Sherman County Area Watershed Council
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​Temperature Monitoring Lower Grass Valley Canyon 

Landowner: BLM 
Time frame: spring 2020- fall 2025 

We installed a temperature logger in Lower Grass Valley Canyon to measure summer stream temperature. The logger will be in the stream from May to October for 5 years. This will give us baseline data on stream temperature. 

Lower Grass Valley Canyon is listed on the EPA list for water quality limited streams because of high summer stream temperature. Most streams in the Lower John Day basin are water quality limited for temperature, primarily due to severe erosion and loss of riparian vegetation after the 1964 flood. High temperatures can kill spawning salmonids and other fish species. Stream temperatures can be decreased by increasing the water table height through installing in-stream structures to slow the water in the winter and planting riparian trees such as willow and cottonwood. 
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In-stream Structure and Riparian Planting 

Want to increase the amount of water you have in the summer, increase native stream side vegetation, reduce fire risk, and improve fish populations, all for a low cost? Beaver dam analogs (BDAs) and similar in-stream structures are low-cost, effective methods to slow water, increase water storage in the winter, and improve stream flow in the summer. In-stream structures raise the water table by slowing water and allowing more percolation. This raised water table allows you to grow more riparian trees and shrubs for erosion control, stream shading, and wildlife use. This doesn't involve adding beaver to the streams. They simply act in similar ways to beaver dams did in the past. Our streams, ecosystems, and wildlife evolved with beaver dams and we need to bring these structures to improve the in-stream and floodplain ecosystems for landowners, livestock, and wildlife. 
Types of Projects 
In-stream structure installation 
Riparian planting
Riparian fencing
Off-stream watering facilities
Noxious weed treatment 
And more! 
Riparian Projects