I met a guy in the forests of Canada who was riding around on an ATV with his dog close behind. We talked for a bit, he works in Forestry for the provincial go

I met a guy in the forests of Canada who was riding around on an ATV with his dog close behind. We talked for a bit, he works in Forestry for the provincial government there. He was going around gathering data from wireless water temperature logging devices, data which would enable analysis of the effect of logging and other extraction operations on trout migration patterns. He left me with a hot tip - versus the groundwater fed ones, surface-fed rivers are clear and cold, perfect for taking a dip on a hot July day.