NBMCA issued a Flood Warning on April 18, 2019, for our jurisdiction which remains in effect and today extended it to Wednesday, May 27, 2019.

Current Status (May 24, 2019 - 4 pm)

Conditions on Lake Nipissing and the Ottawa River at Mattawa are changing daily, currently dependent upon the amount of rain and runoff.  The inflows, from rain and runoff, are being continually monitored in relation to the outflow at dams within both systems.

Lake Nipissing is seeing a rise due to the rain that's recently fallen. Sustained wind and westerly wind gusts  added to the rise in water levels on the North Bay and Callander shorelines overnight Thursday. Levels and shoreline properties are still vulnerable to the impact of any significant rain events and westerly winds.   Lake and river inflows and dam outflows are being monitored and are expected to be adjusted today to help minimize the risk of significant increases in levels in the lake. 

The water level in the Ottawa River at Mattawa has resumed its slight downward trend, following the rise in response to the rainfall last week.

Approximately 13mm of precipitation is forecasted for tomorrow (Saturday) in the North Bay-Mattawa area, and there are two systems moving through the area early next week, although currently only minor precipitation is forecasted in the North Bay-Mattawa area from those systems.

Lake Nipissing (May 24, 2019 - 4 pm)     

As of this morning, the level on Lake Nipissing in the North Bay area, the gauge read 196.54m, whereas the gauge at the French River outlet on the Lake read 196.48m.  During yesterday's wind and weather system, the level briefly spiked to 196.59 due to strong sustained winds of 30km/hr and gusts up to 60km/hr from the west. There was another 5-10mm that fell over most of the watershed yesterday, much of the rain equated to runoff due to the intensity of rainfall and the saturation of the ground. 

There are a series of weather systems coming into the area over the next five days.   There is not a lot of rain in each individual system, but collectively there could be 25-40mm of rain over the next five days, falling on saturated ground which will increase runoff and inflow to the lake.  There is a chance of showers overnight of 1-3mm plus another 10-15mm tomorrow and another 15-20mm of rain spread through the week. Wind speed and direction continues to be a major factor in local water levels.

There is a strong potential that Lake Nipissing may exceed 196.59m over the next week, and the outflow at the French River dams is being reassessed on a continuous basis to help manage the inflow and flooding on Lake Nipissing and the French River.  Further increases to flows through the dams will be based on daily analysis of the current status of the lake and river and as agreed to by the Sturgeon-Nipissing-French-Wanapitei Water Management Group.

On Lake Nipissing, boaters are being urged to stay away from shorelines and flood-affected areas so that vessel movements do not pose a risk to the safety of individuals or cause damage to the environment, properties and infrastructure.

The Parks Creek Backflood Control Structure has been operating on Red Alert and pumping since May 2, to help mitigate flooding and sewer back-up for 350 homes in the Parks Creek neighbourhood.  The pump will remain in operation until Lake Nipissing’s water levels return to normal levels. 

Sand and sandbags are available to residents for the purpose of protecting their properties at Public Works on Franklin Street, but filling stations at Sunset Park at the end of Sunset Boulevard and Champlain Park at the end of Premier Road will no longer be operated. The City is prepared to ramp back up its resources at those sites if required.

Further increases to flows through the dams will be based on daily analysis of the current status of the Lake and River and as agreed to by Sturgeon-Nipissing-French-Wanapitei Water Management Group

You can view the current level on Lake Nipissing at North Bay on the graph below and the French River at the Water Survey of Canada (WSC) website.  Here. (Fluctuations in the levels today are a result of the strong winds affecting the movement of surface water) You can find the official flood warning statement about the watershed on our website News section on the homepage. 

Flood warnings for Ontario can be found on the Ontario Flood Forecasting and Warning website. Here

Mattawa River  (May 24, 2019 -  4 pm)

The Ottawa River at Mattawa is currently at 155.21m (metres above sea level). The water level has resumed its slight downward trend, following the rise in response to the rainfall last week.

