Ottawa River Regulation Planning Board | Ottawa River Regulation Planning Board

Time 2020-12-08 08:03:38

Web Name: Ottawa River Regulation Planning Board | Ottawa River Regulation Planning Board

WebSite: http://www.ottawariver.ca

ID:127368

Keywords:

River,Ottawa,Regulation,

Description:

Ottawa RiverRegulationPlanning BoardCommission de planificationde la régularisationde la rivière des Outaouais Ottawa River Regulation Planning Board The Planning Board was established to ensure integrated management of the principal reservoirs of the Ottawa River Basin:to minimize flood and drought impacts along the Ottawa River and its tributaries, particularly in the Montreal Regionwhile maintaining beneficial water uses in the basin. Water levels and flows on the main stem of the river between Gatineau-Ottawa and the Montreal region are beginning to increase due to rainfall received in the eastern and southern parts of the basin. Flows and levels are expected to further increase over the next few days. In the river reach upstream of Gatineau-Ottawa, water levels and flows should remain close to normal for this time of the year and be fairly stable over the coming week as precipitation received in this area is in the form of snow. Why high water levels are common during fall on the Ottawa RiverBecause of reduced evapotranspiration and increased precipitation during the fall, water level increases are common on the Ottawa River.In the fall, the soil capacity to absorb precipitation is less than in summer. This is because the vegetation, which has become dormant with trees having shed their leaves, is not intercepting rainfall or taking up the water contained in the soil. Such reduced evapotranspiration rates lead to rapid increases in water runoff to the river and increases in water levels.Operationally, as reservoirs are already full at this time of the year, all excess precipitation results in increased river flows that must necessarily pass through the system as there is no available storage. It should be noted that elevated water levels during the fall do not affect the ability to drawdown reservoirs over the winter period. Also, they are not a predictor of high water levels in the spring as illustrated in the document below.For more information about reservoirs drawdown, please refer to FAQ Question F Why is the water level on the Ottawa River not lowered sooner? Download document Expecting a notable increase in water levels and flows due to significant rainfall in Abitibi-Timiskaming Bulletins posted on 2020-10-23 by Ottawa River Regulating Committee The Ottawa River Regulation Committee would like to advise residents that a notable increase in water levels and flows isRead more This site uses cookies to provide you a great user experience. By using this website, you accept our use of cookies. x

TAGS:River Ottawa Regulation 

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