Sample Notes 



Cut Bank Creek. The sample collected below the USGS gage was almost free of silt. 

 The sample collected at Quick Silver Resources contained macrophytes and some silt and 

 particulate organic matter. The sample collected near the mouth was silty. 



Old Maids Coulee. The sample collected below the highway was silty and contained 

 macrophytes. The sample collected near the mouth was very silty and also contained 

 macrophytes. 



Two Medicine River. The sample from the upper site on the South Fork of the Two 

 Medicine River was almost free of silt. The sample from the downstream site on the South Fork 

 was very silty, as was the sample from the Two Medicine River near the mouth. 



Birch Creek. The sample from the South Fork of Birch Creek was silty. Samples from 

 the lower three sites on Birch Creek were partly decomposed (smelled of H2S). Samples 

 collected from the lower two sites contained macrophytes. 



Dupuyer Creek. The samples from the North and South Forks of Dupuyer Creek were 

 silty and partly decomposed (smelled of H2S). Samples collected from the main stem of 

 Dupuyer Creek contained either macrophytes (Anderson Ranch) or plant roots (lower two sites). 

 Samples from the lower two sites were silty, and the sample collected from near the mouth of 

 Dupuyer Creek was partly decomposed and contained living protozoans. 



Non-Diatom Algae 



Cut Bank Creek. Diatoms and filamentous green algae {Cladophora) dominated the 

 periphyton samples collected from Cut Bank Creek (Table 4). Cyanobacteria (blue-green algae) 

 were common to abundant at all three sites on Cut Bank Creek. Euglena, an indicator of organic 

 pollution, was rare at the upstream site. Each site supported 1 1 genera of non-diatom algae. 



