Site Description 



Crooked Creek (tributary to the North Fork Grand) 



Figure 37. Crooked Creek (AES COOS) 

 looking upstream near Cox Church 



Location: Accessed from County Rd. 733 @ Cox Church, 7 miles west of Rt 85, -20 miles north of 

 Buffalo. 



Nearest Town: Buffalo, Harding County, SD 



Ecoregion: Northern Great Plains Steppe 



Aquatic Ecological System Type: C005-Northwestem Great Plains Perennial Stream, but due to 

 reduced hydrology from upstream dams, trending towards a D005 Northwestern Great Plains Intermittent 

 Stream 



Key Environmental Factors: Hydrology — upstream and downstream dams in the watershed; Oil and 

 gas drilling in the watershed; Grazing — slight impacts 



Rare or Unique Species: No rare species documented 



Rare Features: No rare features documented 



Introduced/Exotic Species: Black bullhead & green sunfish (rare, not abundant) 



Overall Ecological Site Condition: Fair/Good 



Reach Summary: The 1 00 m reach consisted of 1 run/pool complex with the pool being ~90m long and 

 fairly incised (Figure 37). This site contains no riffle or erosional areas decreasing the ability to provide 

 habitat for other C005 fish species. The stream reach has decent aquatic habitat and is set in a quality 



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