Maps below are interactive and show average summer temperature and dissolved oxygen during the months of July, August, and September. During these months, temperature and dissolved oxygen levels are often stressful for aquatic organisms.

• Click the top left corner to toggle between temperature and dissolved oxygen (click in the check box to layer turn on/off).

represent temperature

 represent dissolved oxygen 

*While in the "Legend", click the arrow to the far right of temperature or dissolved oxygen layers to see the full legend.*

• Click on the site icons to see the details at each site, including maximum water temperature, minimum dissolved oxygen, and the number of observations.
  • Remember: Conditions become stressful when temperature in cold-water fisheries reaches above 20ºC and dissolved oxygen below 6mg/L.