The current forecast water level for the Ottawa River at the Town of Mattawa is 155.50m, forecasted to occur today, which is approximately 29cm (12 inches) above its current level, but the forecast is expected to move into the future.  Information about the most current forecasted peak water levels for the Ottawa River may be found at the Ottawa River Regulation Planning Board website:  http://www.ottawariver.ca/Forecast-2019.pdf

Substantial flow continues to be passed from Lake Temiskaming, however Lake Temiskaming is now beginning to trend down, which will result in a reduction of flows downstream including the Town of Mattawa. The release of water from the Ottawa River dams continue to impact the levels in the Mattawa River affecting properties in Mattawa, Mattawan Township and Papineau-Cameron Township along the river. A boating restriction is in effect for the Ottawa River and the Mattawa River downstream of the Hurdman Dam, and it is noted that safety booms have not yet been installed at the Hurdman Dam.

Due to the magnitude of this year’s flooding, Transport Canada has put navigation restrictions in place on the Ottawa River between the Otto Holden Dam and the Deux Montagnes Lake, and the Mattawa River between Hurdman Dam and the confluence of Mattawa River and Ottawa River. Navigation by non-emergency vessels is strictly prohibited. This includes pleasure craft and human-powered craft, such as canoes or kayaks.

Information about the most current forecasted water levels for the Ottawa River may be found at the Ottawa River Regulation Planning Board website: http://www.ottawariver.ca/Forecast-2019.pdf The current Ottawa River water level may be viewed at the Water Survey of Canada (WSC) website (note that there is a delay of several hours, and 100m should be added to the gauge reading for metres above sea level):

https://wateroffice.ec.gc.ca/report/real_time_e.html?stn=02JE013

The Town of Mattawa reports that sand and bags are available at their municipal public works yard, Municipal public works garage 1276 Mills St. Mattawa.  Volunteer assistance is welcome.  Municipal office 705-744-5611.  Boat traffic on the Mattawa River is now restricted below the Hurdman Dam to protect the shoreline and properties from wave damage.

The municipality provides updates on its Facebook Page @Mattawatownhall and its website .  Assistance for residents is outlined on the municipal website. 

The current Ottawa River water level may be viewed at the Water Survey of Canada (WSC) website (note that there is a delay of several hours, and 100m should be added to the gauge reading for metres above sea level):  Information about the most current forecasted peak water levels for the Ottawa River may be found at the Ottawa River Regulation Planning Board website.  

The Ottawa River Regulation Committee and the Ontario Power Generation which operates the Otto Holden Dam have provided information online regarding the management of water levels on the Ottawa River.   Ottawa River Bulletin May 12, 2019

 

Is your property at risk of flooding?

If you think that your property may be at risk of flooding, please contact your municipality.  

If you live in an unorganized township, contact Graham Mewett at Ministry of Natural Resources and Forestry District office at 705-475-5529.


Updates

For updates on the status of the Flood Warning, you can also follow us on  Facebook.   Twitter.   Instagram.

Please share photos of conditions in your area using #NBMCAFlood on all social media and include the location of the photograph.

Thank you.

 

