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DigitalCommons@USU
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In this study, numerical experimentation with two-dimensional hydraulic modeling of pool–riffle river topography drawing on the testbed data from the classic Keller (1971) study was used to investigate the effect of synthetically manipulating...
2015-01-01
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Riparia surrounding low-order streams are dynamic environments that often support distinct biodiversity. Because of their connection to nearby uplands, riparian vegetation communities at these streams respond to many environmental...
2014-08-01
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Current droughts and increasing water demands are straining water resources in the Salmon River Basin (SRB) and are anticipated to continue in the future. As a robust drought indictor, soil moisture plays an important role in characterizing...
2014-09-01
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Digital elevation models (DEMs) derived from ground-based topographic surveys have become ubiquitous in the field of fluvial geomorphology. Their wide application in spatially explicit analysis includes hydraulic modeling, habitat modeling, and...
2014-06-01
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Biogenic features such as beaver dams, large wood, and live vegetation are essential to the maintenance of complex stream ecosystems, but these features are largely absent from models of how streams change over time. Many streams have incised...
2014-04-01
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Fine-scale (submeter) resolution digital elevation models (DEMs) created from high precision (subcentimeter) instruments (e.g., total station, rtkGPS, and laser scanning) have become ubiquitous in the field of fluvial geomorphology. They permit a...
2014-02-01
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An ever-increasing list of options exist for collecting high resolution topographic data, including airborne LIDAR, terrestrial laser scanners, bathymetric SONAR and structure-from-motion. An equally rich, arguably overwhelming, variety of tools...
2013-12-01
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Over the past several centuries, the population of North American Beaver has been dramatically reduced through fur trapping. As a result, the geomorphic impacts long-term beaver occupancy and activity can have on fluvial systems have been lost,...
2013-12-01
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Stream restoration is often targeted to improve fish habitat. However, predictions or evaluations of habitat or fish population responses to these actions are rarely assessed or more often assumed. Model predictions that describe both physical and...
2013-12-01
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A nearly complete baseline multibeam echosounder (MBES) survey of the 90 km of the Hells Canyon Reach of the Snake River that runs along the border of Idaho and Oregon, US was collected to monitor volumetric change in the sediment resources of...
2013-12-01
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Despite the growing availability of high resolution topography and imagery in fluvial environments, a systematic and coherent framework for the automated derivation of geomorphic units from topography alone does not exist. Coherent morphometric...
2013-12-01
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Beaver dams and beaver activity affect hydrologic processes, sediment transport, channel complexity and water quality of streams. Beaver ponds, which form behind beaver dams, increase in-channel water storage affecting the timing and volume of...
2013-12-01
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The travel distances of coarse sediment in gravel-bed rivers during floods, or their path-lengths, exhibit strong dependencies on the arrangement of geomorphic units they are sourced from, routed through or around, and finally deposited on....
2013-12-01
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Techniques for collecting high resolution digital elevation models (DEMs) of fluvial environments are cheaper and more widely accessible than ever before. These DEMs improve over traditional transect-based approaches because they represent the...
2013-12-01
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Airborne and terrestrial LiDAR data and methods have been demonstrated extensively for application to landslides and other earth surface processes. Fusion of these datasets provides new opportunities for monitoring change, quantifying mass...
2013-12-01
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Repeat surveys of channel morphology provide a means to quantify fluvial sediment storage and enable inferences about changes in long-term sediment supply, watershed delivery and bed level adjustment; information vital to support effective river...
2013-12-01
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High-resolution topography data (lidar) are being collected over increasingly larger geographic areas. These data contain an immense amount of information regarding the topography of bare-earth and vegetated surfaces. Repeat lidar data (collected...
2013-12-01
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Riparian vegetation may recover quickly from disturbance when the disturbance vector is removed or reduced. Grazing is a disturbance that removes plant biomass through herbivory, while overgrazing is a more severe disturbance that can deplete...
2013-09-01
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Dams created by North American beavers Castor canadensis (hereafter, “beavers”) have numerous effects on stream habitat use by trout. Many of these changes to the stream are seen as positive, and many stream restoration projects seek either to...
2013-04-01
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Previous flume-based research on braided channels has revealed four classic mechanisms that produce braiding: central bar development, chute cutoff, lobe dissection, and transverse bar conversion. The importance of these braiding mechanisms...
2013-06-01
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Improved understanding of the connection between riparian vegetation and channel change requires evaluating how fine-scale interactions among stems, water, and sediment affect larger scale flow and sediment transport fields. We propose a spatially...
2013-03-01
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Beaver (Castor canedensis), well known for their dam-building ecosystem engineering activities and potential as a nuisance species, are increasingly being used as a restoration agent and conservation tool to restore dynamism in streams and create...
2013-10-01
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River managers often seek to understand habitat availability and quality for riverine organisms within the physical template provided by their landscape. Yet the large amount of natural heterogeneity in landscapes gives rise to stream systems...
2012-12-01
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Many strategies for quantifying uncertainty in estimates of geomorphic change involve establishing a threshold, or minimum level of detection (minLoD), below which any topographic changes are discarded from the analysis. The general premise is...
2012-12-01
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Stream restoration has been plagued with high price tags, limited spatial extents, and questionable effectiveness in light of largely absent monitoring efforts. One prominent example is the placement of large woody debris (LWD) structures and...
2012-12-01
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