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open-city / chicago-river-sewage

Is there sewage in the Chicago River?
http://istheresewageinthechicagoriver.com
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correlate CSO events with precipitation #8

Open derekeder opened 10 years ago

derekeder commented 10 years ago

Seems like a probable reason for CSO events is a certain amount of rainfall within a given period of time. Would be interesting to correlate these two and use rainfall as a predictor.

@fgregg feel free to add some thoughts here.

derekeder commented 10 years ago

Browsing around the MWRD website, they have another very useful page of precipitation measures for 12 rain gauges they control:

http://apps.mwrd.org/CSO/rain.aspx http://apps.mwrd.org/CSO/displayrain.aspx?passdate=1/11/2014

screen shot 2014-01-15 at 10 56 36 am

andreweskeclarke commented 10 years ago

Scraped that data, it goes back to 07/31/2006: c623942

andreweskeclarke commented 10 years ago

One thing I noticed, within basins, the measurements were pretty variant (just eyeballed, can look tomorrow at the stats). The average for the basin appeared more reliable.