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Showing 1 to 20 of 43 for “"river restoration"”.
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Elsieskraal: River restoration as urban catalyst
… research project will explore the effects that river restoration can have on urban transformation. The focus will be the Elsieskraal River, which flows from the Tygerberg Hills to the Black River, through “the most diverse and densely populated range of suburbs” in Cape Town (Brown, 2009, p. …
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Wake characteristics associated with logjams to inform river restoration
… engineered logjams are being placed back into rivers, especially in the Pacific Northwest of the U.S., to promote salmonid populations. Riverine habitats are created by variations in substrate size, depth, velocity, turbulence, temperature, and cover. All species have preferences for certain …
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The Elwha River Restoration: Landscape Change, Salmon, and Sense of Place
<p>Removal of the Elwha River dams to restore the ecosystem and salmon fisheries is the largest project of its kind in the history of the United States. Spanning decades and affecting generations, this project has changed and will continue to change the landscape. This research examined the …
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Lessons learned from urban river restoration projects: application of restoration treatments on the Los Angeles River.
<p>Human development has altered many rivers around the world. In the past, urban rivers were condemned as flood hazards, and load-reducing treatments were the only treatments applied to protect the surrounding communities against flooding. These treatments aim to collect precipitation from the …
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Applying numerical sediment transport models to examine river restoration sustainablilty at the Rio Grande Nature Center, New Mexico
… stressors have continued to cause the river to incise and narrow and have harmed the ecological health of the system. As a result, many different entities have developed restoration projects along the Middle Rio Grande. These projects are often localized, small scale features that …
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A framework for river restoration planning : considering conceptual and structural perspectives from case studies of the Liao River in China and the Kalgan River in Australia
Over the last decade, restoration ecology has been considered a new paradigm for dealing with many of the environmental problems of river systems. It is also recognized that management decisions have a greater chance of being successful if they are based on a thorough understanding of a concept or …
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NON-FEDERAL/FEDERAL COLLABORATORS IN ENDANGERED SPECIES DRIVEN RIVER RESTORATION: HOW RISK AND INCENTIVE MOBILIZE INSTITUTIONAL SUPPLY IN THE MIDDLE RIO GRAND ENDANGERED SPECIES COLLABORATIVE PROGRAM
The Middle Rio Grande Endangered Species Collaborative Program is an interagency, multiple-stakeholder organization, which works to enable cooperative solutions to endangered species issues on New Mexicos Middle Rio Grande. The Program is a product of what some authors describe as a 'new age' of …
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Rethinking urban streams : opportunities for the Nhieu Loc -- Thi Nghe River
… many cities have turned their backs on the rivers that helped form and nurture them. Due to the perceived low cost of their existing infrastructure, many rivers have become open or enclosed sewerage and drainage channels. In the past few decades, better scientific understanding and improved …
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Quantifying the Environmental Performance of a Stream Habitat Improvement Project
<p>River restoration projects are being installed worldwide to rehabilitate degraded river habitat. Many of these projects focus on stream habitat improvement (SHI), and an estimated 60%of the 37,000 projects listed in the National River Restoration Science Synthesis Program focus on SHI for salmon …
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Hydromorphological evolution of a restored river; a case study in the Upper River Eden catchment
River restoration has undergone a shift in approach from structural interventions controlling unwanted erosion to river naturalisation and the “re-meandering” of channels back to an historic planform. This is driven by acknowledgement of rivers as dynamic systems that, through restoring erosional …
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Controls on Mixing and Non-Mixing Dependent Denitrification in River Hyporheic Zones
… to simulate hyporheic flow cells induced by riverbed dunes and upwelling GW together with mixing dependent denitrification of an upwelling nitrate (NO3-) plume. My basecase model scenario entailed dissolved organic carbon (DOC) and dissolved oxygen (DO) advecting from SW and DO and NO3- …
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Flow, sediment transport, and bed topography in straight and curved gravel-bed channels
In recent years, many river restoration projects have aimed to restore natural channel stability and dynamism by re-establishing channel meanders lost to historical channelization. An understanding of meandering channel behavior is crucial to successful restoration of these rivers. Meandering and …
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Evaluating sediment storage time for improved management of river basin pollution
… have detrimental effects on water quality and river ecology, with sediment deposition on, and subsequent infiltration into, streambed substrate impacting riverine habitats. Significant research has assessed the magnitude, controls, and impacts of fine sediment in river channels. Assessment of …
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Environmental Flow Regime Recommendations for the Promotion of Salicaceae Seedling Recruitment in California’s Central Valley
<p><em>Rivers around the world are being degraded due to alteration of natural flow regimes caused by the creation of dams and diversions to serve human needs for water. Alteration to natural flow regime affects a river’s flow magnitude, frequency, duration, timing, and rate of change of flow. …
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Restoring the "Shining Waters": Milltown, Montana and the History of Superfund Implementation
… is a case study of a dam removal and river restoration within the nation's largest Superfund site. In 1981, the U.S. Environmental Protection Agency included Milltown Reservoir on its first list of Superfund sites. Superfund law capped two decades of the federal government's most …
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Restoring the "Shining Waters": Milltown, Montana and the History of Superfund Implementation
… is a case study of a dam removal and river restoration within the nation's largest Superfund site. In 1981, the U.S. Environmental Protection Agency included Milltown Reservoir on its first list of Superfund sites. Superfund law capped two decades of the federal government's most …
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A bio-indicator assessment towards the rehabilitation of the Stiebeuel River, Franschhoek, South Africa
… and urban informal settlements are degrading rivers and causing a decline in habitat integrity and the delivery of ecosystem services. There is a need to implement river restoration programmes to alleviate the negative impacts on stream ecosystems. This study aimed to determine the ability of …
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Surface Water and Groundwater Hydraulics, Exchange, and Transport During Simulated Overbank Floods Along a Third-Order Stream in Southwest Virginia
… floodplain is a common practice in stream and river restoration. Floodplain hydrology and hydrogeology impact biogeochemical processing and potential nutrient removal, yet rigorous field evaluations of surface and groundwater flows during overbank floods are rare. We conducted five sets of …
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Determining primary drivers of river bead functionality in mountain headwater streams
… Beads are disproportionately important to river corridor health. Bead functionality was evaluated as a relationship between driver variables, which directly measure or measure proxies of geomorphic and biotic system inputs, and response variables, which are proxy variables believed to most …
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Stream channel adjustments and persistence of change in response to beaver damming on a fluvial fan, Odell Creek, Montana
… 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 characteristics. Data on dam effects, especially the longevity of dam effects, are limited. To …
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