river sediment measuring News

  • Scientists measure Elwha River conditions now to help measure 2012 dam removal success

    When the Elwha and Glines Canyon dams in Washington State are torn down in 2012, scientists will be able to see — as never before — how the removal of large dams affects the restoration of ecosystems, plants, fisheries and other animals. Experts hope that removing the dams will restore more than 70 miles of spawning and rearing habitat for endangered salmon and steelhead, as well as other native ...

  • Testing ecological toxicity in rivers

    Water quality in rivers is commonly classified according to its physical and chemical properties, but this may not fully describe its biological health. Polish researchers have tested a new method of water assessment, which looks at the toxicity to organisms of not just water, but also sediment and floodplain soil samples. This provides a more complete picture of a river's health and may help ...

  • The environmentally effective remediation of marine sediment

    31st July 2006: Following a series of successful trials around the world, Virotec’s patented technologies are set to penetrate the UK market to great environmental effect. Their innovative ViroSoil™ Technology has been shown to offer a viable and economic total treatment solution for contaminated marine sediment through the neutralisation of the acid generating capacity of the dredged ...


    By Clarity Authoring

  • Predicting sediment flow in coastal vegetation

    Original story at MIT News Seagrass, kelp beds, mangroves, and other aquatic vegetation are often considered “ecosystem engineers” for their ability to essentially create their own habitats: ...

  • Sediment pollution should be included in water quality assessments

    The quality of surface water is best assessed using the status of both the water and underlying sediment. A recent study concluded that water bodies risk being misclassified if sediment assessment is not included, which can lead to unnecessary recovery costs. Under the Water Framework Directive1 (WFD), Member States are required to achieve at least 'good water status' for surface water (inland, ...

  • An economic case for restoring rivers and their ecosystem services

    Unless they are sustainably managed, commercial timber forests generally have low amounts of deadwood on the forest floor, as timber is harvested before it falls. However, this can affect local ecosystem services provided by forest streams. Naturally fallen logs can help purify stream water and prevent ...

  • A flood study of the Urumea River in The Basque Country

    The Urumea river catchment area which is located in the Basque Country in the northern part of Spain has historically been seriously affected by flooding. The districts most affected by the frequent inundations are the municipalities of San Sebastian, Astigarraga and Hernani. As recently as October 2008 a minor flood was experienced in Hernani. In 2006 and 2004 major flood events with significant ...


  • Mississippi River an `Orphan` in Terms of Water Quality

    WASHINGTON, DC, October 18, 2007 (ENS) - The U.S. Environmental Protection Agency has failed to coordinate and oversee state water quality activities along the Mississippi River, leaving the nation's largest waterway an 'orphan,' the National Research Council says in a new report. Greater effort is needed to ensure that the river is monitored and evaluated as a single system, said the ...

  • Using micro-organisms to monitor river health

    Monitoring changes in microscopic organisms called diatoms can assist in evaluating the quality of water over an entire river watershed. Researchers from France have developed a new index that could help Member States fulfill the EU's Water Framework Directive 2000 (WFD). The WFD aims to achieve good ecological and chemical status in surface water bodies by the year 2015. Diatoms are a type of ...

  • US river flows altered by water management

    The amount of water flowing in streams and rivers has been significantly altered in nearly 90% of waters that were assessed in a new nationwide USGS study. Flow alterations are a primary contributor to degraded river ecosystems and loss of native species. Flows are altered by a variety of land- and water-management activities, including reservoirs, diversions, subsurface tile drains, groundwater ...

  • Desert dust cuts Colorado river flow

    Snow melt in the Colorado River basin (USA) is occurring earlier, reducing runoff and the amount of crucial water available downstream. A new study shows this is due to increased dust caused by human activities in the region during the past 150 years. The study, led by a NASA scientist and funded by the agency and the National Science Foundation (NSF), showed peak spring runoff now comes three ...

  • America`s 10 most endangered rivers

    Diminished by drought, impounded by 11 hydroelectric dams, and the subject of a US Supreme Court water battle between the states of North and South Carolina, the Catawba-Wateree River today was named the most endangered river in the United States. The Catawba River begins its 300 mile run to the Atlantic Ocean high in the Blue Ridge mountains of western North Carolina, and flows through the ...

  • New Reservoir Will Funnel Colorado River Water to Nevada

    LAS VEGAS, Nevada (ENS) - A bill that directs the Bureau of Reclamation to construct a new reservoir to capture billions of gallons of Colorado River water requested by Arizona and California users but not used, was signed into law today by President George W. Bush. Included in the massive HR 6111 Tax Relief and Health Care Act, the measure will enable the capture and use of ...

  • EPA concludes season’s dredging of New Bedford harbor contaminated sediment

    This latest dredging effort started in May 2011 and focused on the northern cove on the Acushnet side of the Harbor and off-shore from the Titleist facility on Hadley Street in New Bedford. Approximately 11 acres of sediment were dredged this year, resulting in the removal of more than 21,600 cubic yards of contaminated sediment. Dredging activities will resume again in Summer 2012. The dredged ...

  • EPA Proposes sediment limits for chesapeake bay pollution diet

    EPA today announced draft sediment limits as the next step in establishing the Watershed Implementation Plans (WIPs) for the Chesapeake Bay Total Maximum Daily Load (TMDL). The TMDL is a rigorous pollution diet for meeting the water quality standards in the Chesapeake Bay and its tidal tributaries, and restoring local rivers and streams throughout the 64,000-square-mile watershed. The six ...

  • Ancient glacial sediments drag down Louisiana`s sinking coast

    Sediments deposited into the Mississippi River Delta thousands of years ago when North America's glaciers retreated are contributing to the ongoing sinking of Louisiana's coastline, finds new research by NASA and scientists at Louisiana State University. The weight of these sediments is causing a large section of Earth's crust to sag at a rate of 0.04 to 0.3 inches a year, the study determined. ...

  • Dangerously high levels of endocrine disrupting chemicals found in marine sediments

    Endocrine disrupting chemicals (EDCs) can interfere with the hormonal systems of both humans and wildlife. New research quantifying EDCs in marine environments in Greece found concentrations which present significant risks to sediment-dwelling organisms. Reduction and prevention of chemical pollution and subsequent harm to marine ecosystems is a key aim of the EU Marine Strategy Framework ...

  • Integral Consulting scientists to share expertise at Battelle Conference on remediation of contaminated sediments

    Eleven Integral Consulting experts have been selected to present information in platform and poster sessions at Battelle’s Fifth International Conference on Remediation of Contaminated Sediments to be held February 2–5, 2009 in Jacksonville, Florida. Representatives from Integral sediments staff will also be available in Booth #302 to answer questions on the firm’s sediment services and other ...


    By Integral Consulting Inc.

  • Thermo Fisher Scientific participates in Muddy River restoration project

    Thermo Fisher Scientific Inc., the world leader in serving science, is participating in the massive remediation of the Muddy River, in cooperation with Simmons College, by supplying instruments that are used to screen for levels of sulfur in river sediment. Muddy River is part of Boston's Emerald Necklace, designed by Frederick Law Olmsted in the late 1800s as a 1,100 acre chain of parks linked ...

  • Measure Great Lakes cleanup progress

    An Obama administration program that has spent more than $1.3 billion on healing the troubled Great Lakes needs a better scorecard for measuring its performance, a government watchdog report released Friday says. The analysis by the Government Accountability Office does not pass judgment on how well the Great Lakes Restoration Initiative is ...


    By Associated Press

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