river bed sampling Articles

  • River Severn case study

    Shrewsbury and Atcham Borough Council River Severn at Shrewsbury, channel management proposals Hydro-Logic was appointed by Shrewsbury and Atcham Borough Council in 2008 to advise on the build-up of sediment within the River Severn, where it passes through the town. The council's pleasure boat had a history of running aground and they had been refused permission ...


    By Hydro-Logic Services

  • Remote monitors track river restoration success

    The Norfolk Rivers Trust has installed a remote river monitoring station that has been tracking water quality and flow before and after river restoration work at an area of ecological importance on the River Nar. Rising in chalk hills to the east of the village of Tittleshall, the river flows south for 2.5 km until it reaches Mileham, then predominately west for 39.5 km through the villages of ...


  • InfoWorks RS aids priority river flood modeling in New Zealand

    Project Background Innovyze’s InfoWorks RS has been the key software in helping to formulate flood risk reduction strategies throughout the Northland Region of New Zealand, an area of approximately 14,000 km2 on the northern tip of New Zealand’s North Island. The Northland Region has a predominately tropical climate. In recent years a number of tropical storms have ...


    By Innovyze

  • The chronic toxicity of sodium bicarbonate, a major component of coal bed natural gas produced waters

    Sodium bicarbonate (NaHCO3) is the principal salt in coal bed natural gas produced water from the Powder River Structural Basin, Wyoming, USA, and concentrations of up to 3000 mg NaHCO3/L have been documented at some locations. No adequate studies have been performed to assess the chronic effects of NaHCO3 exposure. The present study was initiated to investigate the chronic toxicity and define ...


    By John Wiley & Sons, Ltd.

  • GIS-Based Rapid Geomorphic Assessment to Guide Sustainable River Restoration and Riverfront Redevelopment: Four Mile Run, Alexandria, Virginia

     ABSTRACT A Geographic Information System (GIS)-based geomorphic assessment was performed to quickly identify opportunities and constraints for a river restoration and riverfront redevelopment project along Four Mile Run in Alexandria, Virginia. This assessment was further used to guide channel restoration design. Components of the GIS-based geomorphic assessment included the following: ...

  • Grain size distribution and sediment flux structure in a river profile, measured with a LISST-SL instrument

    Abstract New data on sediment transport in a river are reported using a LISST-SL laser diffraction instrument that simultaneously measures velocity, optical transmission, depth, temperature, and sediment particle size distribution (PSD) isokinetically. Suspended sediment concentration (SSC)is obtained from the sum of PSD. Optical transmission is seen to be nearly constant in the top ...


    By Sequoia Scientific, Inc.

  • Spatial variability of sedimentological properties in a large Siberian lake

    The analysis of spatial variability of lake sediment properties in Lake Lama, Central Siberia is presented. The aims were to characterize the spatial structure in lake sediment composition, to determine major spatial patterns of sediment properties by calculating estimates at locations where no samples were available, and to assess the main processes determining these patterns. Sediment ...


    By Springer

  • Design, Construction, Installation, and Operation of a Compact Bio-Oxidation System to Manage Odors at the City of Wilsonville WWTP

    ABSTRACTThe 5 mgd Wilsonville WWTP was experiencing odor complaints from the adjacent residential neighborhood. An existing in-ground, bark and wood-chip biofilter was not performing well. In December 2004, the City of Wilsonville contacted BioReaction Industries (BRI) requesting the design of a bio-oxidation system with guaranteed performance criteria. The project required an understanding of ...

  • Integrated local water supply plan

    Client: City of Wichita, Kan. Completion Date: June 2001  Services Provided Water supply planning Evaluation of alternatives Cost estimating Economic comparison Environmental studies (NEPA) Program management Hydrogeologic engineering Water quality monitoring ...


    By Burns & McDonnell

  • Closures of mine a new challenge for Romania

    AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...


  • IAQ investigators often overlook Bacteria as the Root Cause of Occupant Complaints

    Untitled Document Many investigators have been dealing with mold issues the last few years and may have been overlooking bacteria as the underlying microbial problem. Bacteria ...


    By EMSL Analytical, Inc.

  • Engineered wetland removes subsurface hydrocarbons while providing beneficial reuse

    British Petroleum (BP) is operating an engineered wetland to treat petroleum-contaminated groundwater at a 300-acre site in Casper, WY. Release of petroleum products during refinery operations from 1908 until 1991 resulted in significant petroleum hydrocarbon contamination. Over 44,000 yd3 of LNAPL were removed by dual-phase recovery wells and oil/water separators constructed in 1981, but ...

  • Biosolids Composter Satisfies Customers and Neighbors

    A ticket to Penn State football games isn’t the only hard thing to come by in State College, Pennsylvania. So is the biosolids compost produced by State College’s University Area Joint Authority (UAJA) wastewater treatment plant. “For the last four years, we’ve been sold out before we’ve made the compost,” says Stephen Welch, who manages the UAJA composting plant. All biosolids generated — about ...


    By BioCycle Magazine

  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...

  • Becoming a Zero Emissions Brewery

    Diverting 600 tons annually from landfills turn hops, grains, pallets, cardboard, glass, office paper and shrink wrap into major savings — and great beer! ALMOST AS FAMOUS for reducing its waste as for making great beer, Mad River Brewing Company of Blue Lake, California is renowned for its Steelhead and Jamaica ales as well as its ten Waste Reduction Awareness Program (WRAP) awards ...


    By BioCycle Magazine

  • Compost in the mix for storm water management

    Bioretention areas, also known as rain gardens, are increasingly being used to capture and treat storm water runoff from impervious surfaces such as roofs, sidewalks and parking lots. These landscaped areas often feature native plants installed in an engineered soil mixture that includes compost. “Bioretention areas or rain gardens are an attractive storm water Best Management Practice (BMP) ...


    By BioCycle Magazine

  • Digester Developer Taps Natural Gas Markets

    IN the late 1990s, Dan Eastman and two colleagues were researching business opportunities in the renewable energy industry. They were looking for a commercially viable technology that could take renewable energy from an experimental phase to a solid business investment. In 1999, Eastman and his partners founded Microgy, Inc., with its base in Wisconsin. The company licensed the Xergi anaerobic ...


    By BioCycle Magazine

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