Index Catalog // ScholarsArchive@OSU

Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA

Creator:: Landon, Kyle C.
Abstract:: Velocity measurements from drifter GPS records are assimilated and used in an ensemble-based inversion technique to extract the river bathymetry. The method is tested on a deep meandering reach and a shallow braided reach of the Kootenai River in Idaho, USA. The Regional Ocean Modeling System (ROMS) is used to...
Resource Type:: Masters Thesis
Full Text:: -Based Data Assimilation and Depth Inversion on the Kootenai River, ID, USA Abstract approved: H. Tuba

The intrusion of logging debris into artificial gravel streambeds

Creator:: Garvin, William Fredrick
Abstract:: Research Performed for the Office of Water Research and Technology United States Department of the Interior under the provisions of P.L. 88-379
Resource Type:: Technical Report
Full Text:: per 30 .48 meters of channel length. For this study , ranges of material of each size class were

Historical change in channel form and riparian vegetation of the McKenzie River, Oregon

Creator:: Minear, Paula J.
Abstract:: This study examined channel structure and position and riparian vegetation and land use on the upper 70 km of the McKenzie River, Oregon in the 1940s, compared the 1940s conditions to present conditions, and explored the processes driving change in this system and the implications for aquatic habitat. The hydrologic...
Resource Type:: Masters Thesis

Predicting channel stability in Colorado mountain streams using hydrobiogeomorphic and land use data : a cost-sensitive machine learning approach to modeling rapid assessment protocols

Creator:: Morét, Stephanie L.
Abstract:: Natural resource data are typically non-linear and complex, yet modeling methods often utilize statistical analysis techniques, such as regression, that are insufficient for use on such data. This research proposes an innovative modeling method based on pattern recognition techniques borrowed from the field of machine learning. These techniques make no...
Resource Type:: Dissertation
Full Text:: developed using channel stability data collected from 58 high-elevation streams in the Upper Colorado River

Geology, flooding & human activities : establishing a hierarchy of influence for controls on historic channel change, Willamette River, Oregon

Creator:: Wallick, Jennifer Rose
Abstract:: Channel evolution and influences of changing floodplain characteristics, heterogenous bank materials, and altered flow regimes were examined along the Willamette River, a large alluvial river in northwestern Oregon. The Willamette River is composed of a series of geomorphically diverse reaches, which have each evolved uniquely in the century following Euro-American...
Resource Type:: Masters Thesis

Stochastic geometry with applications to river networks

Creator:: Peckham, Scott
Abstract:: Empirical observations have established connections between river network geometry and various hydrophysical quantities of interest. Since rivers can be decomposed into basic components known as links, one would like to understand the physical processes at work in link formation and maintenance. The author develops a natural stochastic geometric model for...
Resource Type:: Masters Thesis

Riparian cover changes associated with flow regulation and bank stabilization along the Upper Willamette River in Oregon between 1939 and 1996

Creator:: Gutowsky, Sharon L.
Abstract:: This study investigates riparian cover change between 1939 and 1996 utilizing aerial photography, bank conditions and stream gauge data. Three sites under 1.0 km2, along a 10- km reach north of Harrisburg, Oregon, were evaluated. The cover classification scheme included 18 classes composed of 3 canopy densities and 8 structural...
Resource Type:: Masters Thesis

Contributions of riparian vegetation and stream morphology to headwater stream temperature patterns in the Oregon Coast Range

Creator:: Smith, Danielle D.
Abstract:: The role of riparian forests in maintaining temperatures of headwater streams is well established and is a foundation of forest practice rules designed to protect streamwater quality. However, detailed investigation is still needed quantifying specific characteristics of stream systems that affect streamwater temperature including riparian features, stream morphology, and subsurface...
Resource Type:: Masters Thesis
Full Text:: ................................................................................................................... 38 3. 2- Average channel gradient for 38 small headwater streams in the Oregon Coast Range

The effect of the size and orientation of large wood on pool volume in two Oregon Coast Range streams

Creator:: Lombard, Pamela
Abstract:: This study was conducted to determine how the size and orientation of large wood placed in streams in combination with peak flows, substrate and channel gradient affect pool volume, surface area and maximum depth in two coastal Oregon streams. Eighteen Douglas-fir (Pseudotsuga menziesii) logs were placed in each of two...
Resource Type:: Masters Thesis

Lateral cavities in streams : flow structure and mean residence times from channel hydraulics, morphology, and computational fluid dynamics

Creator:: Jackson, Tracie R.
Abstract:: Surface transient storage (STS) and hyporheic transient storage (HTS) have functional significance in stream ecology and hydrology. Both provide refugia for aquatic communities and their longer mean residence times (compared to the main flow) increase the potential for biogeochemical reactions that can improve water quality. As STS and HTS have...
Resource Type:: Dissertation

ScholarsArchive@OSU

Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA

The intrusion of logging debris into artificial gravel streambeds

Historical change in channel form and riparian vegetation of the McKenzie River, Oregon

Predicting channel stability in Colorado mountain streams using hydrobiogeomorphic and land use data : a cost-sensitive machine learning approach to modeling rapid assessment protocols

Geology, flooding & human activities : establishing a hierarchy of influence for controls on historic channel change, Willamette River, Oregon

Stochastic geometry with applications to river networks

Riparian cover changes associated with flow regulation and bank stabilization along the Upper Willamette River in Oregon between 1939 and 1996

Contributions of riparian vegetation and stream morphology to headwater stream temperature patterns in the Oregon Coast Range

The effect of the size and orientation of large wood on pool volume in two Oregon Coast Range streams

Lateral cavities in streams : flow structure and mean residence times from channel hydraulics, morphology, and computational fluid dynamics

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