This is a stormwater outfall. The connected "stream" is in a culvert or stormsewer pipe for part of its course, possibly from the Stoney Trail & Nose Hill Drive intersection.
Another site visit?

anything of public interest here?

add regional pathway & park

add regional pathway along almost full length of Symons Valley Parkway

path types and surfaces

add regional pathway

shouldn't this be some "link" type and drawn to follow actual path?

route shown for this path is crude approximation; it may be possible to improve it substantially using Calgary Open Data

southbound regional pathway starts about here; sidewalks north to start of northbound rp