This data product contains soil chemistry data from 4 locations. Two of the locations were located in the Neversink River watershed near Claryville, NY (01435000) in the Catskill Mountains of New York (Fall Brook and Winnisook Creek), 1 of the locations was the Young Woman’s Creek watershed near Renovo, PA (01545600) and the last site was the Wild River watershed at Gilead, Maine (01054200). Soil chemistry was collected at 2 times at each location: in 2001 and 2011 in Fall Brook, Young Woman’s Creek and Wild River and in 1993 and 2012 in Winnisook. This data product also contains water-quality data from 5 water-quality stations: West Branch Neversink River at Winnisook Lake [01434021], East Branch Neversink River northeast of Denning [0143400680], Rondout Creek above Red Brook at Peekamoose [01364959], Biscuit Brook above Pigeon Brook at Frost Valley [01434025], Neversink River at Claryville [01435000]. The data were collected from water year 1992 to 2014. Stream water discharge is included with each water quality sample. For 3 of the stations (01434021, 0143400680, 01364959) discharge was discontinued in 2012. For those stations, discharge from 2012 to 2014 was estimated using linear regression analyses of nearby or downstream stations. The results of those regression analyses are also included in this data product.