Rare or Unique Species: No rare species, but giant floater mussel shells were documented. 



Rare Features: No rare features documented. 



Introduced/Exotic Species: Black bullhead, carp and green sunfish 



Overall Ecological Site Condition: Good 



Reach Summary: The 300 m reach consisted of 2 riffle/run/pool complexes with full flowing water 

 connectivity. The lower pool was ~50m long (averaged 0.75m deep) and contained the deepest fish 

 holding habitat. This stream reach has good aquatic habitat and a diversity of microhabitats, thus leading 

 to high fish species diversity (14 species, 1 1 native), although an abundance & dominance of introduced 

 species. Pools averaging 25-40m long and 8- 10m wide. All substrate of the upper pool was gravel/silt 

 dominated with some cobbles, and pool #2 was dominated by silt & gravel. Aquatic geomorphic 

 structures and overhanging banks at the margins provided most fish habitat in this stream reach. Riparian 

 vegetation coverage was dominated by shrubs & some willows on the immediate riparian bank with 

 cottonwoods along the 2nd tier riparian area. Livestock use index (LUI) was low with only ~7 cow pies 

 counted on a 75m walk of the left and right banks. 



Reach Habitat Ranking: BLM= 95.8% (23 of 24) EPA RBP= 94% (188 of 200) 



Reach Riparian Geomorphology: The geomorphology of this stream reach is a Rosgen F-4 with a 

 gentle-medium slope (-1%), moderate sinuosity, riffle-pool configuration with substrate dominated by 

 gravel and sand/silt dominated pools. Pools are slightly incised and averaged >40 cm in depth.. Wetted 

 width of the reach was 9.8m. Surrounding bank materials are finer than the channel bed materials 

 indicating no in-stream accumulation of sediments. 



Amphibian Community: 1 adult Northern Leopard Frog (NLF) present. 



Fish Community: 14 fish species ( 1 1 native) were seined in the 2 riffle/run/pools. Dominant species 

 were sand shiners, black bullheads and green sunfish. Expected dominant fish species for this stream type 

 would have included flathead chubs, sand shiners, western silvery and plains minnows and fewer 

 introduced species. Although most fish species expected are present and there were a good number of 

 river carpsuckers which helped the IBl score. Presence of abundant non-natives (black bullheads and 

 green sunfish) has shifted the IBl score lower than it would have been, but overall a good fish community. 



Fish Community Quality: 1BI= 88.05 0/E= 1 1/1 1 or 100% of the expected fish community. 



Macroinvertebrate Community: This community consists of the Filtering Collector, Prairie Stream 

 and Large Prairie River assemblage of macroinvertebrates (#9, 1 1, 37 Stagliano 2005). Over 80% of the 

 indicator species expected were present in this sample. 



Macroinvertebrate Community Quality: MT MMI= 62.5 0/E= >80%. 



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