads.

Westminster Road east of Wonderland Road.

Roads that have reopened:

Wonderland Road, north and southbound, at Riverside Drive.

Riverside Drive between Wharncliffe Road and Woodward Avenue.

Hamilton Road between Commissioners and Clarke Roads.

Third Street between Dundas Street and Parkhurst Avenue

Pine Street at Hume Street and Adelaide Street

Hume Street at Sycamore Street

Third Street between Dundas Street and Parkhurst Avenue and Pine Street at Hume Street and Adelaide Street were closed last night, but have since reopened.

Bus detours

Several cars are submerged as the city's waterways rise. (Kate Dubinski/CBC)

The London Transit Commission reported several bus detours on Wednesday due to flooding.

Some route affected include:

Routes 9, 20 - both eastbound and westbound routes

Route 10 - northbound

Route 19 - both westbound and eastbound routes

Route 32 - eastbound and westbound routes

More details can be found here.

On the lookout

A montage of some of the flooding in <a href="https://twitter.com/hashtag/Ldnont?src=hash&ref_src=twsrc%5Etfw">#Ldnont</a> today <a href="https://t.co/burWdl4N9g">pic.twitter.com/burWdl4N9g</a> —@KateDubinski

Residents are being asked to stay clear of Thames River. They're also being told to use caution around natural water bodies and storm water ponds

Flood coordinators continue to monitor the following locations in London:

Waubuno Creek

North Thames River

Parking lot adjacent to McNay Drain in North Thames floodplain

City pumping station in Elgin Hall parking lot

Gibbons Park, Harris Park and Coves Trailer park

Monitor City dyke system

Pottersburg Creek at Oxford Street

Thames River at Wellington and Front Streets

Dingman Creek

Western University: Elgin Hall and Talbot parking lots; Tennis Centre; Westminster residence

The city reports there is also a risk of flooding along Windermere Road, west of Adelaide Street.

The London Christian Academy on Charles Street is closed because of a power outage.

City warns of possible basement flooding

Floods caused problems throughout the morning Wednesday. This stairway is near Harris Park. (Kate Dubinski/CBC)

Meanwhile, the City of London is warning homeowners about the possibility of basement flooding.

The city's flooding tips include:

If you have a backwater valve and/or sump pump, ensure they are in good working order and are operational during this time.

Keep your drains unobstructed – do not pour grease down the drain or flush objects down the toilet.

Make sure downspouts slope away from the house.

Inspect your basement walls and floor for cracks.

Additional flooding resources are available here.

There's also these tips to minimize flooding damage.

Residents can make service calls about a basement or yard flooding by calling the City at 519-661-4570 between 8:30 a.m. – 4:30 p.m., or call 519-661-4965 after hours.