The North Bay-Mattawa Conservation Authority is updating the potential for flooding in the area.
Officials say a flood warning continues for the Mattawa River subwatershed including the Town of Mattawa, while a flood watch continues for all other areas in the watershed.
A flood outlook is now in effect for the Lake Nipissing shoreline within the Conservation Authority’s watershed.
“A significant rainfall event is forecast to bring around 50 mm of precipitation from Saturday into Tuesday,” says Angela Mills, NBMCA Duty Officer. “As well, based on information from the Ottawa River Regulation Planning Board, there is an increase in outflow from reservoirs in the Abitibi-Timiskaming region. There is potential for further water level increases in both the Ottawa River and Mattawa River at the Town of Mattawa.”
Around the watershed, officials say with the ground saturated and water levels at or above normal, the levels of local creeks, rivers, and lakes are expected to increase.
Urban watercourses including Chippewa Creek may experience a quick rise in response to intense rainfall.
“The Lake Nipissing water level has increased by 29 cm since April 21,” says Chitra Gowda, NBMCA CAO. “The lake level is expected to increase further into early next week, with the forecasted significant rain event. Conditions are changing rapidly, and water levels may increase beyond what is forecast.”
The various updates are in effect until Wednesday, May 3.
