Stormwater Management Articles

  • Erosion Protection of Steep Cut Slopes - Case Study

    In May of 1995, 70,000 sf of large-cell (GW40V) GEOWEB® slope protection system was utilized on Phase II of the Cyprus Miami Open-Pit Mine to stabilize the cut slopes upon completion of copper extraction at the site. Aggregate available on site was used to infill the GEOWEB 3D structure and provide erosion resistance and slope-surface stability on slopes with 70-ft. slope lengths, and as ...


    By Presto Geosystems

  • Get more out of Water Resources Engineering Models

    The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision makers and the public. This approach might serve ...


    By XP Solutions

  • Get More Out of Water Resources Engineering Models

    by Venu Kandiah, PhD, P.E. Senior Water Resources Engineer The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and ...


    By XP Solutions

  • Productivity Gains in Stormwater Design

    For some engineering consultants, traditional stormwater pond design can be one of the most frequent projects within their services portfolio. An engineer with prior experience can size and produce plans with assistance from modeling software, AutoCAD, and supporting tools with relative ease. But even very routine projects can benefit from modeling software improvements. McBade Engineers and ...


    By XP Solutions

  • Storm Water Master Plan development employing an integrated 1D/2D model for the Redwood Basin in Josephine County, Oregon - Case Study

    The use of two-dimensional (2D) storm water models has increased in recent years primarily due to advances in software, hardware and the availability of surface data. These advances allow for robust and diverse applications including basinwide storm water assessments. Storm water master planning is a critical element for the development of state and local agency comprehensive plans, capital ...


    By XP Solutions

  • Modeling BMP’s in Sensitive Areas with xpswmm - King’s Beach Watershed Improvement Project - Case Study

    Introduction Located on the border of California and Nevada, Lake Tahoe (the Lake) is the largest alpine lake in North America. It is known for its scenic beauty and outstanding lake clarity. However, the clarity of the Lake has been declining since the mid-1960s because of the deposition of fine particles and nutrients from urban runoff and the growth of aquatic organisms that feed off the ...


    By XP Solutions

  • Master Plan of Drainage for Redlands - Using advanced storm drain modeling techniques to identify historical flooding issues - Case Study

    The city of Redlands, California, has a long history of flooding during moderate to severe storm events. The historic downtown area resides just downstream of the confluence of four major tributaries. The four tributaries run into a single storm drain under Redlands Boulevard, which routes flows through the downtown. The existing capacity of the current facility is approximately 2,000 cu ft per ...


    By XP Solutions

  • Stormwater Management Improvements Spurred by Low Impact Development Techniques

    Abstract A concept first advanced in 19901, evidence of Low Impact Development (LID) can now be seen across North America. Like many infrastructure transformations, this growth in LID design has benefitted from regulatory changes; compliance versus cost remains an important motivator in any ...


    By Nilex

  • Most UK coastal flooding caused by moderate, not extreme storms

    Scientists at the NOC and the University of Southampton have found that the majority of instances of coastal flooding around the United Kingdom in the last 100 years have been due to moderate storm events combined with high spring tides, rather than extreme storms. Researchers have undertaken one of the most detailed assessments of extreme sea level and coastal flooding ever carried out ...

  • Potential use of ionic species for identifying source land-uses of stormwater runoff

    Identifying critical land-uses or source areas is important to prioritize resources for cost-effective stormwater management. This study investigated the use of information on ionic composition as a fingerprint to identify the source land-use of stormwater runoff. We used 12 ionic species in stormwater runoff monitored for a total of 20 storm events at five sites with different land-use ...


    By IWA Publishing

  • IECA Announces Canadian Chapter with a Nilex Twist

    In their November 3 edition, Geosynthetica.net announced the first Canadian chapter of the International Erosion Control Association Region One (IECA). Nilex is proud to have Tim ...


    By Nilex

  • Removal of Fallen Leaves Can Improve Urban Water Quality

    The timely removal of leaf litter can reduce harmful phosphorus concentrations in stormwater by over 80 percent in Madison, Wisconsin, according to a recent U.S. Geological Survey study. Autumn leaf litter contributes a significant amount of phosphorus to urban stormwater, which then runs off into waterways and lakes. Excessive amounts of ...

  • SURE HOUSE: Students Design Storm-Ready Shore Home

    Every other year, collegiate teams from across the country partake in the U.S. Department of Energy’s Solar Decathlon with the challenge of designing a fully solar-powered home that fuses style, efficiency and affordability. For more than 30 students at Stevens Institute of Technology in Hoboken, New Jersey, though, those requirements were just a starting point. Entering the national ...


    By Institut für Solartechnik

  • Do storm event samples bias the comparison between sewer deposits contribution?

    Previous researches demonstrated the occurrence of unique in-sewer sediment, the organic layer, on the Marais site in Paris, capable of explaining the entire wet weather sewer production of suspended particles. Other studies on sites having no similar organic sediment, Clichy in Paris and Ecully in Lyon, demonstrated a wet weather sewer deposits contribution (SDC) to effluent pollution ...


    By IWA Publishing

  • Beaver Dam Flats ArmorFlex Pathway Reconstruction - Case Study

    ArmorFlex provides a low-disturbance, efficient and flexible solution to a flood-damaged trail. A trail system path through the Bow River floodplain in Calgary was washed-out during the city’s 2013 flood. The City of Calgary needed to make quick and lasting repairs to maintain this section as part of its larger Regional Pathway Network, an important link for commuters and ...


    By Nilex

  • Erosion and Sediment Control: Navigating NPDES Regulations, the SWPPP, and Techniques for Compliance

    Erosion and Sedimentation: Why Are They a Problem? The US Environmental Protection Agency lists sediment as the single most common pollutant in rivers, streams, lakes, and reservoirs. With all the potentially harmful chemicals and substances in the world, it seems odd to many people that sediment—dirt, essentially—is singled out as the major culprit. Yet these particles of ...


    By FINN Corporation

  • Structural improvements on hydrodynamic separators: a computational fluid dynamics approach

    Hydrodynamic separators (HDSs) have been used extensively to reduce stormwater pollutants from urbanized areas before entering the receiving water bodies. They primarily remove particulates and associated pollutants using gravity settling. Two types of HDSs with different structural configurations of the inner vortex-inducing components were presented in this study. One configuration consisted ...


    By IWA Publishing

  • Georgia city uses geospatial technology to identify assets and improve safety

    One of Georgia’s newest cities decided to go digital with CH2M - digitizing assets to manage operations and improve public safety for the city. If you’re a brand new city, you’re probably thinking what can we do to quickly make our community a better place to live? Peachtree Corners, one of Georgia’s newest cities, decided to go digital with CH2M - digitizing ...


    By CH2M Hill Companies, Ltd.

  • Funding Time Is Running Out. We Can Help Make The Most Of Your Spending.

    The Clean Water and Wastewater Fund (CWWF) is a federal program designed to support the rehabilitation and modernization of drinking water, wastewater and stormwater infrastructure. Through the CWWF, $569.5 million is being provided through federal infrastructure funding. The Province of Ontario is cost-matching contributions up to a maximum of 25% of total eligible costs. ...


    By Pure Technologies

  • Experimental study of hydraulics and sediment capture efficiency in catchbasins

    Catchbasins (also known as gully pot in the UK and Australia) are used to receive surface runoff and drain the stormwater into storm sewers. The recent interest in catchbasins is to improve their effectiveness in removing sediments in stormwater. An experimental study was conducted to examine the hydraulic features and sediment capture efficiency in catchbasins, with and without a bottom sump. ...


    By IWA Publishing

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