Gardner River near Mammoth (YGAR)
Gardner River near Mammoth (YGAR), Yellowstone National Park 
Sample Collection: Samples were collected four kilometers downstream from the USGS stream gage 06191000 (Latitude 45°01'2.4", Longitude 110°41'37.2"   NAD83). At the time of collection, all waters samples were filtered through a syringe filter …