. Assessment of aquatic macroinvertebrates in USFS / BLM Lands of the Crooked and Sage Creek Watersheds [electronic resource]. Bycatches; Bycatches (Fisheries); Evaluation. Crooked Creek (Mainstem Site YL S188 above Fish Barrier upper canyon) Ecoregion: Pryor/Bighorn Mountain Foothills Aquatic Ecological System Type: DOOly-Forested Headwater River Key Environmental Factors: Riparian Grazing—slight to moderate impacts upstream, but none in the immediate reach. Fire-killed trees on the steep canyon slopes within the reach may contribute to LWD additions to the stream for increased habitat comple
. Assessment of aquatic macroinvertebrates in USFS / BLM Lands of the Crooked and Sage Creek Watersheds [electronic resource]. Bycatches; Bycatches (Fisheries); Evaluation. Crooked Creek (Mainstem Site YL S188 above Fish Barrier upper canyon) Ecoregion: Pryor/Bighorn Mountain Foothills Aquatic Ecological System Type: DOOly-Forested Headwater River Key Environmental Factors: Riparian Grazing—slight to moderate impacts upstream, but none in the immediate reach. Fire-killed trees on the steep canyon slopes within the reach may contribute to LWD additions to the stream for increased habitat complexity. Rare or Unique Species: No rare SOC species, but abundant cold-water caddisfly, Rhyacophila hyalinata gr present in the samples Rare Features: No rare features documented Introduced/Exotic Aquatic Species: None Overall Ecological Site Condition: Good to Excellent Reach Summary: This stream reach has moderate quality instream aquatic habitat with some boulder drop pools and LWD overhangs. Livestock use index (LUI) was zero, with no livestock able to access this site in the canyon. Riparian Ranking: BLM= 92% (22 of 24) Proper Functioning Condition (PFC) Reach Riparian Geomorphology: The geomorphology of this stream reach is a Rosgen B-3 with a medium gradient (2 %), moderate sinuosity, a riffle dominated configuration with substrate dominated by cobble/boulders and pebble runs. Pools are small-largely absent averaged >30 cm in depth, average wetted width of the reach was Macroinvertebrate Community: This excellent quality community is dominated by the Traditional Trout Stream Assemblage (#90, Stagliano 2005) and members of the Small Foothills Transitional Assemblage (#105, Stagliano 2005), overall a diverse macroinvertebrate assemblage with 11 coldwater obligate taxa. Macroinvertebrate Community Quality: DEQ MMI= Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appear
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