In December, the water in Big Rock Creek was still showing signs of human run off. This past month, the water was tested again and it was much purer than six weeks ago. Melted snow contains few if any dissolved minerals. After the snow melt, traces of ice melting chemicals were found but at low levels. The water quality right now is good. There is plenty of dissolved oxygen and for the first time in months, harmful bacteria were not detected! This doesn't mean you should drink it from the creek of course, but it's a nice illustration of how a natural environment can heal itself and the benefits of an urban park.
