Water Quality Impacts: Point Source

In the short videos on the next several pages, Matt Vincent illustrates impacts to water quality at several different western Montana sites, starting with point source impacts. Right-click or ctrl-click this link to download.   In this short video, Matt Vincent illustrates a second type of point source impact to water quality. Right-click or ctrl-click […]

Water Quality Parameters: Dissolved Oxygen

Dissolved oxygen, often referred to as DO, is simply the amount of oxygen that is dissolved in the water. It is measured in mg/L or ppm and is correlated with the water’s temperature to give a % saturation. When DO levels fall below 8 or 9, most trout and oxygen-sensitive aquatic insect populations like stoneflies […]