Lake Nipissing Water Levels

Date Water Level (m)
2019-05-25 02:45:00 196.489
2019-05-25 02:40:00 196.486
2019-05-25 02:35:00 196.487
2019-05-25 02:30:00 196.484
2019-05-25 02:25:00 196.486
2019-05-25 02:20:00 196.483
2019-05-25 02:15:00 196.486
2019-05-25 02:10:00 196.485
2019-05-25 02:05:00 196.49
2019-05-25 02:00:00 196.492
2019-05-25 01:55:00 196.491
2019-05-25 01:50:00 196.491
2019-05-25 01:45:00 196.488
2019-05-25 01:40:00 196.486
2019-05-25 01:35:00 196.486
2019-05-25 01:30:00 196.483
2019-05-25 01:25:00 196.489
2019-05-25 01:20:00 196.484
2019-05-25 01:15:00 196.481
2019-05-25 01:10:00 196.481
2019-05-25 01:05:00 196.479
2019-05-25 01:00:00 196.477
2019-05-25 00:55:00 196.475
2019-05-25 00:50:00 196.475
2019-05-25 00:45:00 196.479
2019-05-25 00:40:00 196.479
2019-05-25 00:35:00 196.481
2019-05-25 00:30:00 196.484
2019-05-25 00:25:00 196.484
2019-05-25 00:20:00 196.487
2019-05-25 00:15:00 196.485
2019-05-25 00:10:00 196.487
2019-05-25 00:05:00 196.487
2019-05-25 00:00:00 196.489
2019-05-24 23:55:00 196.485
2019-05-24 23:50:00 196.485
2019-05-24 23:45:00 196.486
2019-05-24 23:40:00 196.487
2019-05-24 23:35:00 196.49
2019-05-24 23:30:00 196.493
2019-05-24 23:25:00 196.494
2019-05-24 23:20:00 196.49
2019-05-24 23:15:00 196.494
2019-05-24 23:10:00 196.491
2019-05-24 23:05:00 196.495
2019-05-24 23:00:00 196.491
2019-05-24 22:55:00 196.488
2019-05-24 22:50:00 196.492
2019-05-24 22:45:00 196.491
2019-05-24 22:40:00 196.49
2019-05-24 22:35:00 196.49
2019-05-24 22:30:00 196.49
2019-05-24 22:25:00 196.487
2019-05-24 22:20:00 196.489
2019-05-24 22:15:00 196.49
2019-05-24 22:10:00 196.489
2019-05-24 22:05:00 196.488
2019-05-24 22:00:00 196.484
2019-05-24 21:55:00 196.486
2019-05-24 21:50:00 196.484
2019-05-24 21:45:00 196.485
2019-05-24 21:40:00 196.483
2019-05-24 21:35:00 196.48
2019-05-24 21:30:00 196.48
2019-05-24 21:25:00 196.481
2019-05-24 21:20:00 196.483
2019-05-24 21:15:00 196.483
2019-05-24 21:10:00 196.486
2019-05-24 21:05:00 196.485
2019-05-24 21:00:00 196.483
2019-05-24 20:55:00 196.483
2019-05-24 20:50:00 196.485
2019-05-24 20:45:00 196.481
2019-05-24 20:40:00 196.484
2019-05-24 20:35:00 196.483
2019-05-24 20:30:00 196.483
2019-05-24 20:25:00 196.485
2019-05-24 20:20:00 196.485
2019-05-24 20:15:00 196.486
2019-05-24 20:10:00 196.485
2019-05-24 20:05:00 196.485
2019-05-24 20:00:00 196.484
2019-05-24 19:55:00 196.481
2019-05-24 19:50:00 196.486
2019-05-24 19:45:00 196.485
2019-05-24 19:40:00 196.488
2019-05-24 19:35:00 196.485
2019-05-24 19:30:00 196.487
2019-05-24 19:25:00 196.49
2019-05-24 19:20:00 196.486
2019-05-24 19:15:00 196.486
2019-05-24 19:10:00 196.486
2019-05-24 19:05:00 196.486
2019-05-24 19:00:00 196.486
2019-05-24 18:55:00 196.488
2019-05-24 18:50:00 196.486
2019-05-24 18:45:00 196.485
2019-05-24 18:40:00 196.484
2019-05-24 18:35:00 196.486
2019-05-24 18:30:00 196.488
2019-05-24 18:25:00 196.487
