The first sampling date of the Friends of the Mad River's 2013 Mad River Watch season was Monday June 17th. Results from sampling show that E.coli levels at the 36 sites throughout the watershed were universally low. There were no samples that were above the state standard of 235 colonies/100mL. E.coli is an indicator of fecal contamination and elevated levels of E.coli in recreational water is associated with and increased risk of illness.
The water levels at the time of sampling were low and declining at 330 cubic feet per second (cfs - as measured at the USGS gage in Moretown); median flow value for this date is 117 cfs. The low results may be explained by the continuous rain and flushing of pollution from the land we have experienced this spring. Also, when the flow of the river declines after a rain, the contaminant levels also decline.
Results are posted at local swim holes and a complete listing can be found online at the Mad River Watch homepage and via a Google map.
Many thanks to our volunteers for their continued hard work!