Upper Teton watershed, Idaho. Friends of the Teton River (a collaborative organization started by farmers, conservationists and agencies) will assess cutthroat trout populations in the upper headwater tributaries of the Teton River, and improve fishery habitat and water quality (by restoring eroding banks and in-stream spawning gravels, re-vegetating riparian areas and removing silt) on two Teton River spring-fed tributaries.