A key component of any flow report is collecting accurate rain data.  Drnach Environmental currently maintains a network of rain gauges throughout the western Pennsylvania region. Tipping Bucket Rain gauges are used, which can be installed and downloaded by our field technicians and then integrated into our reports.  Clients may wish to utilize their own rain gauges, as long as they meet quality control guidelines. Information about our rain gauges (and others) can be found at
J & S Instruments, Inc. 

The data from our rain gauges for 2007, 2008, 2009, and
2010 is now available here.

An available 3rd party resource is the 3 Rivers Wet Weather Demonstration Program.  Any community located within the boundaries of this program can, if they choose, use the rain data provided on their website.

Below is a map of western Pennsylvania indicating the locations of our rain gauges.