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Showing 1 to 20 of 56 for “"Stream channel"”.
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Prediction of stream channel location from drainage basin boundaries
… digital elevation models to attempt to predict stream channel locations within the basin. The skeletons computed for the two basins studied did not predict the location of principal channels in the interiors of the basins studied. This is due, at least in part, to the fact that these two …
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Evaluating Watershed and Stream-Channel Drivers of In-Stream Turbidity in Virginia and North Carolina
… have not always been able to reliably predict in-stream sediment loads. In this study, two scales, watershed and site level, are used to understand where sediment transported in-stream is being produced. At the watershed scale, USLE was used to estimate sediment yield and then different factors …
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Effect Of Stream Channel Incision On The Depth To Groundwater In Riparian Corridors Across Southwestern Minnesota
… shallow groundwater in the riparian corridor. Streams with a higher degree of incision may be less likely to have elevated groundwater tables, making them less effective at removing nitrogen from groundwater. By determining if there is a relationship between site characteristics and groundwater …
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Stream channel adjustments and persistence of change in response to beaver damming on a fluvial fan, Odell Creek, Montana
Beaver damming in streams is thought to increase bed elevation through in-channel sediment storage, thus beaver reintroductions are used as a river restoration tool to repair incised stream channels. However, effects of beaver damming are dependent on specific stream hydrologic and geomorphic …
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Riparian resilience in the face of interacting disturbances: understanding complex interactions between wildfire, erosion, and beaver (Castor canadensis) in grazed dryland riparian systems of low order streams in North Central Washington State, USA
<p>Riparian systems of low order streams in the western United States (US) provide critical ecosystem functions and services such as diverse habitat for numerous species, flood attenuation and essential water storage in water limited environments. These systems have experienced long term …
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Non-perennial streamflow & geomorphic patterns in a semi-arid rangeland slated for development
Urbanization has widely recognizable impacts on stream morphology and flow patterns. Predicting and quantifying these impacts can be difficult, especially for non-perennial streams in semi-arid rangelands. Non-perennial streams tend to lack a historical baseline with complete records of streamflow …
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A Method for the Determination of Design Discharges for Urban Stream Restoration Projects in Northern Virginia
… volume and velocity from urbanization result in stream channel degradation (Hammer 1972; Henshaw and Booth 2000; Walsh et al. 2005; Leopold et al. 2005a; Poff et al. 2006). While stormwater management measures may be implemented to reduce the impact of stormwater runoff on streams, these …
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Characterization of hyporheic zone processes of a northern prairie stream
… A hyporheic zone occurs beneath and adjacent to streams where surface water and groundwater mix. This zone is known to be a reservoir for solutes and a habitat for interstitial organisms. Hyporheic zone boundaries in the Tongue River, North Dakota, were investigated through examination of the …
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Relations between large woody debris, physical habitat, and benthic macroinvertebrates in Appalachian mountain streams
… North Prong Barbours Creek as an experimental stream enhancement technique. The purpose of this study was to determine the stream channel responses to LWD additions at the scale of the stream reach and around individual logs, to determine benthic macroinvertebrate relations to physical habitat, …
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Modeling Channel Degradation at the Watershed Scale: A Comparison of GWLF, SWAT, and CONCEPTS
… to overall sediment loads may be due to stream channel degradation. Monitoring and modeling techniques to assess the contribution of channel sediment to overall sediment load are needed to determine the reductions necessary to meet water quality standards. This research focused on testing …
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Runoff from hummock-covered Arctic tundra hillslopes in the continuous permafrost zone
… soil types, and continuous gauging of the main stream channel. Tundra is a heterogeneous medium in both horizontal (due to the presence of periglacial features such as mineral earth hummocks) and vertical (due to abrupt changes in hydraulic conductivity with depth) directions. Hillslope runoff …
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Lower Scotts Creek Floodplain and Habitat Enhancement Project
… primary factor limiting salmonid production. Instream rearing habitat may also be limiting, especially during drought years. The legacy effects of historic land use practices, including dredging, wood removal, and the construction of levees, continued to limit refuge and rearing opportunities. A …
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Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer
Long-term groundwater level and stream stage measurements at a USGS coupled groundwater stream-gaging station located on the Sunflower River in Sunflower, MS show an apparent stage-threshold for infiltration to the underlying alluvial aquifer. This site is located near the center of a large …
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Hydrogeologic analysis of streamflow in relation to underground mining in northern West Virginia
… a negative effect on overlying watersheds. Nine streams were monitored from their headwaters to their mouths for discharge, temperature, conductivity, alluvium thickness, and alluvium sediment size. Seven streams are located over undermined longwall panels, with two located over non-undermined …
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Estimating effective discharge at Lehman Creek, Great Basin National Park, Nevada
Effective discharge is defined as the streamflow that transports the most sediment over time and is therefore the flow that controls channel shape. Effective discharge was estimated for two sites along Lehman Creek, an alpine fluvial system. Site one (WL-1, 2951 m elevation) has an effective …
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MONITORING AND ANALYSIS OF EROSION AND DEPOSITION IN THE DESERT KNOLLS WASH
… Desert Knolls Wash (DKW), an unstable ephemeral stream channel in Apple Valley, California. The DKW flows into the Mojave River just upstream of the Upper Mojave Narrows, a historic site that has been the focus of recorded human activity in the region since 1776.</p> <p>Two surveyed …
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Nothing is Perfect, But Something is Just Right: Redevelopment of Inner-Ring Suburbs - Integrating Ecological Systems into Modern Urban Villages
… Potomac River. Then, key intersections between stream systems and the development corridors are identified and assessed to determine (a) whether any existing landscape framework surrounding the stream feature is in place and (b) whether the amenities necessary to support a walkable Urban Village …
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Recovery of Channel Morphology and Benthic Macroinvertebrate Assemblages after Livestock Exclusion
Measurements in paired stream reaches with and without livestock access in southwestern Virginia suggest that livestock exclusion practices installed on short, isolated stream reaches result in improved geomorphic and riparian vegetation condition, but do not significantly improve the benthic …
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Evaluating Geomorphic Change in Little Creek Using Repeated Cross-Sectional and Longitudinal Profile Surveys
… established in 2002 along a forested mountain stream (gradients range from 0.02 to 0.05) on Cal Poly's Swanton Pacific Ranch in Santa Cruz County, California. These study reaches are a component of paired and nested watershed studies in the approximately 500 hectare Little Creek watershed. The …
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