Cleaning out the pics on my phone… here’s a shot of workmen preparing the stream near our house for spring. The stream comes out from underground just next to our metro station (Hansung University station) — I assume it’s buried before there.
The stream probably drains most of our neighborhood, Seongbuk-dong, which is essentially a little bowl-shaped valley (see satellite view to the right… dotted-red line is roughly the ridge-tops, solid blue is the stream and dotted-blue is my guess for the original course of the stream).
I don’t know the name of the spring, but it’s a tributary of the mighty CheongGyeCheon — the fantastic stream that winds its way through a lot of central Seoul. Like CheongGyeCheon, “our” stream has paths along the side & gets a lot of pedestrian traffic. Very pleasant, both of them.