Papers by Craig Fischenich
Wetlands Engineering & River Restoration 2001, 2001
Engineering Approaches to Ecosystem Restoration, 1998
River Research and Applications, 2013
Woody riparian vegetation provides numerous ecological benefits such as stabilizing streambanks, ... more Woody riparian vegetation provides numerous ecological benefits such as stabilizing streambanks, storing and cycling nutrients, shading streams and providing habitat for wildlife. However, vegetation also increases hydraulic roughness and reduces the effective flow area, resulting in an increased water surface elevation for a given streamflow. Balancing the desire to preserve woody vegetation in stream corridors with the need to manage flood risks requires accurate techniques for predicting the influence of vegetation on stream hydraulics. However, this is a challenging problem because woody vegetation responds to the flow field itself by bending and streamlining in response to hydraulic forces. The goal of this study was to predict the bending behaviour of woody riparian vegetation as a function of hydraulic flow conditions. Field tests were performed to elucidate tree biomechanical properties for select riparian taxa of the southwestern USA. Biomechanical results served as input parameters for a numerical algorithm designed to predict tree bending for water velocities likely to be encountered during flood events. Bending simulations revealed appreciable variability in bent tree heights. Variability was likely a manifestation of the extensive variance in plant characteristics and properties inherent in biological specimens. However, no trees were expected to bend to a height lower than approximately 42% of their original height, even in water moving at 2.5 mÁs -1 . The results of this work provide an important first step in an effort to predict a dynamic hydraulic roughness for vegetated channels and floodplains under flood conditions.
Journal of the American Water Resources Association, 1995
Page 1. WATER RESOURCES BULLETIN VOL. 31, NO.4 AMERICANWATERR ESOURCES ASSOCIATION AUGUST 1995 AS... more Page 1. WATER RESOURCES BULLETIN VOL. 31, NO.4 AMERICANWATERR ESOURCES ASSOCIATION AUGUST 1995 ASSESSMENT OF RESTORED RWERINE HABITAT USING RCHARC' Mitchell R. Peters, Steven R ...
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Papers by Craig Fischenich