Dissolved Oxygen Requirements for Native Fish and Other Aquatic Life

Examples of Life

DO in parts per million

or milligrams per liter

Cold water organisms including salmon and trout (below 20 C)

 

Spawning, growth and well-being (caddis fly, stonefly, mayfly)

6 ppm and above

Warm-water organisms including game fish such as bass, crappie, catfish, and carp (above 20 C)

 

Growth and well being (some caddis fly)

5 ppm and above

 

Note: Pure, cold water can hold a maximum of 16 ppm under field conditions

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