IDP 2020-Environment

This set of graphics includes historical data on the environment of the Sylvan Lake watershed and surrounding Central Alberta. The quality and quantity of water in the watershed are critical factors that determine watershed value. Dissolved and suspended minerals and organics from the land are transported in surface and underground water into the lake and …

IDP 2020-Water Balance, Water Quantity and Water Quality Data

IDP 2020-Economics

The following graphics present Alberta Municipal Affairs data and provide an overview of land distribution, population, equalized assessments and revenue and expenses for the municipalities that are parties to the Inter-municipal Development Plan (IDP) that is now at the stage of preliminary consultation and due by 2020. Note that in each of those categories there …

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/

Dredging the Marina Bay Channel

The excavated channel from the yacht and powerboat harbour had gradually silted in over the last two decades. Suspended solids from the principle lake tributary Golf Course Creek that flows under Highway 11A, and those that migrate around the lake in the water column driven by wind and wave action, reduced the depth so that …

Sylvan Lake Precipitation 2018

This graph shows the precipitation history recorded by the Alberta Agriculture weather station at Hespero, west of Sylvan Lake from Jan 1 to November 13, 2018. The shortfall is 170 mm (0.17 m) of precipitation compared to the long term average. We assume that those observations at Hespero are representative of those for our watershed …

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 …