Tag Archives: Spotlight
PWD has designed a monitoring program to collect many types of environmental data including precipitation, sewer flow, and data on GSI performance.

Data analyses confirm GSI value in overflow control

Designed to reduce combined sewer overflow, green infrastructure in the city of Philadelphia, Pa., in the U.S., has been proven effective based on monitoring data analyses, according to Dwayne Myers and Andrew Baldridge of CDM Smith and Chris Bergerson, Taylor Heffernan, Varsha Raj, Stephen White, and Elizabeth Mannarino of the Philadelphia Water Department. Many water […]

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Figure 1 from the 2018 publication (originally Figure 2.1 in the 2013 report) presents trends in different types of natural catastrophes worldwide from 1980 to 2016. The updated data shows a continuation of the trends previously observed whereby climate-related extreme events are rising, with a particularly sharp increase in hydrological events. (Data from MunichRE Natcatservice/EASAC)

New data updates earlier findings on extreme weather events

The European Academies’ Science Advisory Council (EASAC; Halle, Germany) recently released a publication that updates a previous 2013 EASAC report with new data showing that extreme weather events have become more frequent during the past 36 years. The new findings — which confirm the conclusions in the original report and extend the previous analysis — […]

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Porous pavement strengthened with waste carbon fiber composite material maintained infiltration rates above acceptable levels. (Photo courtesy of Washington State University)

Researchers use waste carbon fiber to strengthen permeable pavement

Researchers in the Department of Civil and Environmental Engineering at Washington State University have demonstrated that permeable pavement can be improved with the addition of recycled carbon fiber composite material. Associate research professor Karl Englund and Assistant professor Somayeh Nassiri supplemented permeable concrete mixes with composite scraps sourced from Boeing (Chicago) manufacturing facilities and found […]

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Roadway runoff causes long-term sensory damage in Pacific Northwest salmon

Toxic roadway pollutants captured and conveyed by stormwater pose a serious threat to coho salmon and other fish in the Pacific Northwest’s urban watersheds. New research from Washington State University (WSU; Vancouver) shows that green infrastructure can help reduce mortality rates, but that pollutants can still potentially make fish more susceptible to predators.   Salmon’s […]

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State-of-the-art Hong Kong flooding project recognized for innovation and creativity

Located between a busy highway and Hong Kong’s Victoria Harbour, Happy Valley Recreation Ground is a heavily frequented hotspot for locals and tourists alike. But during the rainy season, the appeal of the low-lying neighborhood’s museums, sports fields, and horse-racing track is compromised by its high susceptibility to stormwater flooding. In 2008, for example, the […]

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These three tanks are part of the 113,500-L (30,000-gal) capacity stormwater capture and reuse system at the Grand Hyatt Atlanta. In all, the system has eight tanks. Stormwater, air conditioner condensate, and ice machine meltwater are collected and reused in the hotel’s cooling towers.

Simple hotel stormwater capture and reuse system benefits local environment

While rainy days during a vacation or business trip aren’t ideal, the Grand Hyatt Atlanta hotel in the Buckhead area of Atlanta, uses a simple stormwater collection and reuse system to make the most of wet weather. The hotel captures rain water from flat portions of its roof and an outdoor zen garden. It also […]

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U.S. EPA and USGS collaborate on new surface-water modeling tool

The U.S. Geological Survey (USGS) is working with the U.S. Environmental Protection Agency (EPA) to combine two popular streamflow analysis tools into a single, integrated resource. The Surface Water Toolbox (SWToolbox), which has not yet been released to the public, will allow users to compute an extensive number of metrics associated with modeling how surface […]

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Study: To combat toxic algal blooms, focus on phosphorus

The results of an experiment spanning nearly a half-century at the International Institute for Sustainable Development (IISD; Winnipeg, Manitoba, Canada) claim that if water stewards want to stem the growth of harmful algal blooms, they should focus on phosphorus rather than nitrogen. The discovery, made by the same research organization credited with identifying phosphorus as […]

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Boston releases 50-year floodproofing plan to meet climate risks

Boston was built on climate resiliency planning. Early residents gradually filled in low-lying Atlantic Ocean tidelands as the city expanded. They turned small islands and peninsulas into neighborhoods high enough above sea level to prevent flooding from typical tides and storms. Today, some of these areas, such as East Boston and Charlestown, are among the […]

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Stormwater practices fail to remove road salt

Road salts commonly used in the winter to melt ice and keep roads clear are not being effectively absorbed by mitigation measures, allowing the salt to reach groundwater and wells, according to Joel Snodgrass, professor and head of the Department of Fish and Wildlife Conservation at Virginia Tech (Blacksburg, Va.). “Current stormwater management practices don’t […]

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