Stream Temperature Monitoring Resources

Trout prefer cold water, often less than 65°F, and stream temperature has a strong influence on their well-being. TU restoration projects often target improving stream temperatures, and keeping a record of temperature variability and trends can be an important tool to help confirm the success of these efforts or identify where further work is needed. Waterproof data logging thermometers offer a simple, affordable means to fill this need. There are several resources available to help get you started with stream temperature monitoring:

A gentle introduction:

More detailed protocols:

Other web-based resources:

TU web-based mapping tools provide reference information – particularly trout and salmon distribution and existing monitoring locations - to help plan where to monitor:

Existing monitoring locations have been compiled by federal agencies here:


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