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StL 1 IUN I - 5 I REAM UURRIDUR5 <br />Healthy Stream Corridors <br />Common in Colorado <br />Subalpine Stream Corridor - Characterized by steep slope <br />(greater than 4%) and V-shaped valley. <br />• Vertical erosion (little horizontal) <br />• Narrow floodplain and riparian area <br />• Narrow, deep channel <br />• Straight to slightly sinuous channel <br />• Often a series of descending pools <br />Typical Plant Associations: <br />Subalpine fir-Englemann spruce/Chimming bells <br />Subalpine fir-Englemann spruce/Drummond willow <br />Colorado blue spruce/Thin-leaf alder <br />Montane Stream Corridor - <br />Characterized by moderate slope (between <br />2-4%) and V-shaped valley. <br />• Vertical erosion (some horizontal) <br />• Narrow floodplains and riparian area <br />• Broad, shallow channel <br />• Straight to slightly sinuous channel <br />• Often with pools and riffles <br />Typical Plant Associations <br />Colorado blue spruce/Thin-leaf alder <br />Subalpine fir-Engleman spruce/Thin-leaf alder <br />Thin-leaf alder shrublands <br />River birch shrublands <br />18 <br />Boulder Creek in Boulder County <br />Joe Wright Creek in Larimer County