Henrys Fork near Ashton, ID (YHEN)
Henrys Fork near Ashton, Idaho (YHEN) 
Sample Collection: Samples were collected near the USGS stream gage 13046000 (Latitude 44°04'11",   Longitude 111°30'38"   NAD83). At the time of collection, all waters samples were filtered through a syringe filter (0.45-micrometer). Two splits of the filtered water were …