2019-05-24 18:20:00 196.49
2019-05-24 18:15:00 196.489
2019-05-24 18:10:00 196.487
2019-05-24 18:05:00 196.487
2019-05-24 18:00:00 196.484
2019-05-24 17:55:00 196.487
2019-05-24 17:50:00 196.486
2019-05-24 17:45:00 196.483
2019-05-24 17:40:00 196.487
2019-05-24 17:35:00 196.485
2019-05-24 17:30:00 196.486
2019-05-24 17:25:00 196.487
2019-05-24 17:20:00 196.487
2019-05-24 17:15:00 196.485
2019-05-24 17:10:00 196.486
2019-05-24 17:05:00 196.484
2019-05-24 17:00:00 196.486
2019-05-24 16:55:00 196.479
2019-05-24 16:50:00 196.486
2019-05-24 16:45:00 196.486
2019-05-24 16:40:00 196.482
2019-05-24 16:35:00 196.487
2019-05-24 16:30:00 196.486
2019-05-24 16:25:00 196.486
2019-05-24 16:20:00 196.484
2019-05-24 16:15:00 196.485
2019-05-24 16:10:00 196.486
2019-05-24 16:05:00 196.485
2019-05-24 16:00:00 196.486
2019-05-24 15:55:00 196.485
2019-05-24 15:50:00 196.483
2019-05-24 15:45:00 196.483
2019-05-24 15:40:00 196.486
2019-05-24 15:35:00 196.486
2019-05-24 15:30:00 196.489
2019-05-24 15:25:00 196.492
2019-05-24 15:20:00 196.491
2019-05-24 15:15:00 196.491
2019-05-24 15:10:00 196.49
2019-05-24 15:05:00 196.493
2019-05-24 15:00:00 196.491
2019-05-24 14:55:00 196.49
2019-05-24 14:50:00 196.492
2019-05-24 14:45:00 196.491
2019-05-24 14:40:00 196.491
2019-05-24 14:35:00 196.491
2019-05-24 14:30:00 196.493
2019-05-24 14:25:00 196.491
2019-05-24 14:20:00 196.492
2019-05-24 14:15:00 196.489
2019-05-24 14:10:00 196.493
2019-05-24 14:05:00 196.493
2019-05-24 14:00:00 196.491
2019-05-24 13:55:00 196.488
2019-05-24 13:50:00 196.488
2019-05-24 13:45:00 196.486
2019-05-24 13:40:00 196.486
2019-05-24 13:35:00 196.486
2019-05-24 13:30:00 196.485
2019-05-24 13:25:00 196.484
2019-05-24 13:20:00 196.482
2019-05-24 13:15:00 196.482
2019-05-24 13:10:00 196.48
2019-05-24 13:05:00 196.48
2019-05-24 13:00:00 196.478
2019-05-24 12:55:00 196.476
2019-05-24 12:50:00 196.483
2019-05-24 12:45:00 196.484
2019-05-24 12:40:00 196.485
2019-05-24 12:35:00 196.485
2019-05-24 12:30:00 196.488
2019-05-24 12:25:00 196.485
2019-05-24 12:20:00 196.485
2019-05-24 12:15:00 196.484
2019-05-24 12:10:00 196.484
2019-05-24 12:05:00 196.486
2019-05-24 12:00:00 196.49
2019-05-24 11:55:00 196.487
2019-05-24 11:50:00 196.489
2019-05-24 11:45:00 196.492
2019-05-24 11:40:00 196.493
2019-05-24 11:35:00 196.491
2019-05-24 11:30:00 196.492
2019-05-24 11:25:00 196.493
2019-05-24 11:20:00 196.496
2019-05-24 11:15:00 196.496
2019-05-24 11:10:00 196.496
2019-05-24 11:05:00 196.5
2019-05-24 11:00:00 196.499
2019-05-24 10:55:00 196.501
2019-05-24 10:50:00 196.5
2019-05-24 10:45:00 196.498
2019-05-24 10:40:00 196.497
2019-05-24 10:35:00 196.493
2019-05-24 10:30:00 196.495
2019-05-24 10:25:00 196.49
2019-05-24 10:20:00 196.488
2019-05-24 10:15:00 196.488
2019-05-24 10:10:00 196.488
2019-05-24 10:05:00 196.49
2019-05-24 10:00:00 196.487
2019-05-24 09:55:00 196.489
2019-05-24 09:50:00 196.486
