North Branch Chicago River

First baseline test of season before snow starts. Always higher than I think it would be.

Certainly no snow for a while so no salting the roadways. And very little snow all winter. River still a little high from lots of recent rain, but much lower than it was. Seems like that would have washed out a lot of street residue. So still surprised how high the chloride level is.

Sunny. First cold day after 3 week stretch of way above average temperatures.

Nice day. Has not snowed recently. River level still dropping

Another big snow ending yesterday. Lots of salt spread on our local streets near the river. So chlorine should be increasing, and up 100 since last week!
Now very cold. Ice crystals forming on the river and condensing to slush. The banks are starting to freeze. Whole river should freeze over next couple of days

Just had a big snowfall and expecting another. River very high from the mixed snow and rain

Quiet on the river. No snow and not much rain since Halloween. Chlorine level same as October. Maybe baseline steady level.

Still a little surprised there is considerable chlorine in the water months after presumed last salt application. We are downstream from a golf course. Do any of the fertilizers contain chlorides?

So surprising that chloride level is still so high. Where is it coming from? I tested our tap water. Way below scale at 0.9, test strip scale starts at 1.4, 31ppm.

Water level coming down quite a bit. Everything turning a little green!