Wednesday, 15 March 2017 14:28

Water Security Agency releases March forecast

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The Water Security Agency released the March 2017 Spring Runoff Forecast.  


The majority of Saskatchewan is looking at near normal spring runoff with the exception of southeastern Saskatchewan and areas west of Hudson Bay which is expect above normal flows.
The two areas of concern are in the extreme southeast corner of the province where above normal snowfall and wetter-than-normal fall moisture conditions are creating an above normal runoff potential. The heaviest snowpack is located below Rafferty and Alameda reservoirs and near the Manitoba border. This is also an area that was wetter than normal at freeze-up in 2016.
Unless conditions are favourable leading up to and during the spring melt, well above normal flows are expected.
The recent snowstorm this week will add slightly to these areas but not have a major impact. While out-of-channel flows are expected, significant flood damages are not expected unless conditions significantly change leading up to and/or during the spring melt.
The other area of concern is the Red Deer River Basin located southwest of Hudson Bay.  Well above normal moisture conditions in the fall of 2016 combined with a near normal snowpack is expected to result in above normal flows on the Red Deer River.
Much of the province experienced well above seasonal temperature episodes in January and February resulting in snowmelt and runoff in February. The area south of Biggar and west of Avonlea saw the complete melt of the snowpack in mid-February. Snowmelt runoff is either completed or nearing completion within this area.
With a mountain snowpack that is currently near normal, conditions are expected to be near normal throughout the Saskatchewan River System over the next six months, assuming normal conditions going forward.
While Lake Diefenbaker is currently at an above normal level for this time of year, it will be returned to near normal levels prior to the end of May.
While below normal or near normal runoff has been observed or is expected over a large portion of the province, most water supply reservoirs were at or above normal levels in the fall of 2016.
Consequently, surface water supplies across the province are expected to be adequate in 2017. Reservoirs which were below normal levels in 2016, namely Nickel Lake and Boundary Reservoir, are expected to be replenished by snowmelt runoff.
Water Security Agency will continue to monitor the 2017 spring runoff conditions across Saskatchewan, which may include further targeted snow surveys to verify snow accumulations. If warranted, further updates will be issued as the spring runoff progresses.
For more stream flows and lake levels information visit www.wsask.ca.

Read 738 times Last modified on Wednesday, 15 March 2017 14:32
Matthew Liebenberg

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