2019-05-24 09:45:00 196.488
2019-05-24 09:40:00 196.488
2019-05-24 09:35:00 196.487
2019-05-24 09:30:00 196.487
2019-05-24 09:25:00 196.483
2019-05-24 09:20:00 196.483
2019-05-24 09:15:00 196.482
2019-05-24 09:10:00 196.479
2019-05-24 09:05:00 196.481
2019-05-24 09:00:00 196.481
2019-05-24 08:55:00 196.481
2019-05-24 08:50:00 196.488
2019-05-24 08:45:00 196.491
2019-05-24 08:40:00 196.493
2019-05-24 08:35:00 196.492
2019-05-24 08:30:00 196.49
2019-05-24 08:25:00 196.49
2019-05-24 08:20:00 196.489
2019-05-24 08:15:00 196.489
2019-05-24 08:10:00 196.489
2019-05-24 08:05:00 196.492
2019-05-24 08:00:00 196.497
2019-05-24 07:55:00 196.501
2019-05-24 07:50:00 196.498
2019-05-24 07:45:00 196.495
2019-05-24 07:40:00 196.497
2019-05-24 07:35:00 196.495
2019-05-24 07:30:00 196.495
2019-05-24 07:25:00 196.495
2019-05-24 07:20:00 196.494
2019-05-24 07:15:00 196.495
2019-05-24 07:10:00 196.495
2019-05-24 07:05:00 196.496
2019-05-24 07:00:00 196.499
2019-05-24 06:55:00 196.494
2019-05-24 06:50:00 196.494
2019-05-24 06:45:00 196.494
2019-05-24 06:40:00 196.493
2019-05-24 06:35:00 196.493
2019-05-24 06:30:00 196.49
2019-05-24 06:25:00 196.492
2019-05-24 06:20:00 196.49
2019-05-24 06:15:00 196.491
2019-05-24 06:10:00 196.492
2019-05-24 06:05:00 196.492
2019-05-24 06:00:00 196.489
2019-05-24 05:55:00 196.488
2019-05-24 05:50:00 196.491
2019-05-24 05:45:00 196.49
2019-05-24 05:40:00 196.488
2019-05-24 05:35:00 196.487
2019-05-24 05:30:00 196.487
2019-05-24 05:25:00 196.485
2019-05-24 05:20:00 196.484
2019-05-24 05:15:00 196.488
2019-05-24 05:10:00 196.484
2019-05-24 05:05:00 196.484
2019-05-24 05:00:00 196.483
2019-05-24 04:55:00 196.479
2019-05-24 04:50:00 196.482
2019-05-24 04:45:00 196.481
2019-05-24 04:40:00 196.482
2019-05-24 04:35:00 196.484
2019-05-24 04:30:00 196.48
2019-05-24 04:25:00 196.48
2019-05-24 04:20:00 196.481
2019-05-24 04:15:00 196.479
2019-05-24 04:10:00 196.476
2019-05-24 04:05:00 196.477
2019-05-24 04:00:00 196.476
2019-05-24 03:55:00 196.477
2019-05-24 03:50:00 196.478
2019-05-24 03:45:00 196.483
2019-05-24 03:40:00 196.486
2019-05-24 03:35:00 196.488
2019-05-24 03:30:00 196.488
2019-05-24 03:25:00 196.489
2019-05-24 03:20:00 196.491
2019-05-24 03:15:00 196.489
2019-05-24 03:10:00 196.489
2019-05-24 03:05:00 196.489
2019-05-24 03:00:00 196.49
2019-05-24 02:55:00 196.493
2019-05-24 02:50:00 196.492

Why the fluctuation in water level readings on Lake Nipissing?  Lake Nipissing can sometimes act like a bathtub, with water shifting in the lake, depending upon wind direction, speed and atmospheric pressure - known as a wind surge or seiche.  Now that the ice is off the lake, the water tends to move a little more.  At times the wind can have such an impact that it may result in the level being higher or lower at the French River gauge compared to the gauge located on the North Bay shoreline.  Seiche