Re: FLOOD WARNING – MISSISSIPPI VALLEY WATERSHED – Update #1 May 7, 2017
May 7, 2017 MISSISSIPPI VALLEY WATERSHED—Mississippi Valley Conservation Authority (MVCA) is updating the FLOOD WARNING issued May 6, 2017 for the Mississippi River from Mazinaw Lake downstream to Dalhousie Lake, to include the entire watershed.
Continued rainfall yesterday has resulted in levels and flows across the watershed to continue to climb. The majority of the upper lakes in the system are at or nearing historical high water conditions. Levels on Dalhousie Lake have increased 30 cm since yesterday and are expected to increase 10 to 30 cm over the next 24 to 36 hours. Flows on the Clyde River have also increased and are expected to reach or slightly exceed those encountered earlier this spring. The Clyde River is expected to peak late Monday or Tuesday depending on how much rainfall occurs today. It appears that the Carp River has peaked and flows are expected to steadily decline over the next week. Levels on Mississippi Lake and downstream are expected to be slightly higher than the peak reached earlier this year and are not expected to peak until Thursday or Friday. Residents should expect levels on the lake to increase by 30 to 50 cm over that time frame. With the amount of water currently in the upper reaches of the watershed, residents are advised that it is expected to take at least 3 weeks for conditions to return to more normal levels and any rainfall over that time frame may exacerbate the situation.
Residents are being advised to stay away from watercourses where flows are high and where banks might be unstable. Parents are encouraged to explain these dangers to their children.
The FLOOD WARNING for the Ottawa River and this FLOOD WARNING update for now the entire Mississippi Valley watershed are valid through May 9, 2017. Additional statements will be issued when or if conditions are expected to change significantly from this outlook.
Only if it is safe to do so, the public is encouraged to share photos of water conditions in their area via MVCA Facebook (Mississippi Valley Conservation Authority) and Twitter (@MVCAuthority).
For more information regarding the Ottawa River, visit www.ottawariver.ca. Daily water levels and flows for the Mississippi Valley watershed are available on the MVCA website at http://mvc.on.ca/water-levels/.
The Mississippi Valley Conservation Authority flood forecasting and warning program monitors weather conditions, snowpack water content, estimates expected river flows and water levels and issues flood advisories or warnings as required. MVCA provides early warning and continuous monitoring to municipal and provincial emergency response personnel through a flood event.
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Community Relations Coordinator
613-253-0006 ext. 225