Mapping the Sylvan Lake Watershed

The SLWSS mission is simple: Protect the water quality of Sylvan Lake. To do so, it helps if we know what we are talking about. Due diligence for sound decision-making requires knowing lots of stuff.

And there is plenty to know about as publicly available data confirm.

Satellite and aerial images of the lake and the surrounding land are helpful to show the agricultural and urban environments that affect the state of the watershed.

Sylvan Lake Watershed Boundary.v2

Click to enlarge

The two major tributary catchments for Golf Course Creek and Northwest Creek are easily seen at high resolution. The boundary of the watershed is shown as a white line. The significance of that perimeter is that precipitation falling inside the line will potentially flow into the lake because of the contour of the terrain, carrying dissolved and suspended minerals, nutrients and contaminants with it. Note that the eastern section of the Town of Sylvan Lake lies outside the watershed boundary. Much of the stormwater, and all of the waste water, that is collected by the Town is diverted eastwards and out of the watershed.

Geographic Information System (GIS) software can consolidate and display layers of large sets of data as maps. The map below is a  multi-layer GIS graphic that contains several categories of data including the topography, roads, the Alberta township grid, two railway berms (that interfere with Golf Course Creek catchment flow and create a series of wetlands in the gully between the two), pipeline networks, plus the many regional tributary flows that are highlighted boldly in blue.

Watershed Master Map.v2

Click to enlarge

Protecting the lake and watershed starts with knowing the facts. The SLWSS, and the watershed municipalities, have the knowledge about land use and the surface and groundwater sources to do so.

 

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