waterway maintenance Articles

  • Infrastructure Maintenance - An Economic Opportunity

    Public safety and the cost of doing business are deeply impacted when infrastructure is neglected. Here’s a look at the high cost of low maintenance and what can be done about it. A Bridge Too Far There are over 607,000 bridges in the United States. According to the 2013 Report Card for America’s Infrastructure,1 published by the American Society of ...


    By ASTM International

  • River Floodplain Maintenance-measures influencing roughness

    The maintenance of rivers and floodplains can make an important contribution to flood protection.  Waters conservation used to be understood mainly as verification of fast discharges, which was achieved through regular mowing. Furthermore, the waterways had to be navigable and accordingly required water depths had to be accomplished through maintenance measures (e.g. digging). Today, ...


    By IWA Publishing

  • Silt Fence installation efficacy: definitive research calls for toughening specifications and introducing new technology

    Introduction: Silt fence is a joke on many construction sites. It is often seen just blowing in the wind, or sagging and broken down. Some specifiers won’t utilize silt fence on their sites because it is too often installed improperly, and not maintained. Yet, the need for effective on-site sediment control has never been greater. Sediment-laden runoff has been shown to result in the loss ...


    By L & M Supply Company

  • BNSF skykomish

    Passive Pre-Treatment with ChitoVan Cartridges Followed by CESF with 1 % ChitoVan Cleanup of a former railway fuel and maintenance facility in Skykomish, WA is currently underway. Nearby environmentally sensitive waterways have increased the need for responsible management of contaminated waters. Two Chitosan-Enhanced Sand Filtration systems have been implemented by Clear Water Compliance ...


    By Dungeness Environmental

  • Challenge and response in the Mississippi River Basin

    This paper discusses the historic and contemporary challenges in the management of the lower Mississippi River Basin, and describes the evolving role of the federal government in addressing these challenges. In the early eighteenth century, the federal government was responsible for maintaining a navigable channel. After repeated calls by states for federal assistance with flood control and a ...


    By IWA Publishing

  • Working Towards Watershed Management in the City of Atlanta

    In 2002, the leadership of the City of Atlanta kicked off a comprehensive program to have the cleanest urban streams and rivers in the country within a decade, recognizing that the City’s future economic growth, jobs, affordability, and quality of life all depend on clean water. Atlanta is faced with many obstacles on the way to meeting this challenge; a few of these include: Ongoing ...

  • Online flow measurement

    Background The undershoot weir in Hohensaaten was built in 1913. It has three openings and regulates the discharge from the Oderbruch and from the Finow canal into the Hohensaaten-Friedrichsthaler-waterway. Moreover, it protects parts of the Oderbruch against Oder floods. The weir controls the waterlevels in the Havel-Oder-waterway and in the reach of Niederfinow- Hohensaaten. ...

  • Online discharge measurement with OTT SLD

    Background For the economic management of the waterways between Elbe and Oder it is essential to know the discharge of these rivers at defined locks. The authority for water and navigation (WSA) in Lauenburg operates hydrological stations for the measurement of water level and discharge to effectively regulate the water flow at the locks in Plau and Malliß ...

  • Architect Sinan's Kırkçeşme water supply system outside the city of Istanbul and city network

    The city of Istanbul has important water system remnants from old civilizations among which water line systems begun with Byzantine period and continued during Ottoman era, including Kırkçeşme water supply system. The original gallery structure within the Kırkçeşme system has been altered with time at some places as a result of necessary planning ...


    By IWA Publishing

  • Piedroba Dewaters Slurry, Returns Clean Water to Holmes Beach Canals

    This project was a successful application of a total cleaning system (TCS), where the particular type of solids of the sediments permitted the dredger to avoid the costly construction of a dredged material maintenance area (DMMA), or the transportation and tipping fees for a municipal landfill. The surface waters were cleaned in tandem, and contributed to a higher quality benthic environment in ...

  • Biofiltration of VOCs for Paint Manufacturing and Coatings Applications

    Biofilters, long used in Europe for odour control because of low maintenance, energy and operating costs have had a difficult time penetrating the US. The energy crisis and the cry for sustainable technologies have created interest in pollution control devices that reduce emissions and are energy efficient. This paper will discuss technical performance, design factors and economics of a ...


  • Radar measurement in the North Sea

    Background / Task The NLWKN operates the barrier in the inland waterway of the river Ems. They are working with a dense monitoringnetwork which is required e.g. for the preservation of evidence in case of blocks for the protection against storm tides or if the water depth has to be increased to make the Ems navigable for big vessels coming from the dockyard. After an average a new radar ...

  • Egypt: Financing local water management

    The Nile provides Egypt with 90% of its direct water needs and 97% of its agricultural irrigation requirements. The near monopoly the Nile has on Egypt’s waters has, throughout history, shed a level of centralization on its water management. The Ministry of Water Resources and Irrigation (MWRI) is the main responsible body for managing the distribution and drainage of water, the protection ...


    By IWA Publishing

  • Geotube Dewatering Technology Provides Expertise in the Clean-Up of Contaminated Sediments - Case Study

    Geotube units offer an effective solution for contaminated sites to manage the recovery and containment of PCBs, heavy metals, BTEX, PAHs, PACs, and other hazardous materials. Contaminated sediments are a common problem for communities and industries around the world. Past spills, leaks, discharges, and improper disposal or management of hazardous materials and wastes often result in ...

  • 2. Blending Multiple Policies and Interests into a Single Project

    In this chapter we will deal with the multiple policy context of the Regge renaturalization project. The project is not solely a water management process, as it includes nature development aspects as well as many other policies and societal goals. Furthermore the Regge renaturalization is embedded in water buffering policies and corridors connecting ...


    By IWA Publishing

  • Bristol Harbour Authority, UK

    Bristol Harbour Authority, responsible for the famous Floating Harbour which extends right into the city centre, chose the Water Witch Buddy to support a local initiative to improve the environment and rid the water space of unsightly floating litter (plastic bottles, Styrofoam cups, food packing) and other flotsam and jetsam. Over the past 20 years, Bristol's vast Floating Harbour dockland area ...


  • Hydraulic Dredging: A cost effective solution for most dredging tasks

    The vast majority of dredging jobs require removal of solids to depths of 30 feet or less. Several features enable hydraulic dredges to be the solution of choice for these applications. First, what are hydraulic dredges and how do they compare with alternative mechanical dredge types? Hydraulic dredges create slurries, combinations of solids and water, pump the slurries to the ...


    By SRS Crisafulli, Inc.

  • Effective Removal of Zebra Mussels with Amiad Screen Technology

    Introduction The zebra mussel, native to the Black and Caspian Seas, has spread in the past few decades to waterways throughout the world mostly via ballast water. Zebra mussels, when non-indigenous to the environment, pose a serious threat to intakes of facilities that rely on fresh and brackish surface water. The mussel colonies obstruct the flow of water through the pipelines eventually ...

  • Union county aquifer restoration

    Client: Union County Water Conservation Board  Completion Date: 2003  Services Provided 65-MGD river intake Mechanically cleaned bar screen Two traveling water screens Quarter-mile-long access bridge with service deck Four 15,050 gpm vertical turbine intake pumps 48-inch raw water ...


    By Burns & McDonnell

  • Port of Antwerp, Belgium

    The Port of Antwerp is a famous cargo handling port but is also only 300m from the historic city center, attracting hundreds of thousands of visitors every year. The Port needed to keep their waters clear of unsightly llitter and debris. Also, as a developing cruise port it handles 14,000 sailings per year to over 800 overseas destinations, and floating debris was causing a risk to navigation. ...


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