Here’s How Sylvan Lake has Changed Over Two Decades

This is a preview slideshow of the weather and lake level data. Explanations to follow soon.

Sylvan Lake Winter 2018-19

Here is the temperature record from the Alberta Agriculture Hespero and Red Deer Airport weather stations since November 01 compared to the long term average: February has been about 12-14 C below the long term average. Lake ice should be thicker and the ice-free season shorter than usual.

Sylvan Lake Watershed Review 2018

SLWSS president Graeme Strathdee's Society report for 2018 follows: The President’s Annual Report for 2018 State of the Watershed Update The focus of our Society’s stewardship initiatives is on the state of the watershed within the red-line hydrological boundary shown in this consolidated topographical and bathymetric GIS map. In 2018 the Society collected data on Sylvan …

Water and Groundwater Maps for the Edmonton to Calgary Corridor

See this previous post on the same topic that used old WordPress technology: https://slwssnews.wordpress.com/2017/12/10/sylvan-lake-watershed-groundwater-review/

Air Temperatures and Solar Radiation Affect When the Ice Leaves the Lake

See how winter air temperatures determine the date on which Sylvan Lake becomes free of ice in April or May. There's no surprise: Cold winters mean thicker ice and a later ice-free date. Ice-free dates (the red arrows) are from the archives of SLWSS Director Susan Samson. Graphics were created using the Alberta Agriculture Weather …

Important News from the ALMS 2018 Workshop at Buffalo Lake

Three presentations at the Alberta Lake Management Society annual workshop held at Buffalo Lake on September 28 and 29 were particularly important for our Sylvan Lake watershed. First, see some Buffalo Lake  history here. Now, click on the links below to view the authors' presentation graphics: Dr. Judy Stewart, ALMS Loving our Lakeshores to death! …

UPDATE: Sylvan Lake Level 2018

This graph shows the lake level data measured continuously by Environment Canada after May 1.   Without significant precipitation and tributary discharge from watershed land into the lake through the summer months, about 10.92 million tonnes of water disappeared by evaporation from the lake surface. That is why the lake level dropped by about 0.26 …