Monitoring the effectiveness of river realignment on the Upper Colorado River, Rocky Mountain National Park
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A 2003 debris flow introduced 36,000 m3 of sediment into a high-elevation wetland on the Upper Colorado River in Rocky Mountain National Park. In September 2015, Park staff built an earthen diversion dam and realigned a 190 m reach of the Colorado River into its historic thalweg through the center of Lulu City wetland. Initial dimensions of the constructed channel were 1.6 m wide and 0.4 m deep with an average bed slope of 1.9%. Pre- and post-restoration measurements are compared to assess the hydro-geomorphic response to the channel realignment within the adjacent wetland. The constructed ...