Flood warning update on Mississippi Watershed

Jeff Green | Apr 27, 2019

The Mississippi Valley Conservation Authority is issuing an update to the FLOOD WARNING for the entire MISSISSIPPI RIVER watershed issued April 25, 2019. 

Rainfall amounts between 10 and 20 mm fell across the watershed yesterday. While not having a significant impact on flood areas at this time, it has slowed down the rate of decline in many areas, particularly in the western portion of the watershed.

Mazinaw Lake / Little Marble / Marble Lakes:  Levels continue to drop but not as quickly as expected and remain extremely high. Winds could cause wave issues on these lakes and potential for shoreline erosion is high.

Kashwakamak, Mississagagon and Big Gull Lakes: Levels on these lakes are at or near all-time high levels but have been relatively stable over the last 24 hours and are expected to remain that way over the next 24 to 48 hours. Winds could cause wave issues on these lakes and potential for shoreline erosion is high.

Crotch Lake to High Falls: Crotch Lake increased slightly as a result of the rainfall but is expected to stabilize over the next 24 hours. It also remains very high and levels are not expected to begin dropping until late Sunday.

Snow Road / Dalhousie Lake: Continued high flows out of the upper watershed will cause levels in the Snow Road area to fluctuate over the next 48 to 72 hours as dams are operated to pass the water through that area. Water levels on Dalhousie Lake continue to increase and are currently projected to rise another 2 to 5 cm above the current elevation of 158.11 m. Winds could cause wave issues and potential for shoreline erosion is high.

Mississippi Lake: Levels have been stable over the last 36 hours and appear to be just beginning to recede. Inflows into the lake have been on a steady decline over the last 72 hours which is expected to continue but will be slow over the next 48 hours. Winds could cause wave issues on these lakes and potential for shoreline erosion is high.

Mississippi River downstream of Mississippi Lake:  Flows have been relatively stable over the last 36 hours. Levels and flows downstream of the lake are expected to continue to decline as the lake recedes.

Clyde and Fall Rivers: Flows are dropping steadily in both of these watersheds. The FLOOD WATCH is terminated for these watersheds