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By Don Talend Persistent localized flooding problems in parts of Victoria, TX—located near the Gulf Coast—have prompted the city to use documented residential flooding complaints to identify and prioritize areas in need of in-depth evaluation. To optimize capital spending, the city is not merely using anecdotal flooding evidence to guess at how to possibly resize parts of its drainage infrastructure. Rather, sophisticated modeling efforts were undertaken to assist in identifying causes of the localized ...... continue reading
From: Stormwater Topics: Flood Control, Software, Water-quality Monitoring
By Don Talend Handling Wet, Emergency Conditions The intersection of Routes 9 and 440 with the Garden State Parkway is one of New Jersey’s busiest and most vital cloverleaf complexes. Sinkholes began to appear there after Hurricane Irene in 2011. “Soil was collapsing into large-diameter corrugated metal pipe [CMP] storm sewers and creating big sinkholes,” notes Alkesh Desai, stormwater emergency manager for the New Jersey Department of Transportation (NJDOT). “When we inspected, we found that mor...... continue reading
From: Stormwater Topics: BMP Manufactured, Drainage Systems, Flood Control
Lynden Pindling International Airport (LPIA), formerly known as Nassau International Airport, is the largest airport in the Bahamas and the largest international gateway into the country. With two runways, more than 30 gates, and 482,000 square feet of terminal space, the airport sees more than three million passengers per year. Named after Sir Lynden Pindling, the first Prime Minister of the Commonwealth of the Bahamas, the airport sits just west of Nassau and a short drive from some of the best resort...... continue reading
From: Stormwater Topics: BMP Manufactured, Flood Control, Project Design
By David Engle Urban stormwater ruins picnics and ballgames, raises floods, snarls traffic, threatens safety, wreaks destruction, costs cities millions in damage and disruption—and those are among the relatively short-lived effects. Stormwater runoff is also the leading source of water-quality problems nationwide, carrying sediment and other pollutants to lakes, streams, coastal estuaries, and even drinking supplies; one fairly recent persuasive report on this came from the United States National Resear...... continue reading
From: Stormwater Topics: Flood Control, Program Management, Software
By Janet Aird
Flooding can be caused by heavy rain falling for an unusually long time. It can be caused by an unusually large snowpack followed by a sudden thaw. It can be caused by unusually high tides, tsunamis, dam failures, deforestation, poor drainage, or a high proportion of impervious land, or by a combination of any of these factors. Because the most vulnerable areas are low-lying, the first method of flood control is often to build berms, levees, and floodwalls. Another is to dig down and construct ponds and...... continue reading
From: Stormwater Topics: BMP Manufactured, Drainage Systems, Flood Control
By JoAnne Castagna
We've all seen the images of Hurricane Katrina's destruction: flooded streets, destroyed homes, shattered families. It's these same images that will help rebuild the lives of our fellow Americans in the Gulf Coast. Photo: USACE GIS map of New Orleans vulnerabilities The US Army Corps of Engineers (USACE) is using a geographic information system (GIS) to create maps that are needed before the corps can perform recovery efforts in support of the Federal Emergency Management Agency (FEMA) and other state, ...... continue reading
From: Stormwater Topics: Flood Control
By Janice Kaspersen
Every so often, an event occurs that focuses national attention on people who are usually not in the public eye; something extraordinary compels us to recognize them and appreciate the job they’ve been doing all along. We always knew someone must be performing that function, but very likely many of us never gave it a second thought. The New York City firefighters on 9/11 were one such group, as are the first-responders in almost any emergency situation. Stormwater management, too, has its dramatic momen...... continue reading
From: Stormwater Topics: Flood Control, Maintenance
By Carol Brzozowski
With the 2006 hurricane season just a few months away, the raw memories of Hurricane Katrina and other history-making hurricanes of the past few years surely have those living in states bordering the Gulf of Mexico and the Atlantic Ocean biting their nails.Hurricane Katrina—one of the worst natural disasters in the history of the United States—was the mother of all stormwater events, putting most areas of New Orleans under a significant amount of water as levees meant to hold back the water broke, allow...... continue reading
From: Stormwater Topics: Flood Control, Pollutants, Water Quality Monitoring
By Lalit Jha, Devin Biesecker, Jonathan E. Jones, J. D. Johnson, and Sally Kribs Virtually every municipal public works staff person has had the experience: Heavy rains are followed by calls from certain residents on particular streets complaining about drainage issues. Oftentimes these “squeaky wheels” have their concerns addressed far sooner than other potentially more serious municipal drainage problems that are not the subject of complaints. In fact, frequency of resident complaints is commonly...... continue reading
From: Stormwater Topics: Drainage Systems, Flood Control, Program Management
By Daniel E Medina, Jacquelyn Monfils, Zachary Baccala
Green infrastructure (GI), also known as low-impact development (LID), is a stormwater management approach that emphasizes minimization of runoff through a combination of sound site planning principles and concepts that encourage disconnection of impervious areas from waterways, infiltration, and evapotranspiration. A basic tenet of GI is to control small storms, which typically comprise upward of 80% of the average annual rainfall. Runoff from these storms is diverted to pervious areas or collected in ...... continue reading
From: Stormwater Topics: Flood Control, Low-impact Development, Watershed Projects
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