Geomorphic Response of Fall River Following the Lawn Lake Flood, Rocky Mountain National Park, Colorado.
Final rept. 15 Apr 85-14 Apr 87,
COLORADO STATE UNIV FORT COLLINS DEPT OF EARTH RESOURCES
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Following the Lawn Lake flood, July 15, 1982, in Rocky Mountain National Park, geomorphic process studies were initiated on Fall River in Horseshoe Park. This event has provided an ideal opportunity to study the geomorphic response of a meandering, gravel-bed river to a catastrophic flood. The research was simplified because of the unique field setting and because there were few modifications of the flood deposits or channel prior to the 1983 snowmelt season. The changes observed during the past 4 years can, therefore, be related to a well-defined baseline. The results of this work can be formulated in terms of the magnitude and frequency of geomorphic processes and in terms of the concept of landform recovery from extreme events. The field site is also being used to study sediment transport at a detailed scale because, in gravel-bed rivers. The 4-year Fall River data set represents a unique study of a catastrophically-effected stream. The results of this work provide important insight into the short-term rates and mechanisms of geomorphic response following large flood events.
- Geology, Geochemistry and Mineralogy
- Hydrology, Limnology and Potamology