Welcome to Mississippi Valley Conservation Authority
Mississippi Valley Conservation Authority (MVCA) is one of 36 Conservation Authorities in Ontario. Formed in 1968, MVCA’s mandate is to manage the watershed’s resources in partnership with our eleven member municipalities and the Province of Ontario.
Draining over 250 lakes and wetlands, the Mississippi River watershed encompasses an area of 3,750 km² from its headwaters at Mazinaw Lake to its confluence at the Ottawa River. Together with the drainage areas of the Carp River, MVCA has a total jurisdiction of 4353 km².
Prevent Flood Damage To Your Home, Protect Local Wildlife, And Keep Your Drinking Water Clean
Protecting the needs of landowners and the environment by using an Integrated Approach to Watershed Management, MVCA works to keep your drinking water, local ecosystems, and your property safe. Let us help you reconnect with the natural environment by visiting locally significant areas, taking up stewardship practices at home or by monitoring your water quality.
Well below average spring flows could lead to lower than normal summer water levels throughout the watershed
APRIL 23, 2015 MISSISSIPPI VALLEY WATERSHED—Water levels across the watershed have peaked and are on the decline. This is the 3rd lowest spring peak flow recorded at the Appleton stream gauge since records began being maintained in 1918. With very little precipitation in the forecast over the next couple of weeks, water levels could be significantly lower than normal leading into the summer months, typically defined as the long weekend in May.
The majority of the snow pack that did exist across the Mississippi watershed disappeared through sublimation (going from a solid to a vapour) rather than melting which produces runoff to refill the lakes. As such, most of the upper lakes that are drawn down in the fall to store the spring runoff are significantly lower than normal at this time. MVCA will continue to operate the dams with the objective of reaching the normal target water levels by the end of May but will require substantial rainfall for those targets to be reached.
Historically, a low spring peak can be followed by a second peak in late May or June when rains occur. Although this cannot be determined at this time, residents should be aware that MVCA will be endeavouring to reach normal summer target levels and this could cause flooding to any docks installed prior to reaching those levels. Boaters should also be aware that there may be additional hazards on the lakes due to the lower water levels. Parents are reminded to advise their children about the dangers of playing near the rivers and creeks. Water temperatures are still cold and while flows are below normal, they are still high compared to summer conditions.
This Watershed Conditions Statement is valid through May 18, 2015. Additional statements will be issued when or if conditions are expected to change significantly from this outlook.
Daily water levels and flows are available on the MVCA website at www.mvc.on.ca.
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.
Contact: Gord Mountenay, C.E.T.
Water Management Supervisor
613-253-0006 ext. 233