STUDY NUMBER ; 5.1 



ORGANIZATION ; United States Forest Service (USFS) 



TITLE OF STUDY : Stream Sediment Monitoring on National 

 Forest Lands 



CONTACTS ; Mike Goggin, Region I USFS, Missoula - 329-3039 

 Mike Johnson, Region I USFS, Missoula - 329-3516 

 Don Bartschi, Region I USFS, Missoula - 329-3511 

 Greg Munther, Lolo, Deer Lodge and Bitterroot 

 National Forests, Missoula - 329-3793 



OBJECTIVE ; Monitor sediment deposition impacts to fish and 

 other aquatic life resulting from National Forest construc- 

 tion and development activities. 



DURATION ; 1975 - Indefinitely 



CURRENT STATUS ; All or a portion of seven national forests 

 are within the Clark Fork River Basin. Forest fishery- 

 biologists and hydrologists routinely collect bottom sediment 

 and some suspended sediment samples from streams where 

 forest-permitted activities like logging and road construc- 

 tion have occurred or are planned to occur. Various sediment 

 deposition measurements are utilized, including core sampl- 

 ing, embeddedness , surface visual analysis and washed 

 sediment buckets. The latter method involves placing washed 

 gravel and cobbles in a sampling device of known surface area 

 and volume; this method is particularly useful in evaluating 

 upstream versus downstream impacts resulting from instreeim 

 activity. Bethnic macroinvertebrates are is also usually 

 collected at the sediment sampling sites